cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Strong decay widths and mass spectra of charmed baryons
Creators: name: Garcia-Tecocoatzi, H.
name: Giachino, A.
name: Li, J.
name: Ramirez-Morales, A.
name: Santopinto, E.
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The total decay widths of the charmed baryons are calculated by means of the $^3P_0$ model. Our calculations consider in the final states: the charmed baryon-(vector/pseudoscalar) meson pairs and the (octet/ decuplet) baryon-(pseudoscalar/vector) charmed meson pairs, within a constituent quark model. Furthermore, we calculate the masses of the charmed baryon ground states and their excitations up to the $D$-wave in a constituent quark model both in the three-quark and in the quark-diquark schemes, utilizing a Hamiltonian model based on a harmonic oscillator potential plus a mass splitting term that encodes the spin, \mbox{spin-orbit}, isospin, and flavor interactions. The parameters of the Hamiltonian model are fitted to the experimental data of the charmed baryon masses and decay widths. As the experimental uncertainties of the data affect the fitted model parameters, we have thoroughly propagated these uncertainties into our predicted charmed baryon masses and decay widths via a Monte Carlo bootstrap approach, which is often absent in other theoretical studies on this subject. Our quantum number assignments and predictions of the masses and strong partial decay widths are in reasonable agreement with the available data. Thus, our results show the ability to guide future measurements in LHCb, Belle and Belle II experiments. Finally, the appendices provide some details of our calculations, in which we include the flavor coupling coefficients, which are useful for further theoretical investigations.
description: 29 pages, 12 figures
Intervenção federal militar, o discurso da "doença" e a capacidade de julgar
Creators: name: Miotto, Marcio
Publisher: name: Zenodo
Year: 2018
Subjects: historia das ciencias, biologia, politica, brasil, intervenção militar, ciencia e sociedade, cts

description: O texto explora relações entre ciência e sociedade no uso de linguagem biologizante para justificar a intervenção federal militar no Brasil em 2018. Miotto, M. Intervenção federal militar, o discurso da “doença” e a capacidade de julgar, publicado em Estadão - Estado da Arte, em 20/02/2018 https://estadodaarte.estadao.com.br/intervencao-federal-o-discurso-da-doenca-e-a-capacidade-de-julgar/ Depositado sob doi: 10.5281/zenodo.4290467
Monolayer and bilayer PtCl$_3$: Energetics, magnetism, and band topology
Creators: name: Jiao, Yalong
name: Zeng, Xu-Tao
name: Chen, Cong
name: Gao, Zhen
name: Sheng, Xian-Lei
name: Yang, Shengyuan A.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Two-dimensional (2D) magnetic materials hosting nontrivial topological states are interesting for fundamental research as well as practical applications. Recently, the topological state of 2D Weyl half-semimetal (WHS) was proposed, which hosts fully spin polarized Weyl points robust against spin-orbit coupling in a 2D ferromagnetic system, and single-layer PtCl$_3$ was predicted as a platform for realizing this state. Here, we perform an extensive search of 2D PtCl$_3$ structures, by using the particle swarm optimization technique and density functional theory calculation. We show that the desired PtCl$_3$ phase corresponds to the most stable one at its stoichiometry. The 2D structure also possesses good thermal stability up to 600 K. We suggest SnS$_2$ as a substrate for the growth of 2D PtCl$_3$, which has excellent lattice matching and preserves the WHS state in PtCl$_3$. We find that uniaxial strains along the zigzag direction maintain the WHS state, whereas small strains along the armchair direction drives a topological phase transition from the WHS to a quantum anomalous Hall (QAH) insulator phase. Furthermore, we study bilayer PtCl$_3$ and show that the stacking configuration has strong impact on the magnetism and the electronic band structure. Particularly, the $AA'$ stacked bilayer PtCl$_3$ realizes an interesting topological state -- the 2D antiferromagnetic mirror Chern insulator, which has a pair of topological gapless edge bands. Our work provides guidance for the experimental realization of 2D PtCl$_3$ and will facilitate the study of 2D magnetic topological states, including WHS, QAH insulator, and magnetic mirror Chern insulator states.
Observables for General Relativity related to geometry
Creators: name: Duch, Paweł
name: Kamiński, Wojciech
name: Lewandowski, Jerzy
name: Świeżewski, Jedrzej
Publisher: name: arXiv
Year: 2014
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We present a new scheme of defining invariant observables for general relativistic systems. The scheme is based on the introduction of an observer which endowes the construction with a straightforward physical interpretation. The observables are invariant with respect to spatial diffeomorphisms which preserve the observer. The limited residual spatial gauge freedom is studied and fully understood. A full canonical analysis of the observables is presented: we analyze their variations, Poisson algebra and discuss their dynamics. Lastly, the observables are used to solve the vector constraint, which triggers a possible considerable reduction of the degrees of freedom of general relativistic theories.
description: 33 pages, 1 figure
Additional file 7 of The economic burden of malaria: a systematic review
Creators: name: Andrade, Mônica V.
name: Noronha, Kenya
name: Diniz, Bernardo P. C.
name: Guedes, Gilvan
name: Carvalho, Lucas R.
name: Silva, Valéria A.
name: Calazans, Júlia A.
name: Santos, André S.
name: Silva, Daniel N.
name: Castro, Marcia C.
Publisher: name: figshare
Year: 2022
Subjects: subject: Medicine
subject: Ecology
subject: FOS: Biological sciences
subject: Cancer
subject: Science Policy
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: Computational Biology

description: Additional file 7. Distribution of selected papers according to the type of stratification.
Supplementary Materials from The scale and dynamics of COVID-19 epidemics across Europe
Creators: name: Dye, Christopher
name: Cheng, Russell C. H.
name: Dagpunar, John S.
name: Williams, Brian G.
Publisher: name: The Royal Society
Year: 2020
Subjects: subject: Health Care
subject: Diseases
subject: 111706 Epidemiology
subject: FOS: Health sciences

description: The number of COVID-19 deaths reported from European countries has varied more than 100-fold. In terms of coronavirus transmission, the relatively low death rates in some countries could be due to low intrinsic (e.g. low population density) or imposed contact rates (e.g. non-pharmaceutical interventions) among individuals, or because fewer people were exposed or susceptible to infection (e.g. smaller populations). Here, we develop a flexible empirical model (skew-logistic) to distinguish among these possibilities. We find that countries reporting fewer deaths did not generally have intrinsically lower rates of transmission and epidemic growth, and flatter epidemic curves. Rather, countries with fewer deaths locked down earlier, had shorter epidemics that peaked sooner and smaller populations. Consequently, as lockdowns were eased, we expected, and duly observed, a resurgence of COVID-19 across Europe.
Searching for superspreaders of information in real-world social media
Creators: name: Pei, Sen
name: Muchnik, Lev
name: Andrade, Jose S.
name: Zheng, Zhiming
name: Makse, Hernan A.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Social and Information Networks (cs.SI)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: A number of predictors have been suggested to detect the most influential spreaders of information in online social media across various domains such as Twitter or Facebook. In particular, degree, PageRank, k-core and other centralities have been adopted to rank the spreading capability of users in information dissemination media. So far, validation of the proposed predictors has been done by simulating the spreading dynamics rather than following real information flow in social networks. Consequently, only model-dependent contradictory results have been achieved so far for the best predictor. Here, we address this issue directly. We search for influential spreaders by following the real spreading dynamics in a wide range of networks. We find that the widely-used degree and PageRank fail in ranking users' influence. We find that the best spreaders are consistently located in the k-core across dissimilar social platforms such as Twitter, Facebook, Livejournal and scientific publishing in the American Physical Society. Furthermore, when the complete global network structure is unavailable, we find that the sum of the nearest neighbors' degree is a reliable local proxy for user's influence. Our analysis provides practical instructions for optimal design of strategies for "viral" information dissemination in relevant applications.
description: 12 pages, 7 figures
A candidate location for Planet Nine from an interstellar meteoroid: The messenger hypothesis
Creators: name: Socas-Navarro, Hector
Publisher: name: arXiv
Year: 2022
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: The existence of a hypothetical Planet 9 lurkng in the outer solar system has been invoked as a plausible explanation for the anomalous clustering in the orbits of trans-Neptunian objects. Here we propose that some meteoroids arriving at Earth could serve as messengers with the potential of revealing the presence of a hitherto undiscovered massive object. The peculiar meteor CNEOS 2014-01-08, recently put forward as the first interstellar meteor, might be one such messenger. The meteor radiant is in the maximum probability region calculated for the Planet 9 location in previous works. The odds of this coincidence being due to chance are ~1%. Furthermore, some statistical anomalies about CNEOS 2014-01-08 are resolved under the hypothesis that it was flung at Earth by a gravitational encounter. Integrating its trajectory backwards in time would then lead to the region of the sky where Planet 9 is more likely to reside. Based on the available data, we propose the region at coordinates R.A. 53.0 +/- 4.3 deg, declination 9.2 +/- 1.3 deg as a plausible candidate location for Planet 9.
description: Accepted for publication in ApJ
Kink interactions in the (1+1)-dimensional $φ^6$ model
Creators: name: Gani, Vakhid A.
name: Kudryavtsev, Alexander E.
name: Lizunova, Mariya A.
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: We study kink scattering processes in the (1+1)-dimensional $φ^6$ model in the framework of the collective coordinate approximation. We find critical values of the initial velocities of the colliding kinks. These critical velocities distinguish different regimes of collisions. The exact equation of motion for the $φ^6$ model is also solved numerically with the same initial conditions. We discuss advantages and disadvantages of the collective coordinate approximation, and also outline its applicability limits. Resonance phenomena and the so-called escape windows are also observed in the kink collisions.
description: 27 pages, 22 figures; some changes to match the published version
First BGG operators on homogeneous conformal geometries
Creators: name: Gregorovič, Jan
name: Zalabová, Lenka
Publisher: name: arXiv
Year: 2022
Subjects: subject: Differential Geometry (math.DG)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 53C18, 53C30, 53B30, 58J70, 58J60

description: We study first BGG operators and their solutions on homogeneous conformal geometries. We focus on conformal Killing tensors, conformal Killing--Yano forms and twistor spinors in particular. We develop an invariant calculus that allows us to find solutions explicitly using only algebraic computations. We also discuss applications to holonomy reductions and conserved quantities of conformal circles. We demonstrate our result on examples of homogeneous conformal geometries coming mostly from general relativity.
description: 40 pages, comments welcomed, several typos corrected
Late-time cosmology of scalar-tensor theories with universal multiplicative coupling between the scalar field and the matter Lagrangian
Creators: name: Minazzoli, Olivier
name: Hees, Aurélien
Publisher: name: arXiv
Year: 2014
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We investigate the late-time cosmological behaviour of scalar-tensor theories with a universal multiplicative coupling between the scalar field and the matter Lagrangian in the matter era. This class of theory encompasses the case of the massless string dilaton (see Damour and Polyakov, General Relativity and Gravitation, 26, 1171) as well as a theory with an intrinsic decoupling mechanism in the solar system (see Minazzoli and Hees, Phys. Rev. D 88, 041504). The cosmological evolution is studied in the General Relativity limit justified by solar system constraints on the gravitation theory. The behaviour of these cosmological evolutions are then compared to two types of observations: the constraints on temporal variations of the constants of Nature and the distance-luminosity measurements. In particular, the non-minimal coupling implies that the distance-luminosity relation is modified compared to General Relativity. Theories producing a cosmological behaviour in agreement with these observations are identified.
description: 17 pages - accepted Phys. Rev. D
Anisotropic Landau-Lifshitz sigma models from q-deformed AdS_5 x S^5 superstrings
Creators: name: Kameyama, Takashi
name: Yoshida, Kentaroh
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: We consider bosonic subsectors of the q-deformed AdS_5 x S^5 superstring action and study the classical integrable structure of anisotropic Landau-Lifshitz sigma models (LLSMs) derived by taking fast-moving limits. The subsectors are 1) deformed AdS_3 x S^1 and 2) R x deformed S^3. The cases 1) and 2) lead to a time-like warped SL(2) LLSM and a squashed S^3 LLSM, respectively. For each of them, we construct an infinite number of non-local conserved charges and show a quantum affine algebra at the classical level. Furthermore, a pp-wave like limit is applied for the case 1). The resulting system is a null-like warped SL(2) LLSM and exhibits a couple of Yangians through non-local gauge transformations associated with Jordanian twists.
description: 38 pages, 1 figure, typos corrected, minor comments and references added
Terrain Analysis in StarCraft 1 and 2 as Combinatorial Optimization
Creators: name: Richoux, Florian
Publisher: name: arXiv
Year: 2022
Subjects: subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: Terrain analysis in Real-Time Strategy games is a necessary step to allow spacial reasoning. The goal of terrain analysis is to gather and process data about the map topology and properties to have a qualitative spatial representation. On StarCraft games, all previous works on terrain analysis propose a crisp analysis based on connected component detection, Voronoi diagram computation and pruning, and region merging. Those methods have been implemented as game-specific libraries, and they can only offer the same kind of analysis for all maps and all users. In this paper, we propose a way to consider terrain analysis as a combinatorial optimization problem. Our method allows different kinds of analysis by changing constraints or the objective function in the problem model. We also present a library, Taunt, implementing our method and able to handle both StarCraft 1 and StarCraft 2 maps. This makes our library a universal tool for StarCraft bots with different spatial representation needs. We believe our library unlocks the possibility to have real adaptive AIs playing StarCraft, and can be the starting point of a new wave of bots.
description: Accepted to IEEE CEC 2022
Horseshoe crab spawning in the Delaware Bay: a potential response to sea surface
Creators: name: Thatcher, Sean
Publisher: name: No Publisher Supplied
Year: 2020

description: The American horseshoe crab Limulus polyphemus (HSC) spawns in their greatest densities in the Delaware Bay; however, over-harvests have reduced their population size by 90% in the late 20th century and climate change is degrading their spawning habitat. Because their eggs are an important food source for threatened shorebird species and adjust the timing they spawn due to ocean temperatures efforts were made to understand sea surface temperatures (SSTs) throughout the Bayshore area, patterns of egg cluster abundances and surface densities, identify a SST threshold for peak spawning activity, and use physical characteristics related to specific sites identified as increasing egg abundances. The highest egg abundances – specifically clusters – were in the southern region and decreased northward, while SSTs showed the opposite pattern. Surface egg densities were also the most abundant in the Southern region but are believed to be transported widely within and between regions. The CART analysis identified that the five-day moving average for SST of 17° C when abundance shifted from pre-peak to post-peak and currently occurs between May 29 and June 5. This temperature threshold was determined to have advanced by several days for all regions and beaches with the Northern region experiencing the most significant advancement, suggesting that a potential does exist for a mismatch to develop if HSCs spawn earlier to match this advancement. Beach nourishment activities will be important for the continued existence of suitable habitat for HSC spawning in the Bayshore area and should focus on increasing the physical parameters that increase cluster abundance such as having sand depth of at least 40 cm and beach width of at least 22 m. As climate change continues to alter the physical habitat in the Bayshore area, continued monitoring of when HSCs are spawning as a response to SST will be important to understand if this mismatch is developing, potentially jeopardizing the recovering red knot population. The MUR dataset is a useful and time and cost-efficient way to monitor SSTs in the Bayshore area for both beaches and regions, allowing it to be implemented in surveying HSC spawning to identify more specific temperature patterns.
Finding the effective Polyakov line action for SU(3) gauge theories at finite chemical potential
Creators: name: Greensite, Jeff
name: Langfeld, Kurt
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: Motivated by the sign problem, we calculate the effective Polyakov line action corresponding to certain SU(3) lattice gauge theories on a ${16^3 \times 6}$ lattice via the "relative weights" method introduced in our previous articles. The calculation is carried out at $β=5.6,5.7$ for the pure gauge theory, and at $β=5.6$ for the gauge field coupled to a relatively light scalar particle. In the latter example we determine the effective theory also at finite chemical potential, and show how observables relevant to phase structure can be computed in the effective theory via mean field methods. In all cases a comparison of Polyakov line correlators in the effective theory and the underlying lattice gauge theory, computed numerically at zero chemical potential, shows accurate agreement down to correlator magnitudes of order $10^{-5}$. We also derive the effective Polyakov line action corresponding to a gauge theory with heavy quarks and large chemical potential, and apply mean field methods to extract observables.
description: 30 pages, 16 figures. v2: some additional comments added, Fig. 15 replaced
Symmetric Tamm-Dancoff q-oscillator: representation, quasi-Fibonacci nature, accidental degeneracy and coherent states
Creators: name: Chung, Won Sang
name: Gavrilik, A. M.
name: Kachurik, I. I.
name: Rebesh, A. P.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mathematical Physics (math-ph)
subject: Quantum Gases (cond-mat.quant-gas)
subject: High Energy Physics - Theory (hep-th)
subject: Nuclear Theory (nucl-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In this paper we propose a symmetric q-deformed Tamm-Dancoff (S-TD) oscillator algebra and study its representation, coordinate realization, and main properties. In particular, the non-Fibonacci (more exactly, quasi-Fibonacci) nature of S-TD oscillator is established, the possibility of relating it to certain p,q-deformed oscillator family shown, the occurrence of the pairwise accidental degeneracy proven. We also find the coherent state for the S-TD oscillator and show that it satisfies completeness relation. Main advantage of the S-TD model over usual Tamm-Dancoff oscillator is that due to (qq^{-1})- symmetry it admits not only real, but also complex (phase-like) values of the deformation parameter q.
description: 14 pages; v2: minor revision, references and paragraph in Conclusions added, accepted for publication in J.Phys.A
Information transmission with continuous variable quantum erasure channels
Creators: name: Zhong, Changchun
name: Oh, Changhun
name: Jiang, Liang
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum capacity, as the key figure of merit for a given quantum channel, upper bounds the channel's ability in transmitting quantum information. Identifying different type of channels, evaluating the corresponding quantum capacity and finding the capacity-approaching coding scheme are the major tasks in quantum communication theory. Quantum channel in discrete variables has been discussed enormously involving various error models, while error model in the continuous variable channel has been less studied due to the infinite dimensional problem. In this paper, we investigate a general continuous variable quantum erasure channel. By defining an effective subspace of the continuous variable system, we find a continuous variable random coding model. We then derive the quantum capacity of the continuous variable erasure channel in the framework of decoupling theory. The discussion in this paper fills the gap of quantum erasure channel in continuous variable settings and sheds light on the understanding of other type of continuous variable quantum channels.
Additional file 8 of The economic burden of malaria: a systematic review
Creators: name: Andrade, Mônica V.
name: Noronha, Kenya
name: Diniz, Bernardo P. C.
name: Guedes, Gilvan
name: Carvalho, Lucas R.
name: Silva, Valéria A.
name: Calazans, Júlia A.
name: Santos, André S.
name: Silva, Daniel N.
name: Castro, Marcia C.
Publisher: name: figshare
Year: 2022
Subjects: subject: Medicine
subject: Ecology
subject: FOS: Biological sciences
subject: Cancer
subject: Science Policy
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: Computational Biology

description: Additional file 8. Quality assessment of the selected papers.
Fermion dynamics in presence of non abelian monopoles
Creators: name: Morano, Alejandro
name: Santillán, Osvaldo
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: In the present letter, the dynamics of a spin one-half particle with non abelian charge, interacting with a non abelian monopole like configuration, is studied. In the non spinning case, these equations correspond to the Wong ones [1], and the associated dynamics has been extensively studied in [2]-[3]. The classical limit of a spinning particle in an abelian was studied in [4], where an interpretation of the celebrated Callan-Rubakov effect [5]-[6] was obtained in purely classical terms. The present work studies an interpolating situation, in which spin and non abelian charges are turned on. The corresponding equations are obtaining by taking into account some earlier works about spinning particles [7]-[9]. The conservation laws are studied in this context, and it is found that energy and some generalization of angular momentum are conserved just in particular limits. This is a reflection that the non abelian interaction contains gauge field quartic interaction, which spoils the symmetries leading to these conservation laws. The precession of the particle is analyzed and compared with its abelian counterpart in this limit.
description: Some comments and explanations expanded, and some misprints of the previous version were corrected
Efficiently Exploring Multi-Dimensional Parameter Spaces Beyond the Standard Model
Creators: name: Argüelles, Carlos A.
name: Foppiani, Nicolò
name: Hostert, Matheus
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: We propose a method to ease the challenges of exploring multi-dimensional parameter spaces in beyond-the-Standard Model theories. We evaluate the model likelihood for any choice of parameters by sampling the theory parameters intelligently and building a Kernel Density Estimator. By reducing the number of expensive Monte-Carlo simulations, this method provides a more efficient way to test complex theories. We illustrate our technique to set new limits on a short-lived heavy neutrino $N$, proposed as an explanation of anomalies in neutrino experiments. Using a search for lepton pairs in the T2K near detector, we find exclusion limits on the model parameters in a vast region of parameter space, fully exploiting the advantages of our new method. With a single Monte Carlo simulation, we obtain the differential event rate for arbitrary choices of model parameters, allowing us to cast limits on any slice of the model parameter space. We conclude that $N$ particles with lifetimes greater than $c τ^0 \gtrsim 3~$cm are excluded by T2K data. We also derive model-independent constraints in terms of the total rate, lifetime, and $N$ mass and provide an approximated analytical formula. This method can be applied in other branches of physics to explore the landscape of theory parameters efficiently.
description: 19 pages, 15 figures
Absorption of a massive scalar field by a charged black hole
Creators: name: Benone, Carolina L.
name: de Oliveira, Ednilton S.
name: Dolan, Sam R.
name: Crispino, Luís C. B.
Publisher: name: arXiv
Year: 2014
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We calculate the absorption cross section of a massive neutral scalar field impinging upon a Reissner-Nordström black hole. First, we derive key approximations in the high- and low-frequency regimes. Next, we develop a numerical method to compute the cross section at intermediate frequencies, and present a selection of results. Finally, we draw together our complementary approaches to give a quantitative full-spectrum description of absorption.
description: 12 pages, 12 figures. To match published version
Learning of error statistics for the detection of quantum phases
Creators: name: Jamadagni, Amit
name: Kazemi, Javad
name: Weimer, Hendrik
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We present a binary classifier based on neural networks to detect gapped quantum phases. By considering the errors on top of a suitable reference state describing the gapped phase, we show that a neural network trained on the errors can capture the correlation between the errors and can be used to detect the phase boundaries of the gapped quantum phase. We demonstrate the application of the method for matrix product state calculations for different quantum phases exhibiting local symmetry-breaking order, symmetry-protected topological order, and intrinsic topological order.
description: 10 pages, 7 figures
Genomics Lessons with GEA - RNA-Seq CURES
Creators: name: Buonaccorsi, Vince
name: Cervantes, Marcella
name: Chalker, Douglas
name: Goytia, Maira
name: Leung, Wilson
name: Lorenz, Laurel
name: Reed, Laura
name: Rosenwald, Anne
name: Schroeder, Analyne
name: Wiley, Emily
name: Williams, Jason
Publisher: name: QUBES Educational Resources
Year: 2020

description: Our BIOME Group worked towards developing a set of learning goals for faculty who plan to launch a CURE based on RNA-Seq data. We also developed a workflow for analysis of either prokaryotic or eukaryotic RNA-Seq data with existing tools.
Quark and gluon spin-2 form factors to two-loops in QCD
Creators: name: de Florian, Daniel
name: Mahakhud, Maguni
name: Mathews, Prakash
name: Mazzitelli, Javier
name: Ravindran, V.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We present complete two-loop radiative corrections to the graviton-quark-antiquark form factor G^* \rightarrow q \overline q and graviton-gluon-gluon form factor G^* \rightarrow g g in SU(N) gauge theory with n_f light flavours using d-dimensional regularisation to all orders in \varepsilon=d-4. This is an important ingredient to next-to-next-to-leading order QCD corrections to hadronic scattering processes in models with large extra-dimensions where Kaluza-Klein graviton modes couple to Standard Model fields. We show that these form factors obey Sudakov integro-differential equation and the resulting cusp, collinear and soft anomalous dimensions coincide with those of electroweak vector boson and gluon form factors. We also find the universal behaviour of the infrared singularities in accordance with the proposal by Catani.
description: 14 pages, LaTeX; references added, version to appear in JHEP
Additional file 1 of Microglial–oligodendrocyte interactions in myelination and neurological function recovery after traumatic brain injury
Creators: name: Song, Shanshan
name: Hasan, Md Nabiul
name: Yu, Lauren
name: Paruchuri, Satya S.
name: Bielanin, John P.
name: Metwally, Shamseldin
name: Oft, Helena C. M.
name: Fischer, Sydney G.
name: Fiesler, Victoria M.
name: Sen, Tanusree
name: Gupta, Rajaneesh K.
name: Foley, Lesley M.
name: Hitchens, T. Kevin
name: Dixon, C. Edward
name: Cambi, Franca
name: Sen, Nilkantha
name: Sun, Dandan
Publisher: name: figshare
Year: 2022
Subjects: subject: Medicine
subject: Cell Biology
subject: Molecular Biology
subject: Neuroscience
subject: Physiology
subject: FOS: Biological sciences
subject: Pharmacology
subject: Immunology
subject: FOS: Clinical medicine
subject: 111714 Mental Health
subject: FOS: Health sciences
subject: Hematology

description: Additional file 1: Supplementary Information.
Nanocriticality in the magnetic phase transition of CoO nanoparticles
Creators: name: Kamminga, Machteld E.
name: Birk, Jonas Okkels
name: Hjøllum, Jari í
name: Jacobsen, Henrik
name: Lass, Jakob
name: Koch, Thorbjørn L.
name: Christensen, Niels B.
name: Niedermayer, Christof
name: Keller, Lukas
name: Kuhn, Luise Theil
name: Ulrikkeholm, Elisabeth T.
name: Brok, Erik
name: Frandsen, Cathrine
name: Lefmann, Kim
Publisher: name: arXiv
Year: 2022
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The universal theory of critical phase transitions describes the critical behavior at second-order phase transitions in infinitely large systems. With the increased contemporary interest in nanoscale materials, we investigated CoO nanoparticles by means of neutron scattering and found how the theory of critical phenomena breaks down in the nanoscale regime. Using CoO as a model system, we have identified a size-dependent nanocritical temperature region close to the antiferromagnetic phase transition where the magnetic correlation length of the nanoparticles converges to a constant value, which is significantly smaller than that of the saturated state found at low temperatures. This is in clear contrast to the divergence around $T_{\rm N}$ observed for bulk systems. Our findings of nanocriticality in the magnetic phase transition is of great importance for the understanding of phase transitions at the nanoscale.
نظرية الألعاب والتفاعلات الاستراتيجية
Creators: name: أ. د. هاني جرجس عياد
Publisher: name: Zenodo
Year: 2023
Subjects: نظرية المباريات أو الألعاب

description: شرح وتبسيط نظرية الألعاب أو نظرية المباريات وتطبيقاتها في مختلف مجالات الحياة الاقتصادية والسياسية والاجتماعية، مع التوضيح بالأمثلة التطبيقية الشيقة والمبسطة.
Synthesis and Electrochemical Properties of Tetrasubstituted Tetraphenylethenes
Creators: name: Schreivogel, Alina
name: Maurer, Jörg
name: Winter, Rainer
name: Baro, Angelika
name: Laschat, Sabine
Publisher: name: Universität Regensburg
Year: 2006
Subjects: subject: Cyclic voltammetry; McMurry reaction; Spectroelectrochemistry; Tetraphenylethenes
subject: 540 Chemie

description: Tetrakis(4-acetoxy- and 4-benzoyloxyphenyl)ethenes 1f,g were obtained by acylation of tetrakis(4-hydroxyphenyl)ethene 1b. Ullmann etherification of 4,4’-dihydroxybenzophenone 2b and subsequent McMurry coupling yielded tetrakis(phenoxyphenyl)ethene 1i. The tetrakis( acetamidophenyl)ethene 1h was prepared in three steps from tetraphenylethene 1c via nitration, Raney-Ni reduction and acetylation. Alternatively, trifluoroacetamide 1j, 2-methylhexanamide 1k, and 2,4-dimethylbenzamide 1l with less tendency to form 2D hydrogen bonding networks and thus increased solubility as compared to 1h were prepared by acylation of 4,4’-diaminobenzophenone 2a and subsequent McMurry coupling. Compounds 1f–l were investigated by cyclic voltammetry. While phenylether derivative 1i displays single electron processes during oxidation, a two-electron process was discovered for trifluoroacetamide 1j as was also supposed for the esters 1f,g. In addition, comproportionation constants were shown to be dependent on the solvent. In situ IR spectroelectrochemistry provided evidence for quinoidal type substructures in the dioxidized forms of tetraphenylethenes 1.
Exciton Binding Energy of Monolayer WS2
Creators: name: Zhu, Bairen
name: Chen, Xi
name: Cui, Xiaodong
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The optical properties of monolayer transition metal dichalcogenides (TMDC) feature prominent excitonic natures. Here we report an experimental approach toward measuring the exciton binding energy of monolayer WS2 with linear differential transmission spectroscopy and two-photon photoluminescence excitation spectroscopy (TP-PLE). TP-PLE measurements show the exciton binding energy of 0.71eV around K valley in the Brillouin zone. The trion binding energy of 34meV, two-photon absorption cross section 4X10^{4}cm^{2}W^{-2}S^{-1} at 780nm and exciton-exciton annihilation rate around 0.5cm^{2}/s are experimentally obtained.
description: 5page,3 figures
Additional file 1 of Farm management practices, biosecurity and influenza a virus detection in swine farms: a comprehensive study in colombia
Creators: name: Karl, Ciuoderis-Aponte
name: Andres, Diaz
name: Carlos, Muskus
name: Peña, Mario
name: Juan, Hernández-Ortiz
name: Jorge, Osorio
Publisher: name: figshare
Year: 2022
Subjects: subject: Medicine
subject: Biotechnology
subject: Ecology
subject: FOS: Biological sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Science Policy

description: Supplementary Material 1
Coherent control techniques in three-level quantum sensing
Creators: name: Xu, Hang
name: Song, Xue-Ke
name: Wang, Dong
name: Ye, Liu
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum coherent control of a quantum system with high-fidelity is rather important in quantum computation and quantum information processing. There are many control techniques to reach these targets, such as resonant excitation, adiabatic passages, shortcuts to adiabaticity, and so on. However, for a single pulse to realize population transfer, the external tiny error has a trivial influence on the final population. The repeated application of the same pulse will greatly amplify the error effect, making it easy to be detected. Here, we propose to measure small control errors in three-level quantum systems by coherent amplification of their effects, using several coherent control techniques. For the two types of Hamiltonian with SU(2) dynamic symmetry, we analyze how the fidelity of population transfer are affected by Rabi frequencies fluctuation and static detuning deviation, based on the pulse sequence with alternating and same phases, respectively. It is found that the sensitivity of detecting these errors can be effectively amplified by the control pulse sequences. Furthermore, we discuss the efficiency of sensing the two errors with these control techniques by comparing the full width at half maximum of the population profiles. The results provide an accurate and reliable way for sensing the weak error in three-level quantum systems by applying repeatedly the coherent control pulse.
description: 10 pages, 8 figures
Mobility transition in a dynamic environment
Creators: name: Basu, Urna
name: Maes, Christian
Publisher: name: arXiv
Year: 2014
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Depending on how the dynamical activity of a particle in a random environment is influenced by an external field $E$, its differential mobility at intermediate $E$ can turn negative. We discuss the case where for slowly changing random environment the driven particle shows negative differential mobility while that mobility turns positive for faster environment changes. We illustrate this transition using a 2D-lattice Lorentz model where a particle moves in a background of simple exclusion walkers. The effective escape rate of the particle (or minus its collision frequency) which is essential for its mobility-behavior depends both on $E$ and on the kinetic rate $γ$ of the exclusion walkers. Large $γ$, i.e., fast obstacle motion, amounts to merely rescaling the particle's free motion with the obstacle density, while slow obstacle dynamics results in particle motion that is more singularly related to its free motion and preserves the negative differential mobility already seen at $γ=0$. In more general terms that we also illustrate using one-dimensional random walkers, the mobility transition is between the time-scales of the quasi-stationary regime and that of the fluid limit.
Generalized Thouless Pumps in 1+1-dimensional Interacting Fermionic Systems
Creators: name: Ohyama, Shuhei
name: Shiozaki, Ken
name: Sato, Masatoshi
Publisher: name: arXiv
Year: 2022
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The Thouless pump is a phenomenon in which $\mathrm{U}(1)$ charges are pumped from an edge of a fermionic system to another edge. The Thouless pump has been generalized in various dimensions and for various charges. In this paper, we investigate the generalized Thouless pumps of fermion parity in both trivial and non-trivial phases of $1+1$-dimensional interacting fermionic short range entangled (SRE) states. For this purpose, we use matrix product states (MPSs). MPSs describe many-body systems in $1+1$ dimensions, and can characterize SRE states algebraically. We prove fundamental theorems for fermionic MPSs (fMPSs) and use them to investigate the generalized Thouless pumps. We construct non-trivial pumps in both the trivial and non-trivial phases and we show the stability of the pumps against interactions. Furthermore, we define topological invariants for the generalized Thouless pumps in terms of fMPSs and establish consistency with existing results. These are invariants of the family of SRE states that are not captured by the higher dimensional Berry curvature. We also argue a relation between the topological invariants of the generalized Thouless pump and the twist of the $K$-theory in the Donovan-Karoubi formulation.
description: 59 pages, 4 figures
On accumulated spectrograms
Creators: name: Abreu, Luís Daniel
name: Gröchenig, Karlheinz
name: Romero, José Luis
Publisher: name: arXiv
Year: 2014
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: 81S30, 45P05, 94A12, 42C25, 42C40

description: We study the eigenvalues and eigenfunctions of the time-frequency localization operator $H_Ω$ on a domain $Ω$ of the time-frequency plane. The eigenfunctions are the appropriate prolate spheroidal functions for an arbitrary domain $Ω$. Indeed, in analogy to the classical theory of Landau-Slepian-Pollak, the number of eigenvalues of $H_Ω$ in $[1-δ, 1]$ is equal to the measure of $Ω$ up to an error term depending on the perimeter of the boundary of $Ω$. Our main results show that the spectrograms of the eigenfunctions corresponding to the large eigenvalues (which we call the accumulated spectrogram) form an approximate partition ofunity of the given domain $Ω$. We derive both asymptotic, non-asymptotic, and weak $L^2$ error estimates for the accumulated spectrogram. As a consequence the domain $Ω$ can be approximated solely from the spectrograms of eigenfunctions without information about their phase.
description: 21 pages, 3 figures
Blackouts et pannes électriques en série
Creators: name: Meyer, Bruno
Publisher: name: SEE
Year: 2019

description: Depuis juin dernier, la presse s’est fait l’écho de plusieurs pannes électriques les qualifiant à chaque fois de blackouts. Si ce terme frappe les esprits, c’est qu’il est synonyme de panne généralisée sur un vaste territoire, privant d’électricité la population, les industries et les services non dotés de systèmes de secours.
From Green-Kubo to the full Boltzmann kinetic approach to heat transport in crystals and glasses
Creators: name: Fiorentino, Alfredo
name: Baroni, Stefano
Publisher: name: arXiv
Year: 2022
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We show that vertex corrections to the quasi-harmonic Green-Kubo theory of heat transport in insulators naturally lead to a generalisation of the expression for the conductivity that could be derived from the linearized Boltzmann equation, when the effects of the full scattering matrix are accounted for. Our results, which are obtained from the Mori-Zwanzig memory-function formalism, provide a fully ab initio derivation of the linearized Boltzmann transport equation and establish a connection between two recently proposed unified approaches to heat transport in insulating crystals and glasses.
Automatic inference of latent emotion from spontaneous facial micro-expressions
Creators: name: Zhang, Liangfei
Publisher: name: The University of St Andrews
Year: 2023
Subjects: Latent emotion recognition
Spontaneous micro-expression analysis
Affective computing
Computer vision
Multi-modal learning

description: Emotional states exert a profound influence on individuals' overall well-being, impacting them both physically and psychologically. Accurate recognition and comprehension of human emotions represent a crucial area of scientific exploration. Facial expressions, vocal cues, body language, and physiological responses provide valuable insights into an individual's emotional state, with facial expressions being universally recognised as dependable indicators of emotions. This thesis centres around three vital research aspects concerning the automated inference of latent emotions from spontaneous facial micro-expressions, seeking to enhance and refine our understanding of this complex domain. Firstly, the research aims to detect and analyse activated Action Units (AUs) during the occurrence of micro-expressions. AUs correspond to facial muscle movements. Although previous studies have established links between AUs and conventional facial expressions, no such connections have been explored for micro-expressions. Therefore, this thesis develops computer vision techniques to automatically detect activated AUs in micro-expressions, bridging a gap in existing studies. Secondly, the study explores the evolution of micro-expression recognition techniques, ranging from early handcrafted feature-based approaches to modern deep-learning methods. These approaches have significantly contributed to the field of automatic emotion recognition. However, existing methods primarily focus on capturing local spatial relationships, neglecting global relationships between different facial regions. To address this limitation, a novel third-generation architecture is proposed. This architecture can concurrently capture both short and long-range spatiotemporal relationships in micro-expression data, aiming to enhance the accuracy of automatic emotion recognition and improve our understanding of micro-expressions. Lastly, the thesis investigates the integration of multimodal signals to enhance emotion recognition accuracy. Depth information complements conventional RGB data by providing enhanced spatial features for analysis, while the integration of physiological signals with facial micro-expressions improves emotion discrimination. By incorporating multimodal data, the objective is to enhance machines' understanding of latent emotions and improve latent emotion recognition accuracy in spontaneous micro-expression analysis.
A systematic study of exact solutions in second-order conformal hydrodynamics
Creators: name: Hatta, Yoshitaka
name: Noronha, Jorge
name: Xiao, Bo-Wen
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: In this paper we present the details of our previous work on exact solutions in second-order conformal hydrodynamics together with a number of new solutions found by mapping Minkowski space onto various curved spacetimes such as anti-de Sitter space and hyperbolic space. We analytically show how the solutions of ideal hydrodynamics are modified by the second-order effects including vorticity. We also find novel boost-invariant exact solutions which exist only in second-order hydrodynamics and have an unusual dependence on the proper time.
description: 32 pages, 2 figures; 2nd version with some typo corrected
Vers un accélérateur de particules encore plus sensible
Creators: name: Deschamps, André
Publisher: name: SEE
Year: 2019

description: Le Large Hadron Collider (LHC) du CERN, réputé pour la mise en évidence du boson de Higgs, va augmenter sa capacité d’un facteur 10 à partir de 2026. Les travaux ont déjà commencé. Il devrait permettre entre autres de valider la théorie de la supersymétrie.
Le refroidissement nano-photonique
Creators: name: Hauet, Jean-Pierre
name: Leconte, Marc
Publisher: name: SEE
Year: 2019

description: Des chercheurs de l’université du Michigan ont inversé la polarisation d’une LED et ont démontré la possibilité de refroidir ainsi un objet, tel qu’un composant électronique, situés à quelques dizaines de nanomètres. Cette technique pourrait être utilisée pour refroidir des circuits électroniques.