cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Effective bi-layer model Hamiltonian and density-matrix renormalization group study for the high-Tc superconductivity in La$_{3}$Ni$_{2}$O$_{7}$ under high pressure
Creators: name: Shen, Yang
name: Qin, Mingpu
name: Zhang, Guang-Ming
Publisher: name: arXiv
Year: 2023
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: High-Tc superconductivity with possible $T_{c}\approx 80K$ has been reported in the single crystal of $\text{La}_{3}\text{Ni}_{2}\text{O}_{7}$ under high pressure. Based on the electronic structure given from the density functional theory calculations, we propose an effective bi-layer model Hamiltonian including both $3d_{z^{2}}$ and $3d_{x^{2}-y^{2}}$ orbital electrons of the nickel cations. The main feature of the model is that the $3d_{z^{2}}$ electrons form inter-layer $σ$-bonding and anti-bonding bands via the apical oxygen anions between the two layers, while the $3d_{x^{2}-y^{2}}$ electrons hybridize with the $3d_{z^{2}}$ electrons within each NiO$_2$ plane. The chemical potential difference of these two orbital electrons ensures that the $3d_{z^{2}}$ orbitals are close to half-filling and the $3d_{x^{2}-y^{2}}$ orbitals are near quarter-filling. The strong on-site Hubbard repulsion of the $3d_{z^{2}}$ orbital electrons gives rise to an effective inter-layer antiferromagnetic spin super-exchange $J$. Applying pressure can self-dope holes on the $3d_{z^{2}}$ orbitals with the same amount of electrons doped on the $3d_{x^{2}-y^{2}}$ orbitals. By performing numerical density-matrix renormalization group calculations on a minimum setup and focusing on the limit of large $J$ and small doping of $3d_{z^{2}}$ orbitals, we find the superconducting instability on both the $3d_{z^{2}}$ and $3d_{x^{2}-y^{2}}$ orbitals by calculating the equal-time spin singlet pair-pair correlation function. Our numerical results have provided useful insights in the high-Tc superconductivity in single crystal La$_3$Ni$_2$O$_7$ under high pressure.
description: 6 pages, 4 figures; published version
Direct correspondence between Newtonian gravitation and general relativity
Creators: name: Buchert, Thomas
Publisher: name: arXiv
Year: 2023
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present a strategy to obtain equations of general relativity for an irrotational dust continuum within a flow-orthogonal foliation of spacetime from the equations of Newtonian gravitation, and vice versa, without employing a weak field expansion or a limiting process on the speed of light. We argue that writing Newton's equations in a Lagrangian frame and relaxing integrability of vector gradients is sufficient to obtain equations that are identical to Einstein's equations in (3+1)-form when respecting the Lorentzian signature of the time parametrization. We discuss implications and provide an outlook on how to extend the obtained correspondence to more general spacetimes.
description: 6 pages; matches published version in PRD Letters
Nuclear Dominated Accretion Flows in Two Dimensions. I. Torus Evolution with Parametric Microphysics
Creators: name: Fernández, Rodrigo
name: Metzger, Brian D.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We explore the evolution of radiatively inefficient accretion disks in which nuclear reactions are dynamically important (`Nuclear Dominated Accretion Flows', or NuDAFs). Examples of such disks are those generated by the merger of a white dwarf with a neutron star or black hole, or by the collapse of a rotating star. Here we present two-dimensional hydrodynamic simulations that systematically explore the effect of adding a single nuclear reaction to a viscous torus. The equation of state, anomalous shear stress, and nuclear reactions are given parametric forms. Our results point to the existence of two qualitatively different regimes of NuDAF evolution: (1) steady accretion with quiescent burning; or (2) detonation of the disk. These outcomes are controlled primarily by the ratio of the nuclear energy released to the enthalpy at the burning radius. Disks detonate if this ratio exceeds a critical value (~1), and if burning occurs in regions where neutrino cooling is unimportant. Thermonuclear runaways are seeded by the turbulent mixing of hot ash with cold fuel at the burning front. Subcritical disks do not explode, but instead power a persistent collimated outflow of unbound material composed primarily of ash, with a mass-loss rate that increases with the nuclear binding energy released. We discuss the implications of our results for supernova-like counterparts from astrophysical events in the NuDAF regime. In particular, detonations following a white dwarf - neutron star merger could account for some subluminous Type Ia supernovae, such as the class defined by SN 2002cx.
description: Version accepted by ApJ. Corrected error in triple-alpha reaction. Minor changes otherwise. Animations at http://sns.ias.edu/~rafernan/nudaf/animations/
Entropy-current for dynamical black holes in Chern-Simons theories of gravity
Creators: name: Deo, Ishan
name: Dhivakar, Prateksh
name: Kundu, Nilay
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We construct an entropy current and establish a local version of the classical second law of thermodynamics for dynamical black holes in Chern-Simons (CS) theories of gravity. We work in a chosen set of Gaussian null coordinates and assume the dynamics to be small perturbations around the Killing horizon. In explicit examples of both purely gravitational and mixed gauge gravity CS theories in $(2+1)$ and $(4+1)$-dimensions, the entropy current is obtained by studying the off-shell structure of the equations of motion evaluated on the horizon. For the CS theory in $(2+1)$ dimensions, we argue that the second law holds to quadratic order in perturbations by considering it as a low energy effective field theory with the leading piece given by Einstein gravity. In all such examples, we show that the construction of entropy current is invariant under the reparameterization of the null horizon coordinates. Finally, extending an existing formalism for diffeomorphism invariant theories, we construct an abstract proof for the linearised second law in arbitrary Chern-Simons theories in any given odd dimensions by studying the off-shell equations of motion. As a check of consistency, we verify that the outcome of this algorithmic proof matches precisely with the results obtained in explicit examples.
description: V2: 39 pages + Appendices, Minor typos corrected, New subsection added in Appendix A.1, Published in JHEP
Updated constraints on $f(\mathcal{R})$ gravity from cosmography
Creators: name: Aviles, Alejandro
name: Bravetti, Alessandro
name: Capozziello, Salvatore
name: Luongo, Orlando
Publisher: name: arXiv
Year: 2012
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We address the issue of constraining the class of $f(\mathcal{R})$ able to reproduce the observed cosmological acceleration, by using the so called cosmography of the universe. We consider a model independent procedure to build up a $f(z)$-series in terms of the measurable cosmographic coefficients; we therefore derive cosmological late time bounds on $f(z)$ and its derivatives up to the fourth order, by fitting the luminosity distance directly in terms of such coefficients. We perform a Monte Carlo analysis, by using three different statistical sets of cosmographic coefficients, in which the only assumptions are the validity of the cosmological principle and that the class of $f(\mathcal{R})$ reduces to $Λ$CDM when $z\ll1$. We use the updated union 2.1 for supernovae Ia, the constrain on the $H_0$ value imposed by the measurements of the Hubble space telescope and the Hubble dataset, with measures of $H$ at different $z$. We find a statistical good agreement of the $f(\mathcal{R})$ class under exam, with the cosmological data; we thus propose a candidate of $f(\mathcal{R})$, which is able to pass our cosmological test, reproducing the late time acceleration in agreement with observations.
description: 10 pages, 9 figures, accepted for publication in Phys. Rev. D
Matrix Product State Representation without explicit local Hilbert Space Truncation with Applications to the Sub-Ohmic Spin-Boson Model
Creators: name: Frenzel, Max F.
name: Plenio, Martin B.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We present an alternative to the conventional matrix product state representation, which allows us to avoid the explicit local Hilbert space truncation many numerical methods employ. Utilising chain mappings corresponding to linear and logarithmic discretizations of the spin-boson model onto a semi-infinite chain, we apply the new method to the sub-ohmic SBM. We are able to reproduce many well-established features of the quantum phase transition, such as the critical exponent 1/2 predicted by mean-field theory. Via extrapolation of finite-chain results, we are able to determine the infinite-chain critical couplings at which the transition occurs and, in general, study the behaviour of the system well into the localised phase.
description: 8 pages, 8 figures
Horst Boog, Gerhard Krebs, Detlef Vogel, Das Deutsche Reich in der Defensive. Strategischer Luftkrieg in Europa, Krieg im Westen und in Ostasien 1943–1944/45, 2001
Creators: name: Alary, Éric
Publisher: name: Francia
Year: 2019

description: Francia, Bd. 31 Nr. 3 (2004)
On the origin of trigger-angle dependence of di-hadron correlations
Creators: name: Qian, Wei-Liang
name: Andrade, Rone
name: Gardim, Fernando
name: Grassi, Frederique
name: Hama, Yogiro
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The STAR Collaboration reported measurements of di-hadron azimuthal correlation in medium-central Au+Au collisions at 200 A$\,$GeV, where the data are presented as a function of the trigger particle's azimuthal angle relative to the event plane $ϕ_s $. In particular, it is observed that the away-side correlation evolves from single- to double-peak structure with increasing $ϕ_s$. In this work, we present the calculated correlations as functions of both $ϕ_s$ and particle transverse momentum $p_T $, using the hydrodynamic code NeXSPheRIO. The results are found to be in reasonable agreement with the STAR data. We further argue that the above $ϕ_s$ dependence of the correlation structure can be understood in terms of one-tube model, as due to an interplay between the background elliptic flow caused by the initial state global geometry and the flow produced by fluctuations.
description: 16 pages, 4 figures
Penalized estimation in high-dimensional hidden Markov models with state-specific graphical models
Creators: name: Städler, Nicolas
name: Mukherjee, Sach
Publisher: name: arXiv
Year: 2012
Subjects: subject: Methodology (stat.ME)
subject: Applications (stat.AP)
subject: FOS: Computer and information sciences

description: We consider penalized estimation in hidden Markov models (HMMs) with multivariate Normal observations. In the moderate-to-large dimensional setting, estimation for HMMs remains challenging in practice, due to several concerns arising from the hidden nature of the states. We address these concerns by $\ell_1$-penalization of state-specific inverse covariance matrices. Penalized estimation leads to sparse inverse covariance matrices which can be interpreted as state-specific conditional independence graphs. Penalization is nontrivial in this latent variable setting; we propose a penalty that automatically adapts to the number of states $K$ and the state-specific sample sizes and can cope with scaling issues arising from the unknown states. The methodology is adaptive and very general, applying in particular to both low- and high-dimensional settings without requiring hand tuning. Furthermore, our approach facilitates exploration of the number of states $K$ by coupling estimation for successive candidate values $K$. Empirical results on simulated examples demonstrate the effectiveness of the proposed approach. In a challenging real data example from genome biology, we demonstrate the ability of our approach to yield gains in predictive power and to deliver richer estimates than existing methods.
description: Published in at http://dx.doi.org/10.1214/13-AOAS662 the Annals of Applied Statistics (http://www.imstat.org/aoas/) by the Institute of Mathematical Statistics (http://www.imstat.org)
Erster Weltkrieg – Zweiter Weltkrieg: Ein Vergleich. Krieg, Kriegserlebnis, Kriegserfahrung in Deutschland, hg. von B. Thoss und H.-E. Volkmann, 2002
Creators: name: Spivak, Marcel
Publisher: name: Francia
Year: 2019

description: Francia, Bd. 31 Nr. 3 (2004)
Revisiting Maxwell-Smoluchowski theory: low surface roughness in straight channels
Creators: name: Chumley, Timothy
name: Feres, Renato
name: German, Luis Alberto Garcia
name: Yablonsky, Gregory
Publisher: name: arXiv
Year: 2023
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: 37H05, 37M25

description: The Maxwell-Smoluchowski (MS) theory of gas diffusion is revisited here in the context of gas transport in straight channels in the Knudsen regime of large mean free path. This classical theory is based on a phenomenological model of gas-surface interaction that posits that a fraction $\vartheta$ of molecular collisions with the channel surface consists of diffuse collisions, i.e., the direction of post-collision velocities is distributed according to the Knudsen Cosine Law, and a fraction $1-\vartheta$ undergoes specular reflection. From this assumption one obtains the value $\mathcal{D}=\frac{2-\vartheta}{\vartheta}\mathcal{D}_K$ for the self-diffusivity constant, where $\mathcal{D}_K$ is a reference value corresponding to $\vartheta=1$. In this paper we show that $\vartheta$ can be expressed in terms of micro- and macro-geometric parameters for a model consisting of hard spheres colliding elastically against a rigid surface with prescribed microgeometry. Our refinement of the MS theory is based on the observation that the classical surface scattering operator associated to the microgeometry has a canonical velocity space diffusion approximation by a generalized Legendre differential operator whose spectral theory is known explicitly. More specifically, starting from an explicit description of the effective channel surface microgeometry -- a concept which incorporates both the actual surface microgeometry and the molecular radius -- and using this operator approximation, we show that $\vartheta$ can be resolved into easily obtained geometric parameters.
description: 19 pages, 5 figures
Quantum superconducting criticality in graphene and topological insulators
Creators: name: Roy, Bitan
name: Juricic, Vladimir
name: Herbut, Igor F.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The field theory of the semimetal-superconductor quantum phase transition for graphene and surface states of topological insulators is presented. The Lagrangian possesses the global U(1) symmetry, with the self-interacting complex bosonic order-parameter and the massless Dirac fermions coupled through a Yukawa term. The same theory also governs the quantum critical behavior of graphene near the transition towards the bond-density-wave (Kekule) insulator. The local U(1) gauged version of the theory which describes the quantum semimetal-superconductor transition in the ultimate critical regime is also considered. Due to the Yukawa coupling the transitions are found to be always continuous, both with and without the fluctuating gauge field. The critical behavior is addressed within the dimensional regularization near four space-time dimensions, and the calculation of various universal quantities, including critical exponents and the universal mass-ratio, is reported.
description: 4 pages, no figures +(Supplementary: 6 pages and 5 figures), Published version, New discussion on pairing criticality of surface states of topological crystalline insulator, New references
Implementing Quantum Walks Using Orbital Angular Momentum of Classical Light
Creators: name: Goyal, Sandeep K
name: Roux, Filippus S
name: Forbes, Andrew
name: Konrad, Thomas
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We present an implementation scheme for a quantum walk in the orbital angular momentum space of a laser beam. The scheme makes use of a ring interferometer, containing a quarter-wave plate and a q plate. This setup enables one to perform an arbitrary number of quantum walk steps. In addition, the classical nature of the implementation scheme makes it possible to observe the quantum walk evolution in real time. We use nonquantum entanglement of the laser beam's polarization with its orbital angular momentum to implement the quantum walk.
Rational rigidity for E_8(p)
Creators: name: Guralnick, Robert
name: Malle, Gunter
Publisher: name: arXiv
Year: 2012
Subjects: subject: Group Theory (math.GR)
subject: Algebraic Geometry (math.AG)
subject: Number Theory (math.NT)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: 12F12, 20C33 (Primary) 20E28 (Secondary)

description: We prove the existence of certain rationally rigid triples E8 in good characteristic and thereby show that these groups over the prime field occur as Galois groups over the field of rational numbers. We show that these triples give rise to rigid triples in the algebraic group and prove that they generate an interesting subgroup in characteristic 0. As a byproduct we derive a remarkable symmetry between the character table of a finite reductive group and that of its dual group. We also give a classification of possible overgroups in exceptional groups containing regular unipotent elements.
description: The triples considered for F4 in the first paper are shown not to generate F4(p) but rather generate a subgroup contained in a parabolic subgroup over the prime field
Transportation efficiency of hydrodynamically coupled spherical oscillators in low Reynolds number fluids
Creators: name: Su, Weiwei
name: Izumida, Yuki
name: Kori, Hiroshi
Publisher: name: arXiv
Year: 2023
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: Most bacteria are driven by the cilia or flagella, consisting of a long filament and a rotary molecular motor through a short flexible hook. The beating pattern of these filaments shows synchronization properties from hydrodynamic interactions, especially in low Reynolds number fluids. Here, we introduce a model based on simple spherical oscillators which execute oscillatory movements in one dimension by an active force, as a simplified imitation of the movements of cilia or flagella. It is demonstrated that the flow, measured by the net transportation of a test particle, is generated by a chain of oscillators and enhanced by the hydrodynamic interactions between beads, with supports from both perturbative and numerical results. Transportation efficiency also highly correlates with hydrodynamic interactions. Increments of bead numbers are generally expected to produce stronger flow and efficiency, at least for small numbers of beads.
description: 8 pages, 11 figures
Two-Person Stochastic Duel with Energy Fuel Constraint Ammo
Creators: name: Kim, Song-Kyoo
Publisher: name: arXiv
Year: 2023
Subjects: subject: Optimization and Control (math.OC)
subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60C55, 60K10, 90B15, 90B50

description: This paper deals a novel variation of the versatile stochastic duel game, which incorporates an energy fuel constraint in a two-player duel game. The energy fuel not only measures the vitality of players but also determines the power of the shooting projectile. The game requires players to carefully balance their energy usage while trying to outmaneuver their opponent. This unique theoretical framework of the stochastic game model provides a valuable method for understanding strategic behavior in competitive environments, particularly in decision-making scenarios with fluctuation processes. The proposed game provides players with the challenge of optimizing their energy fuel usage while managing the risk of losing the game. The unique rules and constraints of the game in this research are expected for contributing insights into the decision-making strategies and behaviors of players in a wide range of practical applications.
description: Song-Kyoo Kim, Two-Person Stochastic Duel with Energy Fuel Constraint Ammo, Mathematics 11:7 (2023), 3625
An alternative functional renormalization group approach to the single impurity Anderson model
Creators: name: Kinza, Michael
name: Ortloff, Jutta
name: Bauer, Johannes
name: Honerkamp, Carsten
Publisher: name: arXiv
Year: 2012
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We present an alternative functional renormalization group (fRG) approach to the single-impurity Anderson model at finite temperatures. Starting with the exact self-energy and interaction vertex of a small system ('core') containing a correlated site, we switch on the hybridization with a non-interacting bath in the fRG-flow and calculate spectra of the correlated site. Different truncations of the RG-flow-equations and choices of the core are compared and discussed. Furthermore we calculate the linear conductance and the magnetic susceptibility as functions of temperature and interaction strength. The signatures of Kondo physics arising in the flow are compared with numerical renormalization group results.
description: 16 pages
C.-D. Krohn, A. Schildt (Hg.), Zwischen den Stühlen? Remigranten und Remigration in der deutschen Medienöffentlichkeit der Nachkriegszeit, 2002
Creators: name: Lemke, Ute
Publisher: name: Francia
Year: 2019

description: Francia, Bd. 31 Nr. 3 (2004)
Causality and stability analysis for the minimal causal spin hydrodynamics
Creators: name: Xie, Xin-Qing
name: Wang, Dong-Lin
name: Yang, Chen
name: Pu, Shi
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We perform the linear analysis of causality and stability for a minimal extended spin hydrodynamics up to second order of the gradient expansion. The first order spin hydrodynamics, with a rank-3 spin tensor being antisymmetric for only the last two indices, are proved to be acausal and unstable. We then consider the minimal causal spin hydrodynamics up to second order of the gradient expansion. We derive the necessary causality and stability conditions for this minimal causal spin hydrodynamics. Interestingly, the satisfaction of the stability conditions relies on the equations of state for the spin density and chemical potentials. Moreover, different with the conventional relativistic dissipative hydrodynamics, the stability of the theory seems to be broken at the finite wave-vector when the stability conditions are fulfilled at small and large wave-vector limits. It implies that the behavior in small and large wave-vector limits may be insufficient to determine the stability conditions for spin hydrodynamics in linear mode analysis.
description: 45 pages, 2 figures, typos corrected, published version
title: Ab initio description of monopole resonances in light- and medium-mass nuclei : II. Ab initio PGCM calculations in ⁴⁶Ti, ²⁸Si and ²⁴Mg
Creators: name: Porro, A.
name: Duguet, T.
name: Ebran, J.-P.
name: Frosini, M.
name: Roth, R.
name: Somà, V.
Publisher: name: Springer
Year: 2025

description: Giant resonances (GRs) are a striking manifestation of collective motions in atomic nuclei. The present paper is the second in a series of four dedicated to the use of the projected generator coordinate method (PGCM) for the ab initio determination of the isoscalar giant monopole resonance (GMR) in closed- and open-shell mid-mass nuclei. While the first paper was dedicated to quantifying various uncertainty sources, the present paper focuses on the first applications to three doubly-open shell nuclei, namely ⁴⁶Ti, ²⁸Si and ²⁴Mg. In particular, the goal is to investigate, starting from chiral effective field theory nuclear interactions, (i) the coupling of the GMR with the giant quadrupole resonance (GQR) in intrinsically-deformed nuclei, (ii) the possible impact of shape coexistence and shape mixing on the GMR, (iii) the GMR based on shape isomers and (iv) the impact of anharmonic effects on the monopole response. The latter is studied by comparing PGCM results to those obtained via the quasi-particle random phase approximation (QRPA), the traditional many-body approach to giant resonances, performed in a consistent setting. Eventually, PGCM results for sd-shell nuclei are in good agreement with experimental data, which is attributed to the capacity of the PGCM to capture the important fragmentation of the monopole response in light, intrinsically-deformed systems. Still, the comparison to data in ²⁸Si and ²⁴Mg illustrates the challenge (and the potential benefit) of extracting unambiguous experimental information.
Demographic and risk-group heterogeneity of the 90-90-90 targets- systematic review
Creators: name: Green, Dylan
name: Kharono, Brenda
name: Tordoff, Diana
name: Drain, Paul
name: Duerr, Ann
name: START Center
Publisher: name: Gates Open Research
Year: 2023

description: The START team conducted a systematic review to identify demographic and risk-behavior groups which were associated with awareness of HIV status, enrollment on HIV treatment, and achievement of viral suppression.
Quasinormal Modes of Bardeen Black Hole: Scalar Perturbations
Creators: name: Fernando, Sharmanthie
name: Correa, Juan
Publisher: name: arXiv
Year: 2012
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The purpose of this paper is to study quasinormal modes (QNM) of the Bardeen black hole due to scalar perturbations. We have done a thorough analysis of the QNM frequencies by varying the charge $q$, mass $M$ and the spherical harmonic index $l$. The unstable null geodesics are used to compute the QNM's in the eikonal limit. Furthermore, massive scalar field modes are also studied by varying the mass of the field. Comparisons are done with the QNM frequencies of the Reissner-Nordstrom black hole.
description: 25 figures, Published in Physical Review D. Reference numbers corrected
Open seeds by OLS: A mentoring & training program for open science ambassadors
Creators: name: M. Freeberg
name: F. Psomopoulos
name: D. Pilvar
name: B. Batut
name: OLS Community
Publisher: name: F1000 Research Limited
Year: 2023

description: Open Life Science (OLS) offers Open Seeds, a 16-week training and mentoring programs to enable researchers and their teams to lead open research projects in their respective domains and become open science ambassadors for their communities. With the combination of practical training and 1:1 support from our mentors, we guide participants to reflect on and apply open practices in the context of the socio-cultural environment where they conduct their research. Participants join the program with an open science project. They attend cohort calls to learn about open science practices and frameworks to apply hands-on open science skills including FAIR research principles and equitable and inclusive community practices. In mentoring calls every alternating week, they reflect on their progress and identify the next steps. To strengthen their skills, program graduates can re-join subsequent cohorts as mentors, call facilitators, and expert speakers. We offer micro-grants, live transcription, and other resources to make the program inclusive and accessible.

 Since 2020, we have run 7 cohorts and trained >300 participants from 6 continents, across 50+ low- and middle- (LMICs), and high-income countries (HICs), with the help of 120+ mentors and 150+ experts.

 This poster will describe the various aspects of the program and highlight all materials (including speaker deck, recorded videos, assignment materials, and organisational processes) that are shared openly utilising FAIR practices.
Accessible and scalable pipelines for fast and easy (foodborne) pathogens detection and tracking
Creators: name: Engy Nasr
name: Henger, Anna
name: Schindler, Tobias
name: Zierep, Paul
name: Gruning, Bjorn
name: Batut, Bérénice
Publisher: name: F1000 Research Limited
Year: 2023

description: Food contamination by pathogens affects around 600 million people a year and impacts socioeconomic development at different levels. During the investigation of a foodborne outbreak, a microbiological analysis of the potentially responsible food vehicle is performed in order to detect the responsible pathogens and identify the contamination source. Traditional methods require the isolation of the targeted pathogen, which is time-consuming, not always straightforward, nor successful. The metagenomics approach could solve this issue, by giving an overview of the genomic composition in the sample, including the food source itself, the microbial community, and any possible pathogens. It is not based on prior DNA isolation, nor limited to specific genes and it is more accurate. Metagenomics combined with Oxford Nanopore sequencing makes the identification of pathogens quicker, easier, more accessible, and more practical. But processing such data stay complex because of the lack of accessible, easy-to-use, and openly available pipelines.

 To solve this issue, we have implemented a series of FAIR Galaxy-based workflows. These workflows integrate state-of-the-art tools, visualization, and reports to detect and track pathogens from any - not only food - metagenomics Oxford Nanopore sample. The workflows were successfully tested on (1) spiked food with different Salmonella enterica strains at different concentrations, and (2) samples collected from humans, meat, and chicken in Palestine containing Campylobacter jejuni.

 The workflows are available on the European Galaxy server, but also on EOSC-Life WorkflowHub. They are annotated and documented as an e-learning tutorial available on Galaxy Training Network.
Experimental observation of double-peak structure of coincidence spectra in ultra-fast Spontaneous Parametric Down Conversion
Creators: name: Kalashnikov, Dmitry A.
name: Fedorov, Mikhail V.
name: Krivitsky, Leonid A.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: The requirement on the symmetry of the biphoton wave function results in a double peak structure of the coincidence spectra of Spontaneous Parametric Down Conversion (SPDC) [1]. In this work we report the experimental observation of this effect by careful tailoring parameters of the SPDC crystal, the ultra-fast pump laser, and the measurement setup. The results are shown to be relevant to quantum state engineering of ultra-fast polarization-, or frequency-entangled mixed states.
description: accepted for Phys Rev A
Wide-range Angle-sensitive Plasmonic Color Printing on Lossy-Resonator Substrates
Creators: name: Chowdhury, Sarah N.
name: Simon, Jeffrey
name: Nowak, Michał P.
name: Pagadala, Karthik
name: Nyga, Piotr
name: Fruhling, Colton
name: Bravo, Esteban Garcia
name: Maćkowski, Sebastian
name: Shalaev, Vladimir M.
name: Kildishev, Alexander V.
name: Boltasseva, Alexandra
Publisher: name: arXiv
Year: 2023
Subjects: subject: Optics (physics.optics)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: We demonstrate a sustainable, lithography-free process for generating non fading plasmonic colors with a prototype device that produces a wide range of vivid colors in red, green, and blue (RGB) ([0-1], [0-1], [0-1]) color space from violet (0.7, 0.72, 1) to blue (0.31, 0.80, 1) and from green (0.84, 1, 0.58) to orange (1, 0.58, 0.46). The proposed color-printing device architecture integrates a semi-transparent random metal film (RMF) with a metal back mirror to create a lossy asymmetric Fabry-Pérot resonator. This device geometry allows for advanced control of the observed color through the five-degree multiplexing (RGB color space, angle, and polarization sensitivity). An extended color palette is then obtained through photomodification process and localized heating of the RMF layer under various femtosecond laser illumination conditions at the wavelengths of 400 nm and 800 nm. Colorful design samples with total areas up to 10 mm2 and 100 μm resolution are printed on 300-nm-thick films to demonstrate macroscopic high-resolution color generation. The proposed printing approach can be extended to other applications including laser marking, anti-counterfeiting and chromo-encryption.
Otto Dov Kulka (Hg.), Deutsches Judentum unter dem Nationalsozialismus, Bd. 1: Dokumente zur Geschichte der Reichsvertreitung der deutschen Juden 1933-1939, 1997
Creators: name: Essner, Cornelia
Publisher: name: Francia
Year: 2019

description: Francia, Bd. 31 Nr. 3 (2004)
Constraining braneworlds with entanglement entropy
Creators: name: Geng, Hao
name: Karch, Andreas
name: Perez-Pardavila, Carlos
name: Randall, Lisa
name: Riojas, Marcos
name: Shashi, Sanjit
name: Youssef, Merna
Publisher: name: arXiv
Year: 2023
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 propose swampland criteria for braneworlds viewed as effective field theories of defects coupled to semiclassical gravity. We do this by exploiting their holographic interpretation. We focus on general features of entanglement entropies and their holographic calculations. Entropies have to be positive. Furthermore, causality imposes certain constraints on the surfaces that are used holographically to compute them, most notably a property known as causal wedge inclusion. As a test case, we explicitly constrain the Dvali--Gabadadze--Porrati term as a second-order-in-derivatives correction to the Randall--Sundrum action. We conclude by discussing the implications of these criteria for the question on whether entanglement islands in theories with massless gravitons are possible in Karch--Randall braneworlds.
description: 38 pages + references, 8 figures; v2: several clarifications made; refined argument for positivity of entanglement entropy; references added; typos fixed; matches published version
Associated $Z^0H^0$ production with leptonic decays at LHC in next-to-leading order QCD
Creators: name: Shi-Ming, Zhang
name: Ren-You, Zhang
name: Wen-Gan, Ma
name: Lei, Guo
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: In this work we investigate the effects of the littlest Higgs model (LHM) up to the QCD next-to-leading order (NLO) on the $Z^0H^0$ associated production at the CERN Large Hadron Collider (LHC). We study the dependences of the leading order and NLO QCD corrected integrated cross sections for this process on the factorization/renormalization scale and the LHM parameters. We also provide the distributions of the transverse momenta of final decay products $μ^-$ and $τ^-$. Our results show that the heavy neutral gauge bosons $Z_H$ and $A_H$ could induce significant discrepancies from the standard model predictions. It is found that when the LHM parameters are taken as $c=0.5$, $c^{\prime}=0.22$, $f=4 TeV$ and $μ=(M_H+M_Z)/2$, the effects at the $\sqrt{s}=14 TeV$ LHC from the heavy neutral gauge boson are about 12.83% and 10.37% to the leading order and NLO QCD corrected integrated cross sections, respectively. We also conclude that the NLO QCD corrections at the $\sqrt{s}=14 TeV$ LHC can obviously reduce the scale uncertainty of the integrated cross section, and significantly enhance the differential cross sections of $p_T^{μ^-}$ and $p_T^{τ^-}$. It demonstrates that the precision measurement of the $Z^0H^0$ associated production process at the LHC could provide the clue of the LHM physics.
description: 26 pages, 11 figures
Phase diagram determination at fivefold nuclear compression
Creators: name: Yong, Gao-Chan
Publisher: name: arXiv
Year: 2023
Subjects: subject: Nuclear Theory (nucl-th)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: In the standard model of particle physics, the strong force is characterized by the theory of quantum chromodynamics (QCD). It is commonly understood from QCD properties that hadrons, at sufficiently high temperatures or densities, melt into their constituent quarks, thereby undergoing a deconfinement transition to a new phase of quarks and gluons, often referred to as quark matter or quark-gluon plasma (QGP) \cite{qcd00,qcd01}. Although QGP has been observed in relativistic heavy-ion collisions \cite{qgp1,qgp2}, uncertainties remain about when the onset of deconfinement occurs. After comparing simulations from a reliable hadron and quark relativistic transport model with recent data from the STAR experiment, we determined that the onset of the hadron-quark phase transition occurs at about five times nuclear compression, corresponding to temperature $T\sim$ 112 MeV and baryon chemical potential $μ_{B}\sim$ 586 MeV, in the nuclear matter phase diagram. This discovery has significant implications for the studies of both the early and present universe \cite{ann2006}, including the fraction of dark matter formed in the early universe \cite{bhd2016,bhf1997,pbh20} and the structure and dynamics of neutron stars and their mergers \cite{nature2020}.
description: 6 pages, 5 figures, accepted by PLB
A proposal for a low-frequency axion search in the 1-2 $μ$eV range and below with the BabyIAXO magnet
Creators: name: Ahyoune, S.
name: Melcón, A. Álvarez
name: Cuendis, S. Arguedas
name: Calatroni, S.
name: Cogollos, C.
name: Devlin, J.
name: Díaz-Morcillo, A.
name: Díez-Ibáñez, D.
name: Döbrich, B.
name: Galindo, J.
name: Gallego, J. D.
name: García-Barceló, J. M.
name: Gimeno, B.
name: Golm, J.
name: Gu, Y.
name: Herwig, L.
name: Irastorza, I. G.
name: Lozano-Guerrero, A. J.
name: Malbrunot, C.
name: Miralda-Escudé, J.
name: Monzó-Cabrera, J.
name: Navarro, P.
name: Navarro-Madrid, J. R.
name: Redondo, J.
name: Reina-Valero, J.
name: Schmieden, K.
name: Schneemann, T.
name: Siodlaczek, M.
name: Ulmer, S.
name: Wuensch, W.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In the near future BabyIAXO will be the most powerful axion helioscope, relying on a custom-made magnet of two bores of 70 cm diameter and 10 m long, with a total available magnetic volume of more than 7 m$^3$. In this document, we propose and describe the implementation of low-frequency axion haloscope setups suitable for operation inside the BabyIAXO magnet. The RADES proposal has a potential sensitivity to the axion-photon coupling $g_{aγ}$ down to values corresponding to the KSVZ model, in the (currently unexplored) mass range between 1 and 2$~μ$eV, after a total effective exposure of 440 days. This mass range is covered by the use of four differently dimensioned 5-meter-long cavities, equipped with a tuning mechanism based on inner turning plates. A setup like the one proposed would also allow an exploration of the same mass range for hidden photons coupled to photons. An additional complementary apparatus is proposed using LC circuits and exploring the low energy range ($\sim10^{-4}-10^{-1}~μ$eV). The setup includes a cryostat and cooling system to cool down the BabyIAXO bore down to about 5 K, as well as appropriate low-noise signal amplification and detection chain.
A. Abramson, Die Geschichte des Fernsehens. Mit einem Nachwort des Herausgebers zur Geschichte des Fernsehens von 1942 bis heute, übersetzt und hg. von H. Walitsch, 2002
Creators: name: Combes, Laurence
Publisher: name: Francia
Year: 2019

description: Francia, Bd. 32 Nr. 3 (2005)
Cube spaces and the multiple term return times theorem
Creators: name: Zorin-Kranich, Pavel
Publisher: name: arXiv
Year: 2012
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: 28D05 (Primary) 37A05 (Secondary)

description: We give a new proof of Rudolph's multiple term return times theorem based on Host-Kra structure theory. Our approach provides characteristic factors for all terms, works for arbitrary tempered Følner sequences and also yields a multiple term Wiener-Wintner-type return times theorem for nilsequences.
description: v2: 13 p., main result has been extended to tempered F{\o}lner sequences
On the Integrability of Planar N=2 Superconformal Gauge Theories
Creators: name: Gadde, Abhijit
name: Liendo, Pedro
name: Rastelli, Leonardo
name: Yan, Wenbin
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the integrability properties of planar N=2 superconformal field theories in four dimensions. We show that the spin chain associated to the planar dilation operator of N=2 superconformal QCD fails to be integrable at two loops. In our analysis we focus on a closed SU(2|1) sector, whose two-loop spin chain we fix by symmetry arguments (up to a few undetermined coefficients). It turns out that the Yang-Baxter equation for magnon scattering is not satisfied in this sector. On the other hand, we suggest that the closed SU(2,1|2) sector, which exists in any N=2 superconformal gauge theory, may be integrable to all loops.
description: 20 pages, 1 figure. v2: minor changes, JHEP version
Establishing the ELIXIR microbiome community
Creators: name: Batut, Bérénice
name: Pelletier, Eric
name: Finn, Rob
name: Heil, Katharina
Publisher: name: F1000 Research Limited
Year: 2023

description: Microbiome research has grown substantially over the past decade in terms of the range of biomes sampled, taxa identified, and the volume of sequence data derived from the samples. In particular, experimental approaches such as shotgun metagenomics, metabarcoding, and metatranscriptomics have provided profound insights into the vast, hitherto vastly unknown, microbial biodiversity.
 The ELIXIR Marine Metagenomics Community, initiated amongst researchers focusing on marine microbiomes, concentrated on promoting standards around microbiome-derived sequence-based analysis, understanding the gaps in methods and reference databases, and finding solutions to computational overheads of performing such analyses. Nevertheless, the methods used and the challenges faced are not confined to marine studies but are broadly applicable to all other biomes.
 Thus, expanding this Community to a more inclusive ELIXIR Microbiome Community will encompass a broad range of biomes. Furthermore, engaging with a larger number of researchers will improve the efficiency and sustainability of bioinformatics infrastructure for microbiome resources (standards, data, tools, workflows, training), which will enable a deeper understanding of the composition, function and taxonomy of the entire microbial community as well as the definition and adoption of dedicated FAIR standards and methods within the Community.

 This poster will describe the various activities that the ELIXIR Marine Metagenomics Community has undertaken towards the transition to a broader Microbiome community. We will outline the proposed roadmap, highlighting how we see this new community fitting with the other ELIXIR communities and platforms.
Verification of quantum discord
Creators: name: Rahimi-Keshari, Saleh
name: Caves, Carlton M.
name: Ralph, Timothy C.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We introduce a measurement-based method for verifying quantum discord of any bipartite quantum system. We show that by performing an informationally complete POVM (IC-POVM) on one subsystem and checking the commutativity of the conditional states of the other subsystem, quantum discord from the second subsystem to the first can be verified. This is an improvement upon previous methods, which enables us to efficiently apply our method to continuous-variable systems, as IC-POVMs are readily available from homodyne or heterodyne measurements. We show that quantum discord for Gaussian states can be verified by checking whether the peaks of the conditional Wigner functions corresponding to two different outcomes of heterodyne measurement coincide at the same point in the phase space. Using this method, we also prove that the only Gaussian states with zero discord are product states; hence, Gaussian states with Gaussian discord have nonzero quantum discord.
description: 5 pages
Eine frühchristliche Marmorplatte mit Weinrankenornament in Trier
Creators: name: Merten, Hiltrud
Publisher: name: Funde und Ausgrabungen im Bezirk Trier
Year: 2019

description: [nicht vorhanden]
description: Funde und Ausgrabungen im Bezirk Trier, Bd. 18 (1986): Funde und Ausgrabungen im Bezirk Trier : Aus der Arbeit des Rheinischen Landesmuseums Trier
Lie groups in the symmetric group: reducing Ulam's problem to the simple case
Creators: name: Conversano, Annalisa
name: Monod, Nicolas
Publisher: name: arXiv
Year: 2023
Subjects: subject: Group Theory (math.GR)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics

description: Ulam asked whether all Lie groups can be represented faithfully on a countable set. We establish a reduction of Ulam's problem to the case of simple Lie groups. In particular, we solve the problem for all solvable Lie groups and more generally Lie groups with a linear Levi component. It follows that every amenable locally compact second countable group acts faithfully on a countable set.