cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Towards a consistent model of the hot quadruple system HD 93206 = QZ Carinae - I. Observations and their initial analyses
Creators: name: Harmanec, P.
name: Zasche, P.
name: Brož, M.
name: Catalan-Hurtado, R.
name: Barlow, B. N.
name: Frondorf, W.
name: Wolf, M.
name: Drechsel, H.
name: Chini, R.
name: Nasseri, A.
name: Pigulski, A.
name: Labadie-Bartz, J.
name: Christie, G. W.
name: Walker, W. S. G.
name: Blackford, M.
name: Blane, D.
name: Henden, A. A.
name: Bohlsen, T.
name: Božić, H.
name: Jonák, J.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The hot nine-component system HD 93206, which contains a gravitationally bounded eclipsing Ac1+Ac2 binary ($P=5.9987$~d) and a spectroscopic Aa1+Aa2 ($P=20.734$~d) binary can provide~important insights into the origin and evolution of massive stars. Using archival and new spectra, and a~rich collection of ground-based and space photometric observations, we carried out a detailed study of this object. We provide a much improved description of both short orbits and a good estimate of the mutual period of both binaries of about 14500~d (i.e. 40 years). For the first time, we detected weak lines of the fainter component of the 6.0~d eclipsing binary in the optical region of the spectrum, measured their radial velocities, and derived a mass ratio of $M_{\rm Ac2}/M_{\rm Ac1}=1.29$, which is the opposite of what was estimated from the International Ultraviolet explorer (IUE) spectra. We confirm that the eclipsing subsystem Ac is semi-detached and is therefore in a phase of large-scale mass transfer between its components. The Roche-lobe filling and spectroscopically brighter component Ac1 is the less massive of the two and is eclipsed in the secondary minimum. We show that the bulk of the \ha emission, so far believed to be associated with the eclipsing system, moves with the primary O9.7I component Aa1 of the 20.73~d spectroscopic binary. However, the weak emission in the higher Balmer lines seems to be associated with the accretion disc around component Ac2. We demonstrate that accurate masses and other basic physical properties including the distance of this unique system can be obtained but require a more sophisticated modelling. A~first step in this direction is presented in the accompanying Paper~II (Brož et al.).
description: 20 pages, 12 Figures
Speed limit for a highly irreversible process and tight finite-time Landauer's bound
Creators: name: Lee, Jae Sung
name: Lee, Sangyun
name: Kwon, Hyukjoon
name: Park, Hyunggyu
Publisher: name: arXiv
Year: 2022
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Landauer's bound is the minimum thermodynamic cost for erasing one bit of information. As this bound is achievable only for quasistatic processes, finite-time operation incurs additional energetic costs. We find a tight finite-time Landauer's bound by establishing a general form of the classical speed limit. This tight bound well captures the divergent behavior associated with the additional cost of a highly irreversible process, which scales differently from a nearly irreversible process. We also find an optimal dynamics which saturates the equality of the bound. We demonstrate the validity of this bound via discrete one-bit and coarse-grained bit systems. Our work implies that more heat dissipation than expected occurs during high-speed irreversible computation.
Exploring the potential of neural networks to predict statistics of solar wind turbulence
Creators: name: Wrench, Daniel
name: Parashar, Tulasi N.
name: Singh, Ritesh K.
name: Frean, Marcus
name: Rayudu, Ramesh
Publisher: name: arXiv
Year: 2022
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: Time series datasets often have missing or corrupted entries, which need to be ignored in subsequent data analysis. For example, in the context of space physics, calibration issues, satellite telemetry issues, and unexpected events can make parts of a time series unusable. Various approaches exist to tackle this problem, including mean/median imputation, linear interpolation, and autoregressive modeling. Here we study the utility of artificial neural networks (ANNs) to predict statistics, particularly second-order structure functions, of turbulent time series concerning the solar wind. Using a dataset with artificial gaps, a neural network is trained to predict second-order structure functions and then tested on an unseen dataset to quantify its performance. A small feedforward ANN, with only 20 hidden neurons, can predict the large-scale fluctuation amplitudes better than mean imputation or linear interpolation when the percentage of missing data is high. Although, they perform worse than the other methods when it comes to capturing both the shape and fluctuation amplitude together, their performance is better in a statistical sense for large fractions of missing data. Caveats regarding their utility, the optimisation procedure, and potential future improvements are discussed.
description: 17 pages, 5 figures, 2 tables
Metastable and spin-polarized states in electron systems with localized electron-electron interaction
Creators: name: Sablikov, Vladimir A.
name: Shchamkhalova, Bagun S.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We study the formation of spontaneous spin polarization in inhomogeneous electron systems with pair interaction localized in a small region that is not separated by a barrier from surrounding gas of non-interacting electrons. Such a system is interesting as a minimal model of a quantum point contact, in which the electron-electron interaction is strong in a small constriction coupled to electron reservoirs without barriers. Based on the analysis of the grand potential within the self-consistent field approximation, we find that the formation of the polarized state strongly differs from the Bloch or Stoner transition in homogeneous interacting systems. The main difference is that a metastable state appears in the critical point in addition to the globally stable state, so that when the interaction parameter exceeds a critical value, two states coexist. One state has spin polarization and the other is unpolarized. Another feature is that the spin polarization increases continuously with the interaction parameter and has a square-root singularity in the critical point. We study the critical conditions and the grand potentials of the polarized and unpolarized states for one-dimensional and two-dimensional models in the case of extremely small size of the interaction region.
description: 10 pages, 7 figures, typos corrected. Published version
Dynamical systems defined on simplicial complexes: symmetries, conjugacies, and invariant subspaces
Creators: name: Nijholt, Eddie
name: DeVille, Lee
Publisher: name: arXiv
Year: 2022
Subjects: subject: Dynamical Systems (math.DS)
subject: Algebraic Topology (math.AT)
subject: Classical Analysis and ODEs (math.CA)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 34D06, 55U10, 15A18, 05C65, 91D31

description: We consider the general model for dynamical systems defined on a simplicial complex. We describe the conjugacy classes of these systems and show how symmetries in a given simplicial complex manifest in the dynamics defined thereon, especially with regard to invariant subspaces in the dynamics.
First-order formalism for twinlike models with several real scalar fields
Creators: name: Bazeia, D.
name: Lobão, A. S.
name: Losano, L.
name: Menezes, R.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We investigate the presence of twinlike models in theories described by several real scalar fields. We focus on the first-order formalism, and we show how to build distinct scalar field theories that support the same extended solution, with the same energy density and the very same linear stability. The results are valid for two distinct classes of generalized models, that include the standard model and cover a diversity of generalized models of current interest in high energy physics.
description: 9 pages; Version to appear in EPJC
Covered in ads : the equity implications of advertisement-funded transit infrastructure
Creators: name: Butcher, Victor Allan
Publisher: name: The University of Texas at Austin
Year: 2023
Subjects: Transit
Equity
Shelters
Bus
Stop
Denver
Los Angeles
Shelter
Public transportation
Transportation

description: This report explores a ubiquitous yet underexplored way of funding, installing, and maintaining public transportation infrastructure: public-private-partnerships between municipalities and private advertising firms, focusing on the equity implications of such partnerships for existing transit riders and historically disadvantaged groups. Such partnerships, such as Los Angeles, California’s first advertisement-based bus stop shelter program, have resulted in negative equity outcomes. In Los Angeles, researchers found that the advertising partner had placed the majority of shelters in wealthier, whiter areas of the city, rather than areas of high transit ridership. This report then applies and expands upon the methods used by researchers in the Los Angeles context to the two bus stop improvement programs in Denver, Colorado. The analysis compares the differences in equity outcomes between the city/county’s advertisement-based program and the transit operator’s ridership-focused program. I find that Denver’s advertisement-based bus stop improvement program has allowed advertisers to place shelters in wealthier, whiter areas of Denver and that the shelters placed by the local transit operator serve far more transit riders than the advertisement-based program. Municipalities should define their equity goals when crafting partnerships with advertising firms and should develop strong mitigation measures against the principal-agent problem that arises with such partnerships.
Geomechanical Modeling of Salt Cavern Stability for Carbon Dioxide Storage in Northeast Thailand
Creators: name: Narumas Pajonpai
Publisher: name: Department of Geology, Chulalongkorn University
Year: 2019
Subjects: CO2 storage, salt cavern, cavern stability, safety, northeast Thailand

description: Bulletin of Earth Sciences of Thailand (BEST), 11, 1, 12-Jan
Authenticated Multiparty Quantum Key Agreement for Optical-Ring Quantum Communication Networks
Creators: name: Gao, Li-Zhen
name: Zhang, Xin
name: Lin, Song
name: Wang, Ning
name: Guo, Gong-De
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum communication networks are connected by various devices to achieve communication or distributed computing for users in remote locations. In order to solve the problem of generating temporary session key for secure communication in optical-ring quantum networks, a quantum key agreement protocol is proposed. In the key agreement protocols, an attacker can impersonate a legal user to participate in the negotiation process and eavesdrop the agreement key easily. This is often overlooked in most quantum key agreement protocols, which makes them insecure in practical implementation. Considering this problem, the function of authenticating the user's identity is added in the proposed protocol. Combining classical hash function with identity information, we design the authentication operation conforming to the characteristics of quantum search algorithm. In the security analysis of the proposed protocol, quantum state discrimination is utilized to show that the protocol is secure against common attacks and impersonation attack. In addition, only single photons need to be prepared and measured, which makes our protocol feasible with existing technology.
Data and code corresponding to lipidomics dataset 3 (Phadnis et al., 2023)
Creators: name: Phadnis, Vaishnavi
Publisher: name: Zenodo
Year: 2023

description: Lipidomics dataset 3: NT sg, MMD KO, EV + NT sg, EV + MBOAT7 sg source data: merged_filtered_fromweng.txt code: lipidomics_mboat7_wibrdata_strategic analysis_FORPUBLICATION.R
Überzeugungen zum Einsatz von Anschauungsmitteln – Ergebnisse einer Pilotstudie
Creators: name: Ries, Clara
name: Schuler, Stephanie
name: Wittmann, Gerald
Publisher: name: Gesellschaft für Didaktik der Mathematik
Year: 2023
Subjects: subject: Anschauungsmittel
subject: Überzeugungen
subject: Lehrkräfte
subject: Anfangsunterricht
subject: Grundschule
subject: Arithmetik
subject: Sonstiges
subject: 510

description: Anschauungsmittel und Handlungen an diesen sind im Mathematikunterricht ein gängiges Mittel zur Repräsentation mathematischer Inhalte und Beziehungen. Die Bedeutung, die Lehrkräfte Anschauungsmitteln für das Mathematiklernen beimessen, ist entscheidend für Häufigkeit, Dauer und Art und Weise des Einsatzes in ihrem Unterricht und damit bedeutsam für den Lernerfolg der Kinder. Die im Folgenden vorgestellte Studie lenkt den Blick auf die Überzeugungen von Lehrkräften zum Einsatz von Anschauungsmitteln mit dem Ziel, diese Überzeugungen anhand von Leitfadeninterviews zu rekonstruieren und zu typisieren.
Dissipation and geometry in nonlinear quantum transports of multiband electronic systems
Creators: name: Michishita, Yoshihiro
name: Nagaosa, Naoto
Publisher: name: arXiv
Year: 2022
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Nonlinear responses in condensed matters attract recent intensive interest because they provide rich information about the materials and hold the possibility of being applied in diodes or high-frequency optical devices. Nonlinear responses are often closely related to the multiband nature of the system which can be taken into account by the geometric quantities such as the Berry curvature as shown in the nonlinear Hall effect. Theoretically, the semi-classical Boltzmann treatment or the reduced density matrix method have been often employed, in which the effect of dissipation is included through the relaxation time approximation. In the diagrammatic method, the relaxation is treated through the imaginary part of the self-energy of the Green function and the consequent broadening of the spectral function for the integration over the real frequency. Therefore, the poles of the Green function do not play explicit pole when there is finite dissipation. In this paper, in stark contrast to this conventional picture, we show that the poles of the Green function determine mostly the nonlinear response functions with dissipation, which leads to the terms with the Fermi distribution function of complex argument and results in the dissipation-induced geometric term. We elucidate the geometric origin of the nonreciprocal conductivity, which is related to the Berry curvature generalized to the higher derivative. Finally, we derive the analytical results on the geometric terms of the nonlinear conductivities in the type-I and type-II Weyl Hamiltonian to demonstrate their crucial roles.
description: 10 pages, 6 figures in the main text
Spectroscopic redshifts of galaxies within the Frontier Fields
Creators: name: Ebeling, H.
name: Ma, C. -J.
name: Barrett, E.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present a catalog of 1921 spectroscopic redshifts measured in the fields of the massive galaxy clusters MACSJ0416.1--2403 ($z=0.397$), MACSJ0717.5+3745 ($z=0.546$), and MACSJ1149.5+2223 ($z=0.544$), i.e., three of the four clusters selected by STScI as the targets of the Frontier Fields (FF) initiative for studies of the distant Universe via gravitational lensing. Compiled in the course of the MACS project (Massive Cluster Survey) that detected the FF clusters, this catalog is provided to the community for three purposes: (1) to allow the identification of cluster members for studies of the galaxy population of these extreme systems, (2) to facilitate the removal of unlensed galaxies and thus reduce shear dilution in weak-lensing analyses, and (3) to improve the calibration of photometric redshifts based on both ground- and spacebased observations of the FF clusters.
description: Updated to match the published version. All data available electronically from the online ApJS article, as well as via the Frontier Fields MAST website at http://www.stsci.edu/hst/campaigns/frontier-fields/FF-Data
Shannon theory beyond quantum: information content of a source
Creators: name: Perinotti, Paolo
name: Tosini, Alessandro
name: Vaglini, Leonardo
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The information content of a source is defined in terms of the minimum number of bits needed to store the output of the source in a perfectly recoverable way. A similar definition can be given in the case of quantum sources, with qubits replacing bits. In the mentioned cases the information content can be quantified through Shannon's and von Neumann's entropy, respectively. Here we extend the definition of information content to operational probabilistic theories, and prove relevant properties as the subadditivity, and the relation between purity and information content of a state. We prove the consistency of the present notion of information content when applied to the classical and the quantum case. Finally, the relation with one of the notions of entropy that can be introduced in general probabilistic theories, the maximum accessible information, is given in terms of a lower bound.
description: 14 pages
Workshop Synthesis: Behavioral changes in travel - Challenges and implications for their identification and measurement
Creators: name: Chlond, B.
name: Eisenmann, C.
Publisher: name: Karlsruhe
Year: 2018
Subjects: behavioral change
survey
travel
passive data

description: Transportation policy measures aim to motivate people to change their travel behavior (e.g. to use sustainable modes of transportation instead of a car). Furthermore, life events (e.g. birth of a child, retirement) often result in changes in travel behavior. On the other hand, structural processes (e.g. the exchange of differently car-socialized cohorts) might result in changes in travel volumes as well, but the underlying reasons for this cannot be regarded as behavioral changes. A major goal in the workshop was to find a comprehensive definition of behavioral change. Based on this definition, methodological approaches have been discussed and distinguished from each other and methods for the identification and measurement of behavioral changes by use of different methodical approaches have been revealed.
Performance evaluation of a new prognostic‐efficacy‐combination design in the context of telemedical interventions
Creators: name: Pigorsch, Mareen
name: Möckel, Martin
name: Gehrig, Stefan
name: Wiemer, Jan C.
name: Koehler, Friedrich
name: Rauch, Geraldine
Publisher: name: Technische Universität Berlin
Year: 2022
Subjects: subject: 600 Technik, Medizin, angewandte Wissenschaften::610 Medizin und Gesundheit::610 Medizin und Gesundheit
subject: telemedicine
subject: biomarker‐selected population
subject: simulation study
subject: innovative study design
subject: bias estimation

description: Aims: Telemedical interventions in heart failure patients intend to avoid unfavourable, indication‐related events by an early, individualized care, which reacts to the current patients need. However, telemedical support is an expensive intervention, and usually only patients with high risk for unfavourable follow‐up events will be able to profit from it. Möckel et al. therefore adapted a new design which we call ‘prognostic‐efficacy‐combination design’. This design allows to define a biomarker cut‐off and to perform a randomized controlled trial (RCT) in a biomarker‐selected population within a single study. However, so far, it has not been evaluated if this double use of the control group for biomarker cut‐off definition and efficacy assessment within the RCT leads to a bias in treatment effect estimation. In this methodological research work, we therefore want to evaluate whether the ‘prognostic‐efficacy‐combination design’ leads to biased treatment effect estimates and also compare it to alternative designs. If there is a bias, we further want to analyse its magnitude under different parameter settings. Methods: We perform a systematic Monte Carlo simulation study to investigate among others potential bias, root mean square error and sensitivity, and specificity as well as the total treatment effect estimate in various realistic trial scenarios that mimic and vary the true data characteristics of the published TIM‐HF2 Trial. In particular, we vary the event proportion, the sample size, the biomarker distribution, and the lower bound for the sensitivity. Results: The results show that indeed the proposed design leads to some bias in the effect estimators, indicating an overestimation of the effect. However, this bias is relatively small in most scenarios. Conclusions: The ‘prognostic‐efficacy‐combination design’ can generally be recommended for clinical applications due to its efficiency compared to two separate trials. We recommend a sufficiently large sample size depending on the trial scenario. Our simulation code can be adapted to explore suitable sample sizes for other settings.
Suppression of Nonlinear Optical Rogue Wave Formation Using Polarization-Structured Beams
Creators: name: Black, A. Nicholas
name: Choudhary, Saumya
name: Arroyo-Rivera, E. Samuel
name: Woodworth, Hayden
name: Boyd, Robert W.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: A nonlinear self-focusing material can amplify random small-amplitude phase modulations present in an optical beam, leading to the formation of amplitude singularities commonly referred to as optical caustics. By imposing polarization structuring on the beam, we demonstrate the suppression of amplitude singularities caused by nonlinear self-phase modulation. Our results are the first to indicate that polarization-structured beams can suppress nonlinear caustic formation in a saturable self-focusing medium and add to the growing understanding of catastrophic self-focusing effects in beams containing polarization structure.
description: 6 pages, 3 figures
Improvement of teaching methods and student learning status in teacher training course II – Topics in teaching Relative Value
Creators: name: Moriya, Seiji
name: Tan, Youichi
name: Kato, Takashi
Publisher: name: Gesellschaft für Didaktik der Mathematik
Year: 2023
Subjects: subject: Pre-service
subject: Relative Value
subject: Elementary teacher training course of university
subject: Grundschule
subject: Lehrerbildung (1., 2. und 3. Phase)
subject: Argumentieren & Beweisen
subject: Arithmetik
subject: 510

description: We would like to explain our concrete plans on the pre-service of mathematics education methodology in teacher training course of university. It is difficult for many pupils at elementary school to understand on Relative Value in Japan. Students at university, who want to be teachers, don’t understand Relative Value, sufficiently, too. We have taught the new teaching methods to students. They understood the meaning of Relative Value and learned how to teach it to pupils.
Accretion disk radiation dynamics and the cosmic battery
Creators: name: Koutsantoniou, Leela E.
name: Contopoulos, Ioannis
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We investigate the dynamics of radiation in an astrophysical accretion disk around a Kerr black hole. The source of the radiation is the accretion disk itself, and not a central object as in previous studies of the Poynting-Robertson effect. We generate numerical sky maps from photon trajectories that originate on the surface of the disk as seen from the inner edge of the disk at the position of the innermost stable circular orbit (ISCO). We investigate several accretion disk morphologies with a Shakura-Sunyaev surface temperature distribution. Finally, we calculate the electromotive source of the Cosmic Battery mechanism around the inner edge of the accretion disk and obtain characteristic timescales for the generation of astrophysical magnetic fields.
description: 14 pages, 5 figures, accepted for publication in the Astrophysical Journal
Constraining runaway dilaton models using joint gravitational-wave and electromagnetic observations
Creators: name: Dhani, Arnab
name: Gupta, Anuradha
name: Sathyaprakash, B. S.
Publisher: name: arXiv
Year: 2022
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: With the advent of gravitational-wave astronomy it has now been possible to constrain modified theories of gravity that were invoked to explain the dark energy. In a class of dilaton models, distances to cosmic sources inferred from electromagnetic and gravitational wave observations would differ due to the presence of a friction term. In such theories, the ratio of the Newton's constant to the fine structure constant varies with time. In this paper we explore the degree to which it will be possible to test such models. If collocated sources (e.g. supernovae and binary neutron star mergers), but not necessarily multimessengers, can be identified by electromagnetic telescopes and gravitational-wave detectors one can probe if light and gravitational radiation are subject to the same laws of propagation over cosmological distances. This helps in constraining the variation of Newton's constant relative to fine-structure constant. The next generation of gravitational wave detectors, such as the Cosmic Explorer and Einstein Telescope, in tandem with the Vera Rubin Observatory and gamma ray observatories such as the Fermi Space Observatory will be able to detect or constrain such variations at the level of a few parts in 100. We apply this method to GW170817 with distances inferred by the LIGO and Virgo detectors and the observed Kilonova.
Two dimensional LiMgAs; a novel Topological Quantum Catalyst for Hydrogen Evolution Reaction
Creators: name: Sattigeri, Raghottam M.
name: Jha, Prafulla K.
name: and, Piotr Śpiewak
name: Kurzydłowski, Krzysztof J.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: Quantum materials such as Topological Insulators (TI) have been promising due to diverse applications of their robust surface/edge states in the bulk (3D) and two-dimensional (2D) regime. Such conducting surface states in 3D systems, host "\textit{electron bath}" which are known to facilitate catalysis. However, the analogous effects in 2D scenarios wherein, conducting helical edge states giving rise to Fermionic accumulation has been scarcely addressed. Using density functional theory based \textit{first-principles} calculations, we demonstrate that, the conducting edge states in 2D TI such as LiMgAs can be exploited to facilitate excellent catalytic response towards Hydrogen evolution reactions. The Gibbs free energy in such cases was found to be as low as $-$0.02 eV which is quite superior as compared to other materials reported in literature. The concept presented herein can be extended to other well known 2D TI and used to realise novel topological quantum catalysts for ultra-high performance and efficient catalytic applications.
description: 5 pages, 4 figures
Non-Markovian Quantum Dynamics in Strongly Coupled Multimode Cavities Conditioned on Continuous Measurement
Creators: name: Link, Valentin
name: Müller, Kai
name: Lena, Rosaria G.
name: Luoma, Kimmo
name: Damanet, François
name: Strunz, Walter T.
name: Daley, Andrew J.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: An important challenge in non-Markovian open quantum systems is to understand what information we gain from continuous measurement of an output field. For example, atoms in multimode cavity QED systems provide an exciting platform to study many-body phenomena in regimes where the atoms are strongly coupled amongst themselves and with the cavity, but the strong coupling makes it complicated to infer the conditioned state of the atoms from the output light. In this work we address this problem, describing the reduced atomic state via a conditioned hierarchy of equations of motion, which provides an exact conditioned reduced description under monitoring (and continuous feedback). We utilise this formalism to study how different monitoring for modes of a multimode cavity affects our information gain for an atomic state, and to improve spin squeezing via measurement and feedback in a strong coupling regime. This work opens opportunities to understand continuous monitoring of non-Markovian open quantum systems, both on a practical and fundamental level.
Fibers of monotone maps of finite distortion
Creators: name: Kangasniemi, Ilmari
name: Onninen, Jani
Publisher: name: arXiv
Year: 2022
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 30C65 (Primary) 35J70 (Secondary)

description: We study topologically monotone surjective $W^{1,n}$-maps of finite distortion $f \colon Ω\to Ω'$, where $Ω, Ω' $ are domains in $\mathbb{R}^n$, $n \geq 2$. If the outer distortion function $K_f \in L_{\mathrm{loc}}^{p}(Ω)$ with $p \geq n-1$, then any such map $f$ is known to be homeomorphic, and hence the fibers $f^{-1}\{y\}$ are singletons. We show that as the exponent of integrability $p$ of the distortion function $K_f$ increases in the range $1/(n-1) \leq p < n-1$, then the fibers $f^{-1}\{y\}$ of $f$ start satisfying increasingly strong homological limitations. We also give a Sobolev realization of a topological example by Bing of a monotone $f \colon \mathbb{R}^3 \to \mathbb{R}^3$ with homologically nontrivial fibers, and show that this example has $K_f \in L^{1/2 - \varepsilon}_{\mathrm{loc}}(\mathbb{R}^3)$ for all $\varepsilon > 0$.
description: 25 pages, 7 figures
Very Light Sterile Neutrinos at NOvA and T2K
Creators: name: de Gouvêa, André
name: Sánchez, Giancarlo Jusino
name: Kelly, Kevin J.
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Over the last several years, our understanding of neutrino oscillations has developed significantly due to the long-baseline measurements of muon-neutrino disappearance and muon-to-electron-neutrino appearance at the T2K and NOvA experiments. However, when interpreted under the standard-three-massive-neutrinos paradigm, a tension has emerged between the two experiments' data. Here, we examine whether this tension can be alleviated when a fourth, very light neutrino is added to the picture. Specifically, we focus on the scenario in which this new neutrino has a mass similar to, or even lighter than, the three mostly-active neutrinos that have been identified to date. We find that, for some regions of parameter space, the four-neutrino framework is favored over the three-neutrino one with moderate (a little under two sigma) significance. Interpreting these results, we provide future outlook for near-term and long-term experiments if this four-neutrino framework is indeed true.
description: 18 pages, 13 figures, 6 tables
Learning from example: motivating the government to reinforce regulation of private health sector in resource-constrained Bihar province of India
Creators: name: Vikash R. Keshri
Publisher: name: Gates Open Research
Year: 2019

description: Purpose:
Bihar is one of the resource-constrained state in India. Health systems in Bihar is mixed and complex. Majority of people access health care from the private sector, although the cost is much higher. State government is trying to regulate the private sector by bringing policies aimed mainly at administrative control and barely at market harnessing methods. First regulatory policy was enacted in the year 2010 but couldn’t be implemented. Later, state government adopted the central act “The Clinical Establishment Act (CEA) in the year 2013. But, no private health facility could be registered, hence they continue to be unregulated. We adopted case study approach to understand successful regulatory framework and make recommendations for the Government of Bihar.

Focus/Contents:
Constitutional provisions in India mandates improvement in public health, nutritional status and right to life for all citizen as a responsibility of government. The health issue is under the jurisdiction of state government. Due to unregulated proliferation of mixed health systems, high inequity in access and low quality of care is most important challenge. Many factors contribute to this challenge, these are; limited role of government as steward, insufficient institutional arrangements, lack of motivation, the dominant role of doctors and professional associations in the overall political economy. All other countries, where regulation is successful have robust institutions, which is decentralized. All other states of India, where regulation is successfully used innovative approaches and harnessed technology to advance the implementation of legislation.

Based on this review, we recommended the possible approach towards larger stewardship role of government in Bihar. The approach can be: a). The government must continue to focus on strengthening public health systems and b). Government must start regulating the private sector. Identified next steps were: Policy analysis of CEA, mapping of the private sector in health care, engaging the stakeholders, and policy mapping to explore options to constructively engage the private sector.

Significance for sub-theme area /field building dimensions:
We adopted this unique strategy for motivating and developing the capacity of local government for ensuring effective regulation. Co-planning with state-level policymakers was done by rounds of meeting to identify steps for future research and policy action. Co-designing of research focus with policymakers turned out to be suitable health policy and systems research approach for complex issues.

Target audience:
The target audience for this study was the department of health in the state of Bihar. Approach to build stewardship capacity can be replicated in other similar settings.
Lernen mit homogenen externalen Repräsentationen im Bereich der Aussagenlogik bei Kindern der Klassenstufen 4 bis 6
Creators: name: Harenz, Julia
name: Altmeyer, Kristin
name: Vogel, Markus
name: Brünken, Roland
name: Malone, Sarah
Publisher: name: Gesellschaft für Didaktik der Mathematik
Year: 2023
Subjects: subject: Logik
subject: multiple externale Repräsentationen
subject: Aussagenlogik
subject: Formeln
subject: Multimedia-Effekt
subject: 510

description: Die Überlegenheit von multiplen externalen Repräsentationen (MER) im Vergleich zu Einzelrepräsentationen ist vielfach nachgewiesen (z.B. Lindner et al., 2017). Ott et al. (2018) und Malone et al. (2020) zeigten, dass sowohl homogene MER (Text/Formel) als auch heterogene MER (Text/Grafik) das Lösen von Mathematikaufgaben bei Erwachsenen positiv beeinflussten.
Data and code corresponding to lipidomics dataset 2 (Phadnis et al., 2023)
Creators: name: Phadnis, Vaishnavi
Publisher: name: Zenodo
Year: 2023

description: Lipidomics dataset 2: NT sg, MMD KO + EV, MMD KO + MMD, EV + NT sg, MMD + NT sg, EV + MBOAT7 sg, MMD + MBOAT7 sg. Original file with metadata rows: 23_0323_HEN_OVCAR_C8-pos.xlsx Source file for code (no metadata): lipidomics_all_noMetadataRows.txt Code: lipidomics_april2023_strategic analysis_FORPUBLICATION.R
S-dual Inflation: BICEP2 data without unlikeliness
Creators: name: Anchordoqui, Luis A.
name: Barger, Vernon
name: Goldberg, Haim
name: Huang, Xing
name: Marfatia, Danny
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We show that S-dual inflationary potentials solve the unlikeliness problem manifested in Planck data and explain the excess B-mode power observed by the BICEP2 experiment as arising from primordial tensor fluctuations.
description: Matching version to be published in PLB
FINANCIAL SUPPORT FOR THE IMPLEMENTATION OF OPERATIONAL PROGRAMS OF FRUIT AND VEGETABLE PRODUCERS ORGANIZATIONS IN POLAND
Creators: name: MARYLA, BIENIEK-MAJKA
name: MARYLA, BIENIEK-MAJKA
Publisher: name: Unknown
Year: 2022
Subjects: subject: Agribusiness
subject: Agricultural and Food Policy
subject: fruit and vegetable market
subject: market organization
subject: producers’ organizations
subject: financial support
subject: operational programs

description: The aim of this study is to indicate the tasks carried out by Polish organizations of fruit and vegetables producers as part of the operational programs and the amount of financial support resulting from the European Union (EU) agricultural policy. The goal was achieved based on a library query and data from the European Commission, Eurostat, the Ministry of Agriculture and Rural Development and data obtained from the Agency for Restructuring and Modernization of Agriculture. As a result of the research, it was observed that in the EU countries the level of integration of fruit and vegetable producers is diversified (in Poland the degree of market organization is decreasing). There was a disproportionate absorption of funds (relatively very low in Poland), which constitute co-financing of operational programs of fruit and vegetable producers’ organizations in individual countries. It was emphasized that activities most often carried out as part of operational programs, were the ones related to production volume planning and product quality improvement. The level of support for withdrawing products from the market is worrying, as it may indicate an overproduction of fruit and vegetables.
Inflation in f(R,T) gravity with Double-Well potential
Creators: name: Deb, Biswajit
name: Deshamukhya, Atri
Publisher: name: arXiv
Year: 2022
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this piece of work, we studied the inflation in the context of f(R,T) theory of gravity. We assumed the functional form of f(R,T) to be $R+ λT$, where R is the Ricci scalar, T is the trace of the Energy-Momentum tensor and $λ$ is the model parameter. The cosmological observable parameters like scalar spectral index $n_s$ and tensor-to-scalar ratio $r$ are estimated for Double-Well potential. We found that for $λ= 115$, $n_s$ and $r$ are in good agreement with PLANCK 2018 data. Further, considering the vacuum expectation value in Double-Well potential to be Planckian, we observed the admissible range of model parameter to be $101 < λ< 130$ for which this model remains consistent with PLANCK 2018 data.
description: 11 pages, 2 figures
A Maxwell demon that can work at macroscopic scales
Creators: name: Freitas, Nahuel
name: Esposito, Massimiliano
Publisher: name: arXiv
Year: 2022
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Maxwell's demons work by rectifying thermal fluctuations. They are not expected to function at macroscopic scales where fluctuations become negligible and dynamics become deterministic. We propose an electronic implementation of an autonomous Maxwell's demon that indeed stops working in the regular macroscopic limit as the dynamics becomes deterministic. However, we find that if the power supplied to the demon is scaled up appropriately, the deterministic limit is avoided and the demon continues to work. The price to pay is a decreasing thermodynamic efficiency. Our work suggests that novel strategies may be found in nonequilibrium settings to bring to the macroscale non-trivial effects so far only observed at microscopic scales.
Lessons for SUSY from the LHC after the first run
Creators: name: Melzer-Pellmann, I. -A.
name: Pralavorio, P.
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: A review of direct searches for new particles predicted by Supersymmetry after the first run of the LHC is proposed. This review is based on the results provided by the ATLAS and CMS experiments.
description: 31 pages, 41 figures, Appear in the special issue of the EPJ C journal entitled "SUSY after the Higgs discovery"
Astronomy with Chaucer: using an astrolabe to determine planetary orbits
Creators: name: Robinson, Michael
Publisher: name: arXiv
Year: 2022
Subjects: subject: Popular Physics (physics.pop-ph)
subject: FOS: Physical sciences
subject: 97M50 (primary), 01A35 (secondary)

description: Armed with an astrolabe and Kepler's laws one can arrive at accurate estimates of the orbits of planets.
description: 28 pages, 19 figures
Accurate determination of the interaction between $Λ$ hyperons and nucleons from auxiliary field diffusion Monte Carlo calculations
Creators: name: Lonardoni, Diego
name: Pederiva, Francesco
name: Gandolfi, Stefano
Publisher: name: arXiv
Year: 2013
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: An accurate assessment of the hyperon-nucleon interaction is of great interest in view of recent observations of very massive neutron stars. The challenge is to build a realistic interaction that can be used over a wide range of masses and in infinite matter starting from the available experimental data on the binding energy of light hypernuclei. To this end, accurate calculations of the hyperon binding energy in a hypernucleus are necessary. We present a quantum Monte Carlo study of $Λ$ and $ΛΛ$ hypernuclei up to $A=91$. We investigate the contribution of two- and three-body $Λ$-nucleon forces to the $Λ$ binding energy. Ground state energies are computed solving the Schrödinger equation for non-relativistic baryons by means of the auxiliary field diffusion Monte Carlo algorithm extended to the hypernuclear sector. We show that a simple adjustment of the parameters of the $ΛNN$ three-body force yields a very good agreement with available experimental data over a wide range of hypernuclear masses. In some cases no experiments have been performed yet, and we give new predictions. The newly fitted $ΛNN$ force properly describes the physics of medium-heavy $Λ$ hypernuclei, correctly reproducing the saturation property of the hyperon separation energy.
description: 12 pages, 4 figures, 6 tables
SPM (SST Pointing Manager). Un software per automatizzare le osservazioni di "space debris" per il Telescopio Cassini di Loiano.
Creators: name: BRUNI, IVAN
Publisher: name: OAS Bologna
Year: 2020

description: In questo rapporto tecnico descrivo come si usa e come in breve funziona un nuovo software per automatizzare le osservazioni ottiche di detriti spaziali presso il Telescopio Cassini di Loiano
Simulating all multipartite non-signalling channels via quasiprobabilistic mixtures of local channels in generalised probabilistic theories
Creators: name: Cavalcanti, Paulo J.
name: Selby, John H.
name: Sikora, Jamie
name: Sainz, Ana Belén
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Non-signalling quantum channels -- relevant in, e.g., the study of Bell and Einstein-Podolsky-Rosen scenarios -- may be simulated via affine combinations of local operations in bipartite scenarios. Moreover, when these channels correspond to stochastic maps between classical variables, such simulation is possible even in multipartite scenarios. These two results have proven useful when studying the properties of these channels, such as their communication and information processing power, and even when defining measures of the non-classicality of physical phenomena (such as Bell non-classicality and steering). In this paper we show that such useful quasi-stochastic characterizations of channels may be unified and applied to the broader class of multipartite non-signalling channels. Moreover, we show that this holds for non-signalling channels in quantum theory, as well as in a larger family of generalised probabilistic theories. More precisely, we prove that non-signalling channels can always be simulated by affine combinations of corresponding local operations, provided that the underlying physical theory is locally tomographic -- a property that quantum theory satisfies. Our results then can be viewed as a generalisation of Refs.~[Phys. Rev. Lett. 111, 170403] and [Phys. Rev. A 88, 022318 (2013)] to the multipartite scenario for arbitrary tomographically local generalised probabilistic theories (including quantum theory). Our proof technique leverages Hardy's duotensor formalism, highlighting its utility in this line of research.
description: 26 pages, 4 figures, many diagrams, comments welcome!
Additional file 1 of Microarray analysis identification of key pathways and interaction network of differential gene expressions during osteogenic differentiation
Creators: name: Khodabandehloo, Fatemeh
name: Taleahmad, Sara
name: Aflatoonian, Reza
name: Rajaei, Farzad
name: Zandieh, Zahra
name: Nassiri-Asl, Marjan
name: Mohamadreza Baghaban Eslaminejad
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Physiology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Cancer
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: Plant Biology
subject: Computational Biology

description: Additional file 1:. Supplementary Figure 1. Venn diagram of molecular function (MF) and cellular component (CC) on days 8, 12, and 25. a Upregulated differentially expressed genes (DEG). b Downregulated DEGs. Supplementary Table 2. Hub genes for up- and downregulated genes ranked in CytoHubba. Supplementary Figure 2. Protein-protein interaction (PPI) network (STRING). Supplementary Figure 3. The ability of MSCs to differentiate into osteoblast and adipocyte
Wie Kinder mit Schwierigkeiten im Rechnenlernen am markierten Zahlenstrahl vorgehen: Eine Eye-Tracking-Studie
Creators: name: Simon, Anna Lisa
name: Schindler, Maike
Publisher: name: Gesellschaft für Didaktik der Mathematik
Year: 2023
Subjects: subject: Eye-Tracking
subject: markierter Zahlenstrahl
subject: Vorgehensweisen
subject: Schwierigkeiten im Rechnenlernen
subject: Grundschule
subject: Arithmetik
subject: Heterogenität & Inklusion im MU
subject: Sek I
subject: 510

description: Zusammenfassung. Der vorliegende Beitrag stellt eine Untersuchung zur Nutzung von Vorgehensweisen bei Aufgaben am markierten Zahlenstrahl von Kindern mit und ohne Schwierigkeiten im Rechnenlernen (SR) vor, bei dem Eye-Tracking (ET) verwendet und anhand der Blickbewegungen Vorgehensweisen identifiziert wurden. Es zeigte sich, dass Kinder mit SR Vorgehensweisen weniger aufgabenadäquat nutzten als Kinder ohne SR, wobei Kinder mit SR häufiger zählende Vorgehensweisen nutzen.
Supplementary figures and tables from Morphology and niche evolution influence hummingbird speciation rates
Creators: name: Barreto, Elisa
name: Lim, Marisa C. W.
name: Rojas, Danny
name: Dávalos, Liliana M.
name: Wüest, Rafael O.
name: Machac, Antonin
name: Graham, Catherine H.
Publisher: name: The Royal Society
Year: 2023
Subjects: subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: Ecology

description: Doc file with all supplementary figures and tables cited in the main text