cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
On the Universality of the Bound-Zone Peculiar Velocity Profile
Creators: name: Lee, Jounghun
Publisher: name: arXiv
Year: 2016
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: A numerical evidence for the universality of the bound-zone peculiar velocity profile in a LambdaCDM universe is presented. Analyzing the dark matter halo catalogs from the Millennium-II simulation, we determine the average peculiar velocity profiles of the objects located in the bound zones around massive group-size halos at various redshifts and compare them to an analytic formula characterized by two parameters, the amplitude and slope of the profile. The best-fit values of the two parameters are found to be robust against the changes of the mass scales and the key cosmological parameters. It is also found that the amplitude and slope parameters of the bound-zone peculiar velocity profile are constant but only in the limited ranges of redshifts. In the dark matter dominated epoch corresponding to z> 0.6 the two parameters have constant values. In the transition period corresponding to 0.2=< z=< 0.6 when the density of Lambda begins to exceed that of dark matter the two parameters grow almost linearly with redshifts. At later epochs z<0.2 when the Lambda-domination prevails the two parameters regain constancy settling upon higher constant values. Noting that the length of the transition period depends on the amount of Lambda and speculating that the linear evolution of the profile with redshifts in the transition period is a unique feature of the Lambda-dominated universe, we suggest that the redshift evolution of the bound-zone peculiar velocity profile should be a powerful local discriminator of dark energy candidates.
description: accepted for publication in ApJ, a mistake in the calculation of the bound-zone peculiar velocity profile corrected
Finite electro-elasticity with physics-augmented neural networks
Creators: name: Klein, Dominik K.
name: Ortigosa, Rogelio
name: Martínez-Frutos, Jesús
name: Weeger, Oliver
Publisher: name: arXiv
Year: 2022
Subjects: subject: Computational Engineering, Finance, and Science (cs.CE)
subject: FOS: Computer and information sciences

description: In the present work, a machine learning based constitutive model for electro-mechanically coupled material behavior at finite deformations is proposed. Using different sets of invariants as inputs, an internal energy density is formulated as a convex neural network. In this way, the model fulfills the polyconvexity condition which ensures material stability, as well as thermodynamic consistency, objectivity, material symmetry, and growth conditions. Depending on the considered invariants, this physics-augmented machine learning model can either be applied for compressible or nearly incompressible material behavior, as well as for arbitrary material symmetry classes. The applicability and versatility of the approach is demonstrated by calibrating it on transversely isotropic data generated with an analytical potential, as well as for the effective constitutive modeling of an analytically homogenized, transversely isotropic rank-one laminate composite and a numerically homogenized cubic metamaterial. These examinations show the excellent generalization properties that physics-augmented neural networks offer also for multi-physical material modeling such as nonlinear electro-elasticity.
Self-Adjointness of the Dirac Hamiltonian for a Class of Non-Uniformly Elliptic Boundary Value Problems
Creators: name: Finster, Felix
name: Röken, Christian
Publisher: name: arXiv
Year: 2015
Subjects: subject: Mathematical Physics (math-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Analysis of PDEs (math.AP)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We consider a boundary value problem for the Dirac equation in a smooth, asymptotically flat Lorentzian manifold admitting a Killing field which is timelike near and tangential to the boundary. A self-adjoint extension of the Dirac Hamiltonian is constructed. Our results also apply to the situation that the space-time includes horizons, where the Hamiltonian fails to be elliptic.
description: 14 pages, LaTeX, 1 figure, minor improvements (published version)
Integrals of products of Hurwitz zeta functions and the Casimir effect in $ϕ^4$ field theories
Creators: name: Shpot, M. A.
name: Chaudhary, M. P.
name: Paris, R. B.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: High Energy Physics - Theory (hep-th)
subject: Complex Variables (math.CV)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 11M35, 11B68, 33B15, 33E20

description: We evaluate two integrals over $x\in [0,1]$ involving products of the function $ζ_1(a,x)\equiv ζ(a,x)-x^{-a}$ for $\Re (a)>1$, where $ζ(a,x)$ is the Hurwitz zeta function. The evaluation of these integrals for the particular case of integer $a\geq 2$ is also presented. As an application we calculate the $O(g)$ weak-coupling expansion coefficient $c_{1}(\varepsilon)$ of the Casimir energy for a film with Dirichlet-Dirichlet boundary conditions, first stated by Symanzik [Schrödinger representation and Casimir effect in renormalizable quantum field theory, Nucl. Phys. B 190 (1981) 1-44] in the framework of $gϕ^4_{4-\varepsilon}$ theory.
description: To appear in Journal of Classical Analysis
SnR platform Test Cases and overall system evaluation results Final version
Creators: name: Cigheri, Stefano
name: Symeonidis, Ioannis
name: Spanidis, Pavlos
name: Chatzigeorgiou, Panagiotis
name: Benekos, Ioannis
name: Zompras, Aris
name: Politi, Elena
name: Gharrad, Hana
name: Sklavidis, Iosif
name: Karma, Sofia
name: Sedda, Giulia
name: Aeroluci, Francesco
name: Muller, Nikolas
name: Razvan Gliga
name: Thanos Siouras
name: Panunzi, Simona
name: Merlini, Marco
Publisher: name: Zenodo
Year: 2022
Subjects: Search and rescue
test cases
system evaluation
platform

description: The Deliverable D7.10, titled “SnR platform Test Cases and overall system evaluation results final version”, continue and terminate the work done in the previous D7.9 deliverable related to the testing of the overall platform and each equipment developed within the WP7 in Search & Rescue Project.
 The document is divided in two main chapters: The first chapter is related to the components’ tests, i.e. the tests done by every partner to test locally the components under its responsibility. For this reason, a recap of all the components is done and then for everyone, it is provided a description of how the component has been tested and which are the main results obtained. The second chapter focus on the S&R use cases and analyze every use case one by one. As several components take part in every use case execution, the analysis is done by following the relations and the communication between the various components within the use case. So the second chapter is more focused on high level relations between the components and the overall result of the tests conducted for the use case execution.
Superconductivity near a quantum critical point in the extreme retardation regime
Creators: name: Yuzbashyan, Emil A.
name: Kiessling, Michael K. -H.
name: Altshuler, Boris L.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We study fermions at quantum criticality with extremely retarded interactions of the form $V(ω_l)=(g/|ω_l|)^γ$, where $ω_l$ is the transferred Matsubara frequency. This system undergoes a normal-superconductor phase transition at a critical temperature $T=T_c$. The order parameter is the frequency-dependent gap function $Δ(ω_n)$ as in the Eliashberg theory. In general, the interaction is extremely retarded for $γ\gg 1$, except at low temperatures $γ>3$ is sufficient. We evaluate the normal state specific heat, $T_c$, the jump in the specific heat, $Δ(ω_n)$ near $T_c$, and the Landau free energy. Our answers are asymptotically exact in the limit $γ\to\infty$. At low temperatures, we prove that the global minimum of the free energy is nondegenerate and determine the order parameter, the free energy, and the specific heat. These answers are exact for $T\to0$ and $γ>3$. We also uncover and investigate an instability of the $γ$ model: negative specific heat at $T\to0$ and just above $T_c$.
description: 15 pages, 4 figures, 1 table, refs updated & text polished
Asymptotic structure and coarse Lipschitz geometry of Banach spaces
Creators: name: Braga, Bruno de Mendonça
Publisher: name: arXiv
Year: 2016
Subjects: subject: Functional Analysis (math.FA)
subject: FOS: Mathematics

description: In this paper, we study the coarse Lipschitz geometry of Banach spaces with several asymptotic properties. Specifically, we look at asymptotically uniformly smoothness and convexity, and several distinct Banach-Saks-like properties. Among other results, we characterize the Banach spaces which are either coarsely or uniformly homeomorphic to $T^{p_1}\oplus \ldots \oplus T^{p_n}$, where each $T^{p_j}$ denotes the $p_j$-convexification of the Tsirelson space, for $p_1,\ldots,p_n\in (1,\ldots, \infty)$, and $2\not\in\{p_1,\ldots ,p_n\}$. We obtain applications to the coarse Lipschitz geometry of the $p$-convexifications of the Schlumprecht space, and some hereditarily indecomposable Banach spaces. We also obtain some new results on the linear theory of Banach spaces.
Comparison of Deep Learning and Deterministic Algorithms for Control Modeling
Creators: name: Zhai, Hanfeng
name: Sands, Timothy
Publisher: name: arXiv
Year: 2022
Subjects: subject: Dynamical Systems (math.DS)
subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: Controlling nonlinear dynamics arise in various engineering fields. We present efforts to model the forced van der Pol system control using physics-informed neural networks (PINN) compared to benchmark methods, including idealized nonlinear feedforward (FF) control, linearized feedback control (FB), and feedforward-plus-feedback combined (C). The aim is to implement circular trajectories in the state space of the van der Pol system. A designed benchmark problem is used for testing the behavioral differences of the disparate controllers and then investigating controlled schemes and systems of various extents of nonlinearities. All methods exhibit a short initialization accompanying arbitrary initialization points. FF control successfully converges to the desired trajectory, and PINN executes good controls with higher stochasticity observed for higher-order terms based on the phase portraits. In contrast, combined control failed. Varying trajectory amplitudes revealed that FF, FB, and combined control all fail for unity nonlinear damping gain. Traditional control methods display a robust fluctuation for higher-order terms. For some various nonlinearities, PINN failed to implement the desired trajectory instead of becoming "trapped" in the phase of a small radius, yet FB successfully implemented controls. PINN generally exhibits lower relative errors for varying targeted trajectories. However, PINN also shows evidently higher computational burden compared with traditional control theory methods, with at least more than 30 times longer control time compared with benchmark idealized nonlinear feed-forward control. This manuscript proposes a comprehensive comparative study for future controller employment considering deterministic and machine learning approaches.
Analyzing the impact of SARS-CoV-2 variants on respiratory sound signals
Creators: name: Bhattacharya, Debarpan
name: Dutta, Debottam
name: Sharma, Neeraj Kumar
name: Chetupalli, Srikanth Raj
name: Mote, Pravin
name: Ganapathy, Sriram
name: C, Chandrakiran
name: Nori, Sahiti
name: K, Suhail K
name: Gonuguntla, Sadhana
name: Alagesan, Murali
Publisher: name: arXiv
Year: 2022
Subjects: subject: Audio and Speech Processing (eess.AS)
subject: Machine Learning (cs.LG)
subject: Signal Processing (eess.SP)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: The COVID-19 outbreak resulted in multiple waves of infections that have been associated with different SARS-CoV-2 variants. Studies have reported differential impact of the variants on respiratory health of patients. We explore whether acoustic signals, collected from COVID-19 subjects, show computationally distinguishable acoustic patterns suggesting a possibility to predict the underlying virus variant. We analyze the Coswara dataset which is collected from three subject pools, namely, i) healthy, ii) COVID-19 subjects recorded during the delta variant dominant period, and iii) data from COVID-19 subjects recorded during the omicron surge. Our findings suggest that multiple sound categories, such as cough, breathing, and speech, indicate significant acoustic feature differences when comparing COVID-19 subjects with omicron and delta variants. The classification areas-under-the-curve are significantly above chance for differentiating subjects infected by omicron from those infected by delta. Using a score fusion from multiple sound categories, we obtained an area-under-the-curve of 89% and 52.4% sensitivity at 95% specificity. Additionally, a hierarchical three class approach was used to classify the acoustic data into healthy and COVID-19 positive, and further COVID-19 subjects into delta and omicron variants providing high level of 3-class classification accuracy. These results suggest new ways for designing sound based COVID-19 diagnosis approaches.
Spin ordered ground state and thermodynamic behaviors of the spin-3/2 kagome Heisenberg antiferromagnet
Creators: name: Liu, Tao
name: Li, Wei
name: Su, Gang
Publisher: name: arXiv
Year: 2016
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Three different tensor network optimization algorithms are employed to accurately determine the ground state and thermodynamic properties of the spin-3/2 kagome Heisenberg antiferromagnet. We found that the $\sqrt{3} \times \sqrt{3}$ state, rather than the $q = 0$ state, is the ground state of this system, and such an ordered state is melted at any finite temperature, thereby clarifying the existing experimental controversies. A 1/3-magnetization plateau in the magnetic curve is observed, being consistent with the experimental observation. The absence of a zero-magnetization plateau indicates a gapless spin excitation that is further supported by the thermodynamic asymptotic behaviors of the susceptibility and specific heat. At low temperatures, the specific heat is shown to exhibit a $\sqrt{T}$ behavior, and the susceptibility approaches a finite constant as $T\rightarrow 0$. Our TN results of thermodynamic properties are compared with those from high temperature series expansion. In addition, we observe a quantum phase transition between $q = 0$ and $\sqrt{3}\times\sqrt{3}$ states in a spin-3/2 kagome XXZ model at the critical point $Δ_c = 0.408$. This study provides reliable and useful information for further explorations on high spin kagome physics.
description: 5 pages, 6 figures + 4 pages of supplemental material
Sensitivity of entanglement measures in bipartite pure quantum states
Creators: name: Georgiev, Danko D.
name: Gudder, Stanley P.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Entanglement measures quantify the amount of quantum entanglement that is contained in quantum states. Typically, different entanglement measures do not have to be partially ordered. The presence of a definite partial order between two entanglement measures for all quantum states, however, allows for meaningful conceptualization of sensitivity to entanglement, which will be greater for the entanglement measure that produces the larger numerical values. Here, we have investigated the partial order between the normalized versions of four entanglement measures based on Schmidt decomposition of bipartite pure quantum states, namely, concurrence, tangle, entanglement robustness and Schmidt number. We have shown that among those four measures, the concurrence and the Schmidt number have the highest and the lowest sensitivity to quantum entanglement, respectively. Further, we have demonstrated how these measures could be used to track the dynamics of quantum entanglement in a simple quantum toy model composed of two qutrits. Lastly, we have employed state-dependent entanglement statistics to compute measurable correlations between the outcomes of quantum observables in agreement with the uncertainty principle. The presented results could be helpful in quantum applications that require monitoring of the available quantum resources for sharp identification of temporal points of maximal entanglement or system separability.
description: 28 pages, 6 figures
Two interpretations of thin-shell instantons
Creators: name: Chen, Pisin
name: Hu, Yao-Chieh
name: Yeom, Dong-han
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: For O(4)-symmetric instantons, there are two complementary interpretations for their analytic continuations. One is the nothing-to-something interpretation, where the initial and final hypersurfaces are disconnected by Euclidean manifolds. The other is the something-to-something interpretation, introduced by Brown and Weinberg, where the initial and final hypersurfaces are connected by the Euclidean manifold. These interpretations have their own pros and cons and hence they are complementary. In this paper, we consider analytic continuations of thin-shell instantons that have less symmetry, i.e., the spherical symmetry. When we consider the Farhi-Guth-Guven/Fischler-Morgan-Polchinski tunneling, the something-to-something interpretation has been used in the usual literature. On the other hand, we can apply the nothing-to-something interpretation with some limited conditions. We argue that for both interpretations, we can give the consistent decay rate. As we apply and interpret what follows the nothing-to-something interpretation, a stationary black hole can emit an expanding shell that results in a spacetime without a singularity or event horizon.
description: 19 pages, 10 figures
QED calculations of energy levels of helium-like ions with $5 \leq Z \leq 30$
Creators: name: Yerokhin, Vladimir A.
name: Patkóš, Vojtěch
name: Pachucki, Krzysztof
Publisher: name: arXiv
Year: 2022
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: A calculation of two-electron QED effects to all orders in the nuclear binding strength parameter $Zα$ is presented for the ground and $n = 2$ excited states of helium-like ions. After subtracting the first terms of the $Zα$ expansion from the all-order results, we identify the higher-order QED effects of order $mα^7$ and higher. Combining the higher-order remainder with the results complete through order $mα^6$ from [V. A. Yerokhin and K. Pachucki, Phys. Rev. A 81, 022507 (2010)], we obtain the most accurate theoretical predictions for the ground and non-mixing $n=2$ states of helium-like ions with $Z = 5-30$. For the mixing $2^1 P_1$ and $2^3 P_1$ states, we extend the previous calculation by evaluating the higher-order mixing correction and show that it defines the uncertainty of theoretical calculations in the $LS$ coupling for $Z > 10$.
A structured description of the genus spectrum of abelian $p$-groups
Creators: name: Müller, Jürgen
name: Sarkar, Siddhartha
Publisher: name: arXiv
Year: 2016
Subjects: subject: Group Theory (math.GR)
subject: Complex Variables (math.CV)
subject: FOS: Mathematics
subject: 20D15, 20H10, 30F35

description: The genus spectrum of a finite group $G$ is the set of all $g$ such that $G$ acts faithfully on a compact Riemann surface of genus $g$. It is an open problem to find a general description of the genus spectrum of the groups in interesting classes, such as the abelian $p$-groups. Motivated by the work of Talu for odd primes $p$, we develop a general combinatorial machinery, for arbitrary primes, to obtain a structured description of the so-called reduced genus spectrum of abelian $p$-groups. We have a particular view towards how to generally find the reduced minimum genus in this class of groups, determine the complete genus spectrum for a large subclass of abelian $p$-groups, consisting of those groups in a certain sense having `large' defining invariants, and use this to construct infinitely many counterexamples to Talu's Conjecture, saying that an abelian $p$-group is recoverable from its genus spectrum. Finally, we indicate the effectiveness of our combinatorial approach by applying it to quite a few explicit examples.
description: 39 pages; this version: added a few more examples, made the title more specific, some cosmetical changes
Brute-Force Mapmaking with Compact Interferometers: A MITEoR Northern Sky Map from 128 MHz to 175 MHz
Creators: name: Zheng, H.
name: Tegmark, M.
name: Dillon, J.
name: Liu, A.
name: Neben, A. R.
name: Tribiano, S.
name: Bradley, R.
name: Buza, V.
name: Ewall-Wice, A.
name: Gharibyan, H.
name: Hickish, J.
name: Kunz, E.
name: Losh, J.
name: Lutomirski, A.
name: Morgan, E.
name: Morrison, S.
name: Narayanan, S.
name: Perko, A.
name: Rosner, D.
name: Sanchez, N.
name: Schutz, K.
name: Valdez, M.
name: Villasenor, J.
name: Yang, H.
name: Zarb-Adami, K.
name: Zelko, I.
name: Zheng, K.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present a new method for interferometric imaging that is ideal for the large fields of view and compact arrays common in 21 cm cosmology. We first demonstrate the method with simulations for two very different low frequency interferometers, the Murchison Widefield Array (MWA) and the MIT Epoch of Reionization (MITEoR) Experiment. We then apply the method to the MITEoR data set collected in July 2013 to obtain the first northern sky map from 128 MHz to 175 MHz at about 2 degree resolution, and find an overall spectral index of -2.73+/-0.11. The success of this imaging method bodes well for upcoming compact redundant low-frequency arrays such as HERA. Both the MITEoR interferometric data and the 150 MHz sky map are publicly available at http://space.mit.edu/home/tegmark/omniscope.html.
description: 15 pages, 7 figures; updated to match MNRAS accepted version
Klinghardt, Matthias: Gesetz und Volk Gottes
Creators: name: Schnabel, Eckhard J.
Publisher: name: Jahrbuch für evangelikale Theologie
Year: 2025

description: 1821196953
description: Jahrbuch für evangelikale Theologie, V. 3 (1989): Jahrbuch für evangelikale Theologie, Band 3
Schneemelcher, Wilhelm (Hrsg.): Neutestamentliche Apokryphen in deutscher Übersetzung
Creators: name: Thiede, Carsten Peter
Publisher: name: Jahrbuch für evangelikale Theologie
Year: 2025

description: 1821196554
description: Jahrbuch für evangelikale Theologie, V. 3 (1989): Jahrbuch für evangelikale Theologie, Band 3
Power-law cross-correlations estimation under heavy tails
Creators: name: Kristoufek, Ladislav
Publisher: name: arXiv
Year: 2016
Subjects: subject: Statistical Finance (q-fin.ST)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Economics and business
subject: FOS: Physical sciences

description: We examine the performance of six estimators of the power-law cross-correlations -- the detrended cross-correlation analysis, the detrending moving-average cross-correlation analysis, the height cross-correlation analysis, the averaged periodogram estimator, the cross-periodogram estimator and the local cross-Whittle estimator -- under heavy-tailed distributions. The selection of estimators allows to separate these into the time and frequency domain estimators. By varying the characteristic exponent of the $α$-stable distributions which controls the tails behavior, we report several interesting findings. First, the frequency domain estimators are practically unaffected by heavy tails bias-wise. Second, the time domain estimators are upward biased for heavy tails but they have lower estimator variance than the other group for short series. Third, specific estimators are more appropriate depending on distributional properties and length of the analyzed series. In addition, we provide a discussion of implications of these results for empirical applications as well as theoretical explanations.
description: 19 pages, 6 figures
Infinitely many solutions to the Yamabe problem on noncompact manifolds
Creators: name: Bettiol, Renato G.
name: Piccione, Paolo
Publisher: name: arXiv
Year: 2016
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 53A30, 53C21, 35J60, 58J55, 58E11, 58E15

description: We establish the existence of infinitely many complete metrics with constant scalar curvature on prescribed conformal classes on certain noncompact product manifolds. These include products of closed manifolds with constant positive scalar curvature and simply-connected symmetric spaces of noncompact or Euclidean type; in particular, $\mathbb S^m \times\mathbb R^d$, $m\geq2$, $d\geq1$, and $\mathbb S^m\times\mathbb H^d$, $2\leq d
description: LaTeX2e, 15 pages, revised version
Effect of configuration mixing on quadrupole and octupole collective states of transitional nuclei
Creators: name: Nomura, Kosuke
Publisher: name: arXiv
Year: 2022
Subjects: subject: Nuclear Theory (nucl-th)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: A model is presented that simultaneously describes shape coexistence and quadrupole and octupole collective excitations within a theoretical framework based on the nuclear density functional theory and the interacting boson model. An optimal interacting-boson Hamiltonian that incorporates the configuration mixing between normal and intruder states, as well as the octupole degrees of freedom, is identified by means of self-consistent mean-field calculations using a universal energy density functional and a pairing interaction, with constraints on the triaxial quadrupole and the axially-symmetric quadrupole and octupole shape degrees of freedom. An illustrative application to the transitional nuclei $^{72}$Ge, $^{74}$Se, $^{74}$Kr, and $^{76}$Kr shows that the inclusion of the intruder states and the configuration mixing significantly lower the energy levels of the excited $0^+$ states, and that the predicted low-lying positive-parity states are characterized by the strong admixture of nearly spherical, weakly deformed oblate, and strongly deformed prolate shapes. The low-lying negative-parity states are shown to be dominated by the deformed intruder configurations.
description: 14 pages, 8 figures, 4 tables
Open String Probe in Soft Hair BTZ
Creators: name: Tai, Chi-Hsien
name: Mondal, Sayid
name: Wen, Wen-Yu
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the boundary CFT under supertranslation in terms of the AdS/CFT correspondence. In particular, we probe the soft hair BTZ background by several open string configurations as follows. The Ryu-Takayanaki formula of holographic entanglement remains intact under supertranslation. The U-shape string probe indicates that the flat part of meson potential is altered by the soft charge. The trailing string solution shows that the hair parameter plays the role of external field in the drag force. The study of hanging string in the Brownian motion suggests the transport variables, such as friction coefficient are likely affected by supertranslation.
description: 8 pages, 2 figures
Possible evolution of the pulsar braking index from larger than three to about one
Creators: name: Tong, H.
name: Kou, F. F.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The coupled evolution of pulsar rotation and inclination angle in the wind braking model is calculated. The oblique pulsar tends to align. The pulsar alignment will affect its spin-down behavior. As a pulsar evolves from the magneto-dipole radiation dominated case to the particle wind dominated case, the braking index will first increase and then decrease. In the early time, the braking index may be larger than 3. And during the following long time, the braking index will be always smaller than 3. The minimum braking index is about one. This can explain the existence of high braking index larger than 3, and low braking index of pulsars simultaneously. The pulsar braking index is expected to evolve from larger than three to about one. A general trend is that the pulsar braking index will evolve from the Crab-like case to the Vela-like case.
description: 7 pages, 4 figures, accepted in ApJ. Significantly rewritten compared with the original version: focusing on the braking index evolution, other materials are now dropped off
Quasi-2D Fermi surface of superconducting line-nodal metal CaSb$_2$
Creators: name: Ikeda, Atsutoshi
name: Saha, Shanta Ranjan
name: Graf, David
name: Saraf, Prathum
name: Sokratov, Danila Sergeevich
name: Hu, Yajian
name: Takahashi, Hidemitsu
name: Yamane, Soichiro
name: Jayaraj, Anooja
name: Sławińska, Jagoda
name: Nardelli, Marco Buongiorno
name: Yonezawa, Shingo
name: Maeno, Yoshiteru
name: Paglione, Johnpierre
Publisher: name: arXiv
Year: 2022
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We report on the Fermi surfaces and superconducting parameters of CaSb$_2$ single crystals (superconducting below $T_{\text{c}}\sim 1.8~\text{K}$) grown by the self-flux method. The frequency of de-Haas-van-Alphen and Shubnikov-de-Haas oscillations evidences a quasi-two-dimensional (quasi-2D) Fermi surface, consistent with one of the Fermi surfaces forming Dirac lines predicted by first-principles calculations. Measurements in the superconducting state reveal that CaSb$_2$ is close to a type-I superconductor with the Ginzburg-Landau (GL) parameter of around unity. The temperature dependence of the upper critical field $H_{\text{c2}}$ is well described by a model considering two superconducting bands, and the enhancement of the effective mass estimated from $H_{\text{c2}}(0~\text{K})$ is consistent with the quasi-2D band observed by the quantum oscillations. Our results indicate that a quasi-2D band forming Dirac lines contributes to the superconductivity in CaSb$_2$.
description: 13 pages, 13 figures
title: Carlos Varjão Rolim
Creators: name: Araujo, Renata
Publisher: name: CHAM, Faculdade de Ciências Sociais e Humanas, Universidade Nova de Lisboa
Year: 2022

description: Entrada biográfica sobre Carlos Varjão Rolim, na plataforma eViterbo
description: Araújo, Renata. 2022.  in eViterbo. CHAM, Faculdade de Ciências Sociais e Humanas, Universidade Nova de Lisboa. eISBN: 978-989-8492-77-7
Observation of orbital two-channel Kondo effect in a ferromagnetic L10-MnGa film
Creators: name: Zhu, L. J.
name: Woltersdorf, G.
name: Zhao, J. H.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The experimental existence and stability of the quantum criticality point of the two-channel Kondo (2CK) effect displaying exotic non-Fermi liquid physics has been buried in persistent confusion despite the intensive theoretical and experimental efforts in past three decades. Here we report an experimental realization of the two-level system scattering-induced orbital 2CK effect in a ferromagnetic L10-MnGa film, which is signified by a magnetic field-independent resistivity upturn that has a logarithmic and square-root temperature dependence beyond and below the Kondo temperature of ~14.5 K, respectively. Our result not only evidences the robust existence of orbital 2CK effect even in the presence of strong magnetic fields and long-range ferromagnetic ordering but also extends the scope of 2CK host materials from nonmagnetic nanoscale point contacts to diffusive conductors of disordered alloys.
Study 2: Dynamic organization of body motion and personality traits in individual settings
Creators: name: Arellano-Véliz, Nicol
Publisher: name: Open Science Framework
Year: 2023

description: This study aims to integrate enactive, embodied and complex systems perspectives to the study of personality. We conducted a laboratory study where participants (N=105) were asked to talk about themselves over three different topics (Introduction, Bodily perception and sensory life, Socioemotional life) for 15 minutes while they were video-recorded. A frame-by-frame differentiation method was performed to extract motion energy time series and subsequently perform Recurrence Quantification Analysis (RQA). Multilevel models were conducted predicting the dynamic organization of body motion, derived from four RQA measures: Determinism, Entropy, Laminarity, and MeanLine.
Baldermann, Ingo und Stemberger, Günter (Hrsg.): Jahrbuch für Biblische Theologie
Creators: name: Bayer, Hans F.
Publisher: name: Jahrbuch für evangelikale Theologie
Year: 2025

description: 1821196120
description: Jahrbuch für evangelikale Theologie, V. 3 (1989): Jahrbuch für evangelikale Theologie, Band 3
Perturbative analysis in higher-spin theories
Creators: name: Didenko, V. E.
name: Misuna, N. G.
name: Vasiliev, M. A.
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: A new scheme of the perturbative analysis of the nonlinear HS equations is developed giving directly the final result for the successive application of the homotopy integrations which appear in the standard approach. It drastically simplifies the analysis and results from the application of the standard spectral sequence approach to the higher-spin covariant derivatives, allowing us in particular to reduce multiple homotopy integrals resulting from the successive application of the homotopy trick to a single integral. Efficiency of the proposed method is illustrated by various examples. In particular, it is shown how the Central on-shell theorem of the free theory immediately results from the nonlinear HS field equations with no intermediate computations.
description: 20 pages, V3: typos corrected, references and acknowledgement added, normalization of AdS background 1-forms changed; version to appear in JHEP
Implications of lepton flavour violation on long baseline neutrino oscillation experiments
Creators: name: Soumya, C
name: Mohanta, R.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Non-standard neutrino interactions (NSIs), the sub-leading effects in the flavour transitions of neutrinos, play a crucial role in the determination of the various unknowns in neutrino oscillations, such as neutrino mass hierarchy, Dirac CP violating phase and the octant of atmospheric mixing angle. In this work, we focus on the possible implications of lepton flavour violating (LFV) NSIs, which generally affect the neutrino propagation, on the determination of the these unknown oscillation parameters. We study the effect of these NSIs on the physics potential of the currently running and upcoming long-baseline experiments, i.e., T2K, NO$ν$A and DUNE. We also check the allowed oscillation parameter space in presence of LFV NSIs.
description: 21 pages, 10 figures, version to appear in Phys. Rev. D
Zero-point lattice expansion and band gap renormalization: Grüneisen approach versus free energy minimization
Creators: name: Brousseau-Couture, Véronique
name: Godbout, Émile
name: Gonze, Xavier
name: Côté, Michel
Publisher: name: arXiv
Year: 2022
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The zero-point lattice expansion (ZPLE) is a small variation of the lattice parameters induced by the presence of phonons in a material compared to the static lattice picture. It contributes significantly to the zero-point renormalization (ZPR) of the band gap energy, but its consequences have not been investigated as thoroughly as those stemming from electron-phonon interactions. In the usual first-principles approach, one evaluates the ZPLE by minimizing the $T=0$ K Helmholtz free energy. In this work, we show that the formalism based on the Grüneisen parameters, which commonly neglects zero-point effects, can be efficiently used to compute ZPLE for both isotropic and anisotropic materials at much lower computational cost. We systematically test this formalism on 22 cubic and wurtzite materials and obtain excellent agreement with free energy minimization results for both the ZPLE and the resulting band gap ZPR. We use our results to validate an empirical expression estimating the ZPLE-induced ZPR and unveil its sensitivity to the temperature range involved in estimating the ZPLE from experimental data. Our findings finally reveal that the ZPLE contribution to the band gap ZPR can reach 20% to more than 80% of the electron-phonon interaction contribution for heavier or more ionic materials, including materials containing light atoms. Considering both contributions on an equal footing is thus essential should one attempt to compare theoretical ZPR results with experimental data.
description: 30 pages, 5 figures, 14 tables. Sec. II D expanded for internal consistency, typo corrected in Fig.4., clarified Tables captions, minor corrections to the text; results and conclusions unchanged
On Optimum Enumerative Sphere Shaping Blocklength at Different Symbol Rates for the Nonlinear Fiber Channel
Creators: name: Gültekin, Yunus Can
name: Vassilieva, Olga
name: Kim, Inwoong
name: Palacharla, Paparao
name: Okonkwo, Chigo
name: Alvarado, Alex
Publisher: name: arXiv
Year: 2022
Subjects: subject: Information Theory (cs.IT)
subject: Signal Processing (eess.SP)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: We show that a 0.9 dB SNR improvement can be obtained via short-blocklength enumerative sphere shaping for single-span transmission at 56 GBd. This gain vanishes for higher symbol rates and a larger number of spans.
description: 3 pages, 3 figures, presented at the OECC/PSC 2022
A Precessing Ferromagnetic Needle Magnetometer
Creators: name: Kimball, Derek F. Jackson
name: Sushkov, Alexander O.
name: Budker, Dmitry
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: A ferromagnetic needle is predicted to precess about the magnetic field axis at a Larmor frequency $Ω$ under conditions where its intrinsic spin dominates over its rotational angular momentum, $N\hbar \gg IΩ$ ($I$ is the moment of inertia of the needle about the precession axis and $N$ is the number of polarized spins in the needle). In this regime the needle behaves as a gyroscope with spin $N\hbar$ maintained along the easy axis of the needle by the crystalline and shape anisotropy. A precessing ferromagnetic needle is a correlated system of $N$ spins which can be used to measure magnetic fields for long times. In principle, by taking advantage of rapid averaging of quantum uncertainty, the sensitivity of a precessing needle magnetometer can far surpass that of magnetometers based on spin precession of atoms in the gas phase. Under conditions where noise from coupling to the environment is subdominant, the scaling with measurement time $t$ of the quantum- and detection-limited magnetometric sensitivity is $t^{-3/2}$. The phenomenon of ferromagnetic needle precession may be of particular interest for precision measurements testing fundamental physics.
description: Main text: 6 pages, 2 figures; Supplementary material: 3 pages, 1 figure
Structural analysis of high-dimensional basins of attraction
Creators: name: Martiniani, Stefano
name: Schrenk, K. Julian
name: Stevenson, Jacob D.
name: Wales, David J.
name: Frenkel, Daan
Publisher: name: arXiv
Year: 2016
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: We propose an efficient Monte Carlo method for the computation of the volumes of high-dimensional bodies with arbitrary shape. We start with a region of known volume within the interior of the manifold and then use the multistate Bennett acceptance-ratio method to compute the dimensionless free-energy difference between a series of equilibrium simulations performed within this object. The method produces results that are in excellent agreement with thermodynamic integration, as well as a direct estimate of the associated statistical uncertainties. The histogram method also allows us to directly obtain an estimate of the interior radial probability density profile, thus yielding useful insight into the structural properties of such a high-dimensional body. We illustrate the method by analyzing the effect of structural disorder on the basins of attraction of mechanically stable packings of soft repulsive spheres.
description: 5 pages, 2 figures, supplemental material
Relativistic Bethe logarithm for triplet states of helium-like ions
Creators: name: Yerokhin, Vladimir A.
name: Patkóš, Vojtěch
name: Pachucki, Krzysztof
Publisher: name: arXiv
Year: 2022
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We report a calculation of relativistic corrections of order $mα^7$ to the Bethe logarithm for the $2^3S$ and $2^3P$ states of helium-like ions. The calculation is required for improving the accuracy of theoretical energies of helium-like ions and for checking the evaluation of the $mα^7$ effects in helium performed in [V. Patkóš, V. A. Yerokhin, K. Pachucki, Phys. Rev. A 103, 042809 (2021)], where a significant discrepancy with experimental results was found. The large-$Z$ limit of the relativistic Bethe logarithm is determined numerically, in excellent agreement with the analytical results obtained from the hydrogen theory.
On skew tau-functions in higher spin theory
Creators: name: Melnikov, D.
name: Mironov, A.
name: Morozov, A.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Recent studies of higher spin theory in three dimensions concentrate on Wilson loops in Chern-Simons theory, which in the classical limit reduce to peculiar corner matrix elements between the highest and lowest weight states in a given representation of SL(N). Despite these "skew" tau-functions can seem very different from conventional ones, which are the matrix elements between the two highest weight states, they also satisfy the Toda recursion between different fundamental representations. Moreover, in the most popular examples they possess simple representations in terms of matrix models and Schur functions. We provide a brief introduction to this new interesting field, which, after quantization, can serve as an additional bridge between knot and integrability theories.
description: 36 pages
Path integral molecular dynamics for thermodynamics and Green's function of ultracold spinor bosons
Creators: name: Yongle, Yu
name: Shujuan, Liu
name: Hongwei, Xiong
name: Yunuo, Xiong
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Computational Physics (physics.comp-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Most recently, the path integral molecular dynamics has been successfully used to consider the thermodynamics of single-component identical bosons and fermions. In this work, the path integral molecular dynamics is developed to simulate the thermodynamics, Green's function and momentum distribution of two-component bosons in three dimensions. As an example of our general method, we consider the thermodynamics of up to sixteen bosons in a three-dimensional harmonic trap. For noninteracting spinor bosons, our simulation shows a bump in the heat capacity. As the repulsive interaction strength increases, however, we find the gradual disappearance of the bump in the heat capacity. We believe this simulation result can be tested by ultracold spinor bosons with optical lattices and magnetic-field Feshbach resonance to tune the inter-particle interaction. We also calculate Green's function and momentum distribution of spinor bosons. Our work facilitates the exact numerical simulation of spinor bosons, whose property is one of the major problems in ultracold Bose gases.
description: 20 pages, 8 figures, Accepted by The Journal of Chemical Physics
Inflation and Acceleration of the Universe by Nonlinear Magnetic Monopole Fields
Creators: name: Övgün, A.
Publisher: name: arXiv
Year: 2016
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Despite impressive phenomenological successes, cosmological models are incomplete without an understanding of what happened at the big bang singularity. Maxwell electrodynamics, considered as a source of the classical Einstein field equations, leads to the singular isotropic Friedmann solutions. In the context of Friedmann-Robertson-Walker (FRW) spacetime, we show that singular behavior does not occur for a class of nonlinear generalizations of the electromagnetic theory for strong fields. A new mathematical model is proposed for which the analytical nonsingular extension of FRW solutions is obtained by using the nonlinear magnetic monopole fields.
description: two column, 6 pages, 2 figures, final published version