cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Low-amplitude rotational modulation rather than pulsations in the CoRoT B-type supergiant HD 46769
Creators: name: Aerts, C.
name: Simon-Diaz, S.
name: Catala, C.
name: Neiner, C.
name: Briquet, M.
name: Castro, N.
name: Schmid, V. S.
name: Scardia, M.
name: Rainer, M.
name: Poretti, E.
name: Papics, I.
name: Degroote, P.
name: Bloemen, S.
name: Oestensen, R. H.
name: Auvergne, M.
name: Baglin, A.
name: Baudin, F.
name: Michel, E.
name: Samadi, R.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: {We aim to detect and interpret photometric and spectroscopic variability of the bright CoRoT B-type supergiant target HD\,46769 ($V=5.79$). We also attempt to detect a magnetic field in the target.} {We analyse a 23-day oversampled CoRoT light curve after detrending, as well as spectroscopic follow-up data, by using standard Fourier analysis and Phase Dispersion Minimization methods. We determine the fundamental parameters of the star, as well as its abundances from the most prominent spectral lines. We perform a Monte Carlo analysis of spectropolarimetric data to obtain an upper limit of the polar magnetic field, assumping a dipole field.} {In the CoRoT data, we detect a dominant period of 4.84\,d with an amplitude of 87\,ppm, and some of its (sub-)multiples. Given the shape of the phase-folded light curve and the absence of binary motion, we interpret the dominant variability in terms of rotational modulation, with a rotation period of 9.69\,d. Subtraction of the rotational modulation signal does not reveal any sign of pulsations. Our results are consistent with the absence of variability in the Hipparcos light curve. The spectroscopy leads to a projected rotational velocity of 72$\pm 2$\,km\,s$^{-1}$ and does not reveal periodic variability nor the need to invoke macroturbulent line broadening. No signature of a magnetic field is detected in our data. A field stronger than $\sim 500$\,G at the poles can be excluded, unless the possible non-detected field were more complex than dipolar.} {The absence of pulsations and of macroturbulence of this evolved B-type supergiant is placed into context of instability computations and of observed variability of evolved B-type stars.}
description: 9 pages, 4 tables, 8 figures, accepted for publication in A&A
Universality of Descendent Integrals over Moduli Spaces of Stable Sheaves on $K3$ Surfaces
Creators: name: Oberdieck, Georg
Publisher: name: arXiv
Year: 2022
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics

description: We interprete results of Markman on monodromy operators as a universality statement for descendent integrals over moduli spaces of stable sheaves on $K3$ surfaces. This yields effective methods to reduce these descendent integrals to integrals over the punctual Hilbert scheme of the $K3$ surface. As an application we establish the higher rank Segre-Verlinde correspondence for $K3$ surfaces as conjectured by Göttsche and Kool.
Spherically symmetric cosmological spacetimes with dust and radiation - numerical implementation
Creators: name: Lim, Woei Chet
name: Regis, Marco
name: Clarkson, Chris
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We present new numerical cosmological solutions of the Einstein Field Equations. The spacetime is spherically symmetric with a source of dust and radiation approximated as a perfect fluid. The dust and radiation are necessarily non-comoving due to the inhomogeneity of the spacetime. Such a model can be used to investigate non-linear general relativistic effects present during decoupling or big-bang nucleosynthesis, as well as for investigating void models of dark energy with isocurvature degrees of freedom. We describe the full evolution of the spacetime as well as the redshift and luminosity distance for a central observer. After demonstrating accuracy of the code, we consider a few example models, and demonstrate the sensitivity of the late time model to the degree of inhomogeneity of the initial radiation contrast.
description: 12 pages, 5 figures. v2: minor changes, matches published version
Universality of Phase Transition Dynamics: Topological Defects from Symmetry Breaking
Creators: name: del Campo, Adolfo
name: Zurek, Wojciech H.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: High Energy Physics - Theory (hep-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In the course of a non-equilibrium continuous phase transition, the dynamics ceases to be adiabatic in the vicinity of the critical point as a result of the critical slowing down (the divergence of the relaxation time in the neighborhood of the critical point). This enforces a local choice of the broken symmetry and can lead to the formation of topological defects. The Kibble-Zurek mechanism (KZM) was developed to describe the associated nonequilibrium dynamics and to estimate the density of defects as a function of the quench rate through the transition. During recent years, several new experiments investigating formation of defects in phase transitions induced by a quench both in classical and quantum mechanical systems were carried out. At the same time, some established results were called into question. We review and analyze the Kibble-Zurek mechanism focusing in particular on this surge of activity, and suggest possible directions for further progress.
description: 57 pages, 16 figures. Minor changes, typos corrected
A stable and causal model of magnetohydrodynamics
Creators: name: Armas, Jay
name: Camilloni, Filippo
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We formulate the theory of first-order dissipative magnetohydrodynamics in an arbitrary hydrodynamic frame under the assumption of parity-invariance and discrete charge symmetry. We study the mode spectrum of Alfvén and magnetosonic waves as well as the spectrum of gapped excitations and derive constraints on the transport coefficients such that generic equilibrium states with constant magnetic fields are stable and causal under linearised perturbations. We solve these constraints for a specific equation of state and show that there exists a large family of hydrodynamic frames that renders the linear fluctuations stable and causal. This theory does not require introducing new dynamical degrees of freedom and therefore is a promising and simpler alternative to Müller-Israel-Stewart-type theories. Together with a detailed analysis of transport, entropy production and Kubo formulae, the theory presented here is well suited for studying dissipative effects in various contexts ranging from heavy-ion collisions to astrophysics.
description: v2:33pp, added clarifications, matches version to be published in JCAP
3D Fermi surfaces from charge order in layered CsV$_3$Sb$_5$
Creators: name: Huang, Xiangwei
name: Guo, Chunyu
name: Putzke, Carsten
name: Sun, Yan
name: Vergniory, Maia G.
name: Errea, Ion
name: Gutierrez-Amigo, Martin
name: Chen, Dong
name: Felser, Claudia
name: Moll, Philip J. W.
Publisher: name: arXiv
Year: 2022
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: The cascade of electronic phases in CsV$_3$Sb$_5$ raises the prospect to disentangle their mutual interactions in a clean, strongly interacting Kagome lattice. When the Kagome planes are stacked into a crystal, its electronic dimensionality encodes how much of the Kagome physics and its topological aspects survive. The layered structure of CsV$_3$Sb$_5$ reflects in Brillouin-zone-sized quasi-2D Fermi surfaces and a significant transport anisotropy. Yet here we demonstrate that CsV$_3$Sb$_5$ is a three-dimensional metal within the charge-density-wave (CDW) state. Small 3D pockets play a crucial role in its low-temperature magneto- and quantum transport. Their emergence at $T_{CDW}\sim 93$ K results in an anomalous sudden increase of the in-plane magnetoresistance by 4 orders of magnitude. The presence of these 3D pockets is further confirmed by quantum oscillations under in-plane magnetic fields - demonstrating their closed nature. These results emphasize the impact of interlayer coupling on the Kagome physics in 3D materials.
Elliptic flow of heavy-flavour decay electrons in Pb-Pb collision at $\sqrt{s_\mathrm{NN}}$ = 2.76 TeV with ALICE
Creators: name: Dubla, Andrea
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: We present the elliptic flow $v_{2}$ of electrons from the semi-leptonic decays of heavy-flavour hadrons at mid-rapidity for semi-central ($20-40%$ centrality) Pb-Pb collisions at $\sqrt{s_\mathrm{NN}}$ = 2.76 TeV measured with the ALICE detector. A positive $v_{2}$ is observed at low $p_\mathrm{T}$ in semi-central collisions. Comparisons with previous measurements obtained at lower collision energy at RHIC in Au-Au collisions at $\sqrt{s_\mathrm{NN}}$ = 0.2 TeV and with theoretical models are also presented.
description: 3 pages, 4 figures
A type theory for synthetic $\infty$-categories
Creators: name: Riehl, Emily
name: Shulman, Michael
Publisher: name: arXiv
Year: 2017
Subjects: subject: Category Theory (math.CT)
subject: Logic (math.LO)
subject: FOS: Mathematics
subject: 03G30, 18G55, 55U40

description: We propose foundations for a synthetic theory of $(\infty,1)$-categories within homotopy type theory. We axiomatize a directed interval type, then define higher simplices from it and use them to probe the internal categorical structures of arbitrary types. We define Segal types, in which binary composites exist uniquely up to homotopy; this automatically ensures composition is coherently associative and unital at all dimensions. We define Rezk types, in which the categorical isomorphisms are additionally equivalent to the type-theoretic identities - a "local univalence" condition. And we define covariant fibrations, which are type families varying functorially over a Segal type, and prove a "dependent Yoneda lemma" that can be viewed as a directed form of the usual elimination rule for identity types. We conclude by studying homotopically correct adjunctions between Segal types, and showing that for a functor between Rezk types to have an adjoint is a mere proposition. To make the bookkeeping in such proofs manageable, we use a three-layered type theory with shapes, whose contexts are extended by polytopes within directed cubes, which can be abstracted over using "extension types" that generalize the path-types of cubical type theory. In an appendix, we describe the motivating semantics in the Reedy model structure on bisimplicial sets, in which our Segal and Rezk types correspond to Segal spaces and complete Segal spaces.
description: v2 has minor updates inspired by the 2017 Homotopy Type Theory MRC; v3 has improvements suggested by the referee; v4 is the final journal version with a more precise syntax for our type theory with shapes; v5 adds a paragraph at the end of section 2.1, fixes a typo in the statement of 4.1, and corrects the proof of 8.13, preserving the numberings of the published version
Cosmological Constraints from Fourier Phase Statistics
Creators: name: Ali, Kamran
name: Obreschkow, Danail
name: Howlett, Cullan
name: Bonvin, Camille
name: Llinares, Claudio
name: Franco, Felipe Oliveira
name: Power, Chris
Publisher: name: arXiv
Year: 2018
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Most statistical inference from cosmic large-scale structure relies on two-point statistics, i.e.\ on the galaxy-galaxy correlation function (2PCF) or the power spectrum. These statistics capture the full information encoded in the Fourier amplitudes of the galaxy density field but do not describe the Fourier phases of the field. Here, we quantify the information contained in the line correlation function (LCF), a three-point Fourier phase correlation function. Using cosmological simulations, we estimate the Fisher information (at redshift $z=0$) of the 2PCF, LCF and their combination, regarding the cosmological parameters of the standard $Λ$CDM model, as well as a Warm Dark Matter (WDM) model and the $f(R)$ and Symmetron modified gravity models. The galaxy bias is accounted for at the level of a linear bias. The relative information of the 2PCF and the LCF depends on the survey volume, sampling density (shot noise) and the bias uncertainty. For a volume of $1h^{-3}\rm Gpc^3$, sampled with points of mean density $\bar{n} = 2\times10^{-3} h^{3}\ \rm Mpc^{-3}$ and a bias uncertainty of 13\%, the LCF improves the parameter constraints by about 20\% in the $Λ$CDM cosmology and potentially even more in alternative models. Finally, since a linear bias only affects the Fourier amplitudes (2PCF), but not the phases (LCF), the combination of the 2PCF and the LCF can be used to break the degeneracy between the linear bias and $σ_8$, present in 2-point statistics.
description: Accepted for Publication in MNRAS. 12 pages, 7 figures
Callosciurus melanogaster
Creators: name: Hoffmann, Robert S.
name: Anderson, Charles G.
Publisher: name: Zenodo
Year: 1993
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Rodentia
Sciuridae
Callosciurus
Callosciurus melanogaster

description: Callosciurus melanogaster (Thomas, 1895). Ann. Mus. Civ. Stor. Nat. Genova, 14:668. TYPE LOCALITY: Indonesia, Mentawi Isis, Sipora Isl, "Si Oban". DISTRIBUTION: Mentawi Isis (Indonesia). SYNONYMS: atratus (Miller, 1903); mentawi (Chasen and Kloss, 1927). COMMENTS: Member of the notatus species group. Part of the rodent fauna endemic to the Mentawi Archipelago (see comments under Leopoldamys siporanus).
description: Published as part of Robert S. Hoffmann & Charles G. Anderson, 1993, Order Rodentia - Family Sciuridae, pp. 419-465 in Mammal Species of the World (2 nd Edition), Washington and London :Smithsonian Institution Press on page 422, DOI: 10.5281/zenodo.7353130
description: {"references": ["Chasen, F. N., and C. B. Kloss. 1927. Spolia Mentawiensia- - mammals. Proceedings of the Zoological Society of London, 1927: 797 - 840."]}
COFFE: a code for the full-sky relativistic galaxy correlation function
Creators: name: Tansella, Vittorio
name: Jelic-Cizmek, Goran
name: Bonvin, Camille
name: Durrer, Ruth
Publisher: name: arXiv
Year: 2018
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present a public version of the code COFFE (COrrelation Function Full-sky Estimator) available at https://github.com/JCGoran/coffe. The code computes the galaxy two-point correlation function and its multipoles in linear perturbation theory, including all relativistic and wide angle corrections. COFFE also calculates the covariance matrix for two physically relevant estimators of the correlation function multipoles. We illustrate the usefulness of our code by a simple but relevant example: a forecast of the detectability of the lensing signal in the multipoles of the two-point function. In particular, we show that lensing should be detectable in the multipoles of the two-point function, with a signal-to-noise larger than 10, in future surveys like Euclid or the SKA.
description: Code available at https://github.com/JCGoran/coffe
Full vs. no information best choice game with finite horizon
Creators: name: Skarupski, Marek
name: Szajowski, Krzysztof
Publisher: name: arXiv
Year: 2018
Subjects: subject: Optimization and Control (math.OC)
subject: Computer Science and Game Theory (cs.GT)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences
subject: G.1.6
subject: 90D15, 93C30

description: Let us consider two companies A and B. Both of them are interested in buying a set of some goods. The company A is a big corporation and it knows the actual value of the good on the market and is able to observe the previous values of them. The company B has no information about the actual value of the good but it can compare the actual position of the good on the market with the previous position of the good offered. Both of the players want to choose the very best object overall. The recall is not allowed. The number of the objects is fixed and finite. One can think about these two types of buyers a business customer vs. an individual customer. The mathematical model of the competition between them is presented and the solution is defined and constructed.
description: Submitted to: Stochastic Operations Research in Business and Industry (eds. by Tadashi Dohi, Katsunori Ano and Shoji Kasahara), World Scientific Publisher
Callosciurus nigrovittatus
Creators: name: Hoffmann, Robert S.
name: Anderson, Charles G.
Publisher: name: Zenodo
Year: 1993
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Rodentia
Sciuridae
Callosciurus
Callosciurus nigrovittatus

description: Callosciurus nigrovittatus (Horsfield, 1824). Zool. Res. Java, 7:149. TYPE LOCALITY: Indonesia, "The island of Java." Restricted by Robinson and Kloss (1918«:222) to " Java (probably East and central parts)." DISTRIBUTION: S Vietnam, Malaysia, peninsular Thailand, Sumatra, Borneo, Java, adjacent small islands. SYNONYMS: acraeus Miller, 1942; bantamensis Sody, 1949; besuki (Kloss, 1921); bilimitatus (Miller, 1903); bocki (Robinson and Wroughton, 1911); johorensis (Robinson and Wroughton, 1911); klossi (Miller, 1900); madsoedi Sody, 1929; microrhynchus (Kloss, 1908); phoenicurus Sody, 1949; salakensis Sody, 1949; tengerensis Sody, 1949. COMMENTS: Member of the notatus species group.
description: Published as part of Robert S. Hoffmann & Charles G. Anderson, 1993, Order Rodentia - Family Sciuridae, pp. 419-465 in Mammal Species of the World (2 nd Edition), Washington and London :Smithsonian Institution Press on page 422, DOI: 10.5281/zenodo.7353130
description: {"references": ["Miller, G. S., Jr. 1942. Zoological results of the George Vanderbilt Sumatran Expedition, 1936 - 1939. Part V. Mammals collected by Frederick A. Ulmer, Jr. on Sumatra and Nias. Proceedings of the Academy of Natural Sciences of Philadelphia, 94: 107 - 165.", "Kloss, C. B. 1921. Some rats and mice of the Malay Archipelago. Treubia, 2: 115 - 124."]}
MALTS: Matching After Learning to Stretch
Creators: name: Parikh, Harsh
name: Rudin, Cynthia
name: Volfovsky, Alexander
Publisher: name: arXiv
Year: 2018
Subjects: subject: Methodology (stat.ME)
subject: Machine Learning (cs.LG)
subject: Econometrics (econ.EM)
subject: FOS: Computer and information sciences
subject: FOS: Economics and business

description: We introduce a flexible framework that produces high-quality almost-exact matches for causal inference. Most prior work in matching uses ad-hoc distance metrics, often leading to poor quality matches, particularly when there are irrelevant covariates. In this work, we learn an interpretable distance metric for matching, which leads to substantially higher quality matches. The learned distance metric stretches the covariate space according to each covariate's contribution to outcome prediction: this stretching means that mismatches on important covariates carry a larger penalty than mismatches on irrelevant covariates. Our ability to learn flexible distance metrics leads to matches that are interpretable and useful for the estimation of conditional average treatment effects.
description: 40 pages, 5 Tables, 12 Figures
A scan of f(R) models admitting Rindler type acceleration
Creators: name: Mazharimousavi, S. Habib
name: Kerachian, M.
name: Halilsoy, M.
Publisher: name: arXiv
Year: 2013
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: As a manifestation of large distance effect Grumiller modified Schwarzschild metric with an extraneous term reminiscent of Rindler acceleration. Such a term has the potential to explain the observed flat rotation curves in general relativity. The same idea has been extended herein to the larger arena of $f\left( R\right) $ theory. With particular emphasis on weak energy conditions (WECs) for a fluid we present various classes of $f\left( R\right) $ theories admitting a Rindler-type acceleration in the metric.
description: 7 pages, 12 figures, major revision, new references are added
Full-sky weak lensing: a nonlinear post-Friedmann treatment
Creators: name: Gressel, Hedda A.
name: Bonvin, Camille
name: Bruni, Marco
name: Bacon, David
Publisher: name: arXiv
Year: 2019
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We present a full-sky derivation of weak lensing observables in the Post-Friedmann (PF) formalism. Weak lensing has the characteristic of mixing small scales and large scales since it is affected by inhomogeneities integrated along the photon trajectory. With the PF formalism, we develop a modelling of lensing observables which encompasses both leading order relativistic effects and effects that are due to the fully non-linear matter distribution at small scales. We derive the reduced shear, convergence and rotation up to order $1/c^4$ in the PF approximation, accounting for scalar, vector and tensor perturbations, as well as galaxies' peculiar velocities. We discuss the various contributions that break the Kaiser-Squires relation between the shear and the convergence at different orders. We pay particular attention to the impact of the frame-dragging vector potential on lensing observables and we discuss potential ways to measure this effect in future lensing surveys.
description: 59 pages
Block entropy for Kitaev-type spin chains in a transverse field
Creators: name: Subrahmanyam, V.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Block entanglement entropy in the ground state of a quantum spin chain is investigated. The spins have Kitaev-type nearest-neighbor interaction, of strength J_x or J_y, through either x or y components of the spins on alternating bonds, along with a transverse magnetic field h. An exact solution is obtained through Jordan-Wigner fermionization, and it exhibits a macroscopically degenerate ground state for h=0, and a non-degenerate ground state for nonzero h and for all interaction strengths. For a chain of N spins, we study the block entropy of a partition of L contiguous spins. The block entanglement entropy needs the eigenvalues of the 2^L-dimensional reduced density matrix. We employ an efficient method that reduces this problem to evaluating eigenvalues of a L-dimensional matrix, which enables us to calculate easily the block entanglement for large-N chains numerically. The entanglement entropy grows as log L, at the degeneracy point h=0, and only for J_x=J_y. For nonzero magnetic field, the entropy becomes independent of the size, thus obeying the area law. For unequal J_x and J_y, the block entropy shows a non-monotonic behavior for L
description: 5 pages, 2 figures
Active nematic gel with quenched disorder
Creators: name: Kumar, Sameer
name: Mishra, Shradha
Publisher: name: arXiv
Year: 2022
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: With quenched disorder, we introduce two-dimensional active nematics suspended in an incompressible fluid. We write the coarse-grained hydrodynamic equations of motion for slow variables, viz. density, orientation and flow fields. The quenched disorder is introduced such that it interacts with the local orientation at every point with some strength. Disorder strength is tuned from zero to large values. We numerically study the defect dynamics and system's kinetics and find that the finite disorder slows the ordering. The presence of fluid induces large fluctuation in the orientation field, further disturbing the ordering. The large fluctuation in the orientation field due to the fluid is so dominant that it reduces the effect of the quenched disorder. We have also found that the disorder's effect is almost the same for both the contractile and extensile nature of active stresses in the system. This study can help {\color{black} to} understand the impact of quenched {\color{black} disorder} on the ordering kinetics of active gels with nematic interaction among the constituent objects.
description: 14 figures
On the $1/H$-flow by $p$-Laplace approximation: new estimates via fake distances under Ricci lower bounds
Creators: name: Mari, Luciano
name: Rigoli, Marco
name: Setti, Alberto Giulio
Publisher: name: arXiv
Year: 2019
Subjects: subject: Differential Geometry (math.DG)
subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: In this paper we show the existence of weak solutions $w : M \rightarrow \mathbb{R}$ of the inverse mean curvature flow starting from a relatively compact set (possibly, a point) on a large class of manifolds satisfying Ricci lower bounds. Under natural assumptions, we obtain sharp estimates for the growth of $w$ and for the mean curvature of its level sets, that are well behaved with respect to Gromov-Hausdorff convergence. The construction follows R. Moser's approximation procedure via the $p$-Laplace equation, and relies on new gradient and decay estimates for $p$-harmonic capacity potentials, notably for the kernel $\mathcal{G}_p$ of $Δ_p$. These bounds, stable as $p \rightarrow 1$, are achieved by studying fake distances associated to capacity potentials and Green kernels. We conclude by investigating some basic isoperimetric properties of the level sets of $w$.
description: 62 pages, new version. We correct a mistake in our proof of Lemma 2.17. Although we have to strengthen the assumptions therein and, accordingly, in Theorem 2.22, all of our results on the existence and properties of the IMCF are not affected. Minor changes, with no influence elsewhere in the paper, regard Lemma 3.3, Proposition 4.3 and Lemma 5.3
Direct constraint on the Higgs-charm coupling from a search for Higgs boson decays into charm quarks with the ATLAS detector
Creators: name: ATLAS Collaboration
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: A search for the Higgs boson decaying into a pair of charm quarks is presented. The analysis uses proton-proton collisions to target the production of a Higgs boson in association with a leptonically decaying $W$ or $Z$ boson. The dataset delivered by the LHC at a centre-of-mass energy of $\sqrt{s}=13$ TeV and recorded by the ATLAS detector corresponds to an integrated luminosity of 139 fb$^{-1}$. Flavour-tagging algorithms are used to identify jets originating from the hadronisation of charm quarks. The analysis method is validated with the simultaneous measurement of $WW,WZ$ and $ZZ$ production, with observed (expected) significances of $2.6$ ($2.2$) standard deviations above the background-only prediction for the $(W/Z)Z(\to c\bar{c})$ process and $3.8$ ($4.6$) standard deviations for the $(W/Z)W(\to cq)$ process. The $(W/Z)H(\to c \bar{c})$ search yields an observed (expected) upper limit of $26$ ($31$) times the predicted Standard Model cross-section times branching fraction for a Higgs boson with a mass of 125 GeV, corresponding to an observed (expected) constraint on the charm Yukawa coupling modifier $|κ_c| < 8.5 (12.4)$, at the 95% confidence level. A combination with the ATLAS $(W/Z)H, H\to b\bar{b}$ analysis is performed, allowing the ratio $κ_c / κ_b$ to be constrained to less than 4.5 at the 95% confidence level, smaller than the ratio of the $b$- and $c$-quark masses, and therefore determines the Higgs-charm coupling to be weaker than the Higgs-bottom coupling at the 95% confidence level.
description: 58 pages in total, author list starting page 43, 17 figures, 5 tables, published in EPJC. All figures including auxiliary figures are available at http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/HIGG-2021-12
title: Analyzing Driver Behavior and Traffic Flow Breakdowns at the Hampton Roads Bridge Tunnel
Creators: name: Allen, Michelle L.
Publisher: name: Old Dominion University Libraries
Year: 2015

description: The Hampton Roads Bridge Tunnel (HRBT) is a major link for activity in Hampton Roads. The eastbound direction also suffers from congestion during both morning and peak hours. During these periods of congestion, the flow rate varies in regards to the location of the congestion. This study focuses on investigating driver behavior during these different conditions and briefly investigates the cost of delay due to the different capacities. To accomplish this, per vehicle record data (PVR) is used. This data, collected at the exit of the tunnel, provides information on arrival time, speed, lane location, vehicle class, and time headway. Using this data allows an in-depth look at the differences between the two lanes and considers whether heavy goods vehicles (HGV) have a significant impact on the flow. Taking the inverse of the average headway in the study times to obtain flow shows that, in Lane 2, the flow when congestion is prior to the tunnel entrance is 19% higher than when the congestion is within the tunnel itself. In Lane 1, the difference is 16%. Over the study period, the percentage of HGV was lower during the morning peak when congestion was outside the tunnel.

This report concluded that it is not the presence of HGV that results in the location change of congestion and the resulting drop in flow rate. This thesis also determined that there is a difference of around 12,000 vehicle hours of delay, producing a delay cost increase of $375,000 annually. Further study into the feasibility of Active Traffic Management {ATM) applications could identify methods to control the location of the congestion and prevent congestion from occurring within the tunnel. This would increase the queue discharge flow rate and overall capacity.
On Some Algebraic Properties of Block Toeplitz Matrices with Commuting Entries
Creators: name: Khan, Muhammad Ahsan
name: Yagoub, Ameur
Publisher: name: arXiv
Year: 2022
Subjects: subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: 5A27, 15A30, 15B05

description: Toeplitz matrices are ubiquitous and play important roles across many areas of mathematics. In this paper, we present some algebraic results concerning block Toeplitz matrices with block entries belonging to a commutative algebra $Å$. The characterization of normal block Toeplitz matrices with entries from $Å$ is also obtained.
Callosciurus orestes
Creators: name: Hoffmann, Robert S.
name: Anderson, Charles G.
Publisher: name: Zenodo
Year: 1993
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Rodentia
Sciuridae
Callosciurus
Callosciurus orestes

description: Callosciurus orestes (Thomas, 1895). Ann. Mag. Nat. Hist., ser. 6, 15:529. TYPE LOCALITY: Malaysia, Sarawak, Mount Dulit, 4000 ft. DISTRIBUTION: Sabah and Sarawak [Borneo], Malaysia, at middle elevations (Payne et al., 1985). SYNONYMS: canalvus Moore, 1959; venetus (Chasen, 1940). COMMENTS: Formerly considered a subspecies of C. nigrovittatus (e.g., Medway, 1977:92), but clearly distinct (Payne et al., 1985). Includes Glyphotes canalvus, which Moore (1959) placed in subgenus Hessonoglyphotes. Member of the notatus species group, closely related to adamsi (see comments therein).
description: Published as part of Robert S. Hoffmann & Charles G. Anderson, 1993, Order Rodentia - Family Sciuridae, pp. 419-465 in Mammal Species of the World (2 nd Edition), Washington and London :Smithsonian Institution Press on page 423, DOI: 10.5281/zenodo.7353130
description: {"references": ["Payne, J., C. M. Francis, and K. Phillipps. 1985. A field guide to the mammals of Borneo. The Sabah Society, Kuala Lumpur, 332 pp.", "Moore, J. C. 1959. Relationships among the living squirrels of the Sciurinae. Bulletin of the American Museum of Natural History, 118 (4): 157 - 206.", "Chasen, F. N. 1940. A handlist of Malaysian mammals: A systematic list of the mammals of the Malay Peninsula, Sumatra, Borneo, and Java, including the adjacent small islands. Bulletin of the Raffles Museum, Singapore, 15: 1 - 209.", "Medway, L. 1977. Mammals of Borneo: Field keys and an annotated checklist. Second ed. Monograph, Malay Branch of the Royal Asiatic Society, 7: 1 - 172."]}
Refinement invariance of intersection (co)homologies
Creators: name: Saralegi-Aranguren, Martin
Publisher: name: arXiv
Year: 2019
Subjects: subject: Algebraic Topology (math.AT)
subject: FOS: Mathematics
subject: 55N33 (primary), 57N80 (secondary)

description: We study the refinement invariance of several intersection (co)homologies existing in the literature. These (co)homologies have been introduced in order to establish the Poincaré Duality in variousl contexts. We found the classical topological invariance of the intersection homology and also various refinement invariance results already proved.
description: Huypothesis about emebedded strata has been deleted. In othe words, condition (S6) has been weakened
Quantum Simulation
Creators: name: Georgescu, I. M.
name: Ashhab, S.
name: Nori, Franco
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: Simulating quantum mechanics is known to be a difficult computational problem, especially when dealing with large systems. However, this difficulty may be overcome by using some controllable quantum system to study another less controllable or accessible quantum system, i.e., quantum simulation. Quantum simulation promises to have applications in the study of many problems in, e.g., condensed-matter physics, high-energy physics, atomic physics, quantum chemistry and cosmology. Quantum simulation could be implemented using quantum computers, but also with simpler, analog devices that would require less control, and therefore, would be easier to construct. A number of quantum systems such as neutral atoms, ions, polar molecules, electrons in semiconductors, superconducting circuits, nuclear spins and photons have been proposed as quantum simulators. This review outlines the main theoretical and experimental aspects of quantum simulation and emphasizes some of the challenges and promises of this fast-growing field.
description: Review article, 41 pages, 24 figures
Absence of nematic instability in LiFeAs
Creators: name: Wissmann, Michael
name: Caglieris, Federico
name: Hong, Xiaochen
name: Aswartham, Saicharan
name: Vorobyova, Anna
name: Morozov, Igor
name: Büchner, Bernd
name: Hess, Christian
Publisher: name: arXiv
Year: 2022
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The relationship between unconventional superconductivity, antiferromagnetism and nematic order in iron-based superconductors (FeSCs) is still highly debated. In many FeSCs superconductivity is in proximity of a nematically and magnetically ordered state. LiFeAs is an exceptional stoichiometric FeSC becoming superconducting below 18 K, without undergoing a structural or magnetic transition. However, some recent experimental studies suggested the existence of finite nematic fluctuations and even a nematic superconducting state. In this study, we employ elastoresistance as a measure of nematic fluctuations in pristine LiFeAs and compare the findings with the elastoresistance of LiFeAs at low Co and V doping levels as well with that of magnetically and nematically ordering NaFeAs. We find LiFeAs and cobalt-doped LiFeAs far away from a nematic instability.
Case study: Class diagram restructuring
Creators: name: Lano, K.
name: Rahimi, S. Kolahdouz
Publisher: name: arXiv
Year: 2013
Subjects: subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: This case study is an update-in-place refactoring transformation on UML class diagrams. Its aim is to remove clones of attributes from a class diagram, and to identify new classes which abstract groups of classes that share common data features. It is used as one of a general collection of transformations (such as the removal of redundant inheritance, or multiple inheritance) which aim to improve the quality of a specification or design level class diagram. The transformation is a typical example of a model refactoring, and illustrates the issues involved in such transformations.
description: In Proceedings TTC 2013, arXiv:1311.7536
MPEC 2025-C79 : 2022 LY16
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2025
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Explicit stabilized integrators for stiff optimal control problems
Creators: name: Almuslimani, Ibrahim
name: Vilmart, Gilles
Publisher: name: arXiv
Year: 2019
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: 49M25, 65L04, 65L06

description: Explicit stabilized methods are an efficient alternative to implicit schemes for the time integration of stiff systems of differential equations in large dimension. In this paper, we derive explicit stabilized integrators of orders one and two for the optimal control of stiff systems. We analyze their favorable stability properties based on the continuous optimality conditions. Furthermore, we study their order of convergence taking advantage of the symplecticity of the corresponding partitioned Runge-Kutta method involved for the adjoint equations. Numerical experiments including the optimal control of a nonlinear diffusion-advection PDE illustrate the efficiency of the new approach.
description: 23 pages
Book Review: Developing Perspectives in Mamluk History: Essays in Honor of Amalia Levanoni, edited by Yuval Ben-Bassat
Creators: name: Fuess, Albrecht
Publisher: name: The Middle East Documentation Center (MEDOC) at the University of Chicago
Year: 2020

description: Review of a festschrift assembled by Yuval Ben-Bassat (Senior Lecturer in Ottoman and Turkish History at the University of Haifa) in honor of Amalia Levanoni, emerita for Middle Eastern History at the University of Haifa.
Improving Model Drift for Robust Object Tracking
Creators: name: Dong, Qiujie
name: He, Xuedong
name: Ge, Haiyan
name: Liu, Qin
name: Han, Aifu
name: Zhou, Shengzong
Publisher: name: arXiv
Year: 2019
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Discriminative correlation filters show excellent performance in object tracking. However, in complex scenes, the apparent characteristics of the tracked target are variable, which makes it easy to pollute the model and cause the model drift. In this paper, considering that the secondary peak has a greater impact on the model update, we propose a method for detecting the primary and secondary peaks of the response map. Secondly, a novel confidence function which uses the adaptive update discriminant mechanism is proposed, which yield good robustness. Thirdly, we propose a robust tracker with correlation filters, which uses hand-crafted features and can improve model drift in complex scenes. Finally, in order to cope with the current trackers' multi-feature response merge, we propose a simple exponential adaptive merge approach. Extensive experiments are performed on OTB2013, OTB100 and TC128 datasets. Our approach performs superiorly against several state-of-the-art trackers while runs at speed in real time.
description: 7 pages, 6 figures, 4 tables
Cosmology of fermionic dark energy coupled to curvature
Creators: name: Benisty, David
Publisher: name: arXiv
Year: 2019
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: A formulation of cosmology driven by fermions $ψ$ is studied. Assumption that the expectation value of the fermion bilinear is non-zero simplifies the homogeneous solution of the Dirac equations and connects the spinor field with the scale parameter of the universe. With coupling between the Einstein term and spinor field $1 - \frac{ξ}{6} (\bar{ψ}ψ)^{-l}$, the possibility for a late time interaction emerges. In that way, the early universe agrees with $Λ$CDM model, but for the late universe the new integrating term dominates.
description: Accepted in Nuc. Phys. B
A Survey of Methods for Automated Algorithm Configuration
Creators: name: Schede, Elias
name: Brandt, Jasmin
name: Tornede, Alexander
name: Wever, Marcel
name: Bengs, Viktor
name: Hüllermeier, Eyke
name: Tierney, Kevin
Publisher: name: arXiv
Year: 2022
Subjects: subject: Artificial Intelligence (cs.AI)
subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences
subject: I.2.6

description: Algorithm configuration (AC) is concerned with the automated search of the most suitable parameter configuration of a parametrized algorithm. There is currently a wide variety of AC problem variants and methods proposed in the literature. Existing reviews do not take into account all derivatives of the AC problem, nor do they offer a complete classification scheme. To this end, we introduce taxonomies to describe the AC problem and features of configuration methods, respectively. We review existing AC literature within the lens of our taxonomies, outline relevant design choices of configuration approaches, contrast methods and problem variants against each other, and describe the state of AC in industry. Finally, our review provides researchers and practitioners with a look at future research directions in the field of AC.
On $3$-gauge transformations, $3$-curvature and $\mathbf{Gray}$-categories
Creators: name: Wang, Wei
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mathematical Physics (math-ph)
subject: High Energy Physics - Theory (hep-th)
subject: Category Theory (math.CT)
subject: Differential Geometry (math.DG)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: In the $3$-gauge theory, a $3$-connection is given by a $1$-form $A$ valued in the Lie algebra $ \mathfrak g$, a $2$-form $B$ valued in the Lie algebra $\mathfrak h $ and a $3$-form $C$ valued in the Lie algebra $ \mathfrak l $, where $(\mathfrak g,\mathfrak h, \mathfrak l)$ constitutes a differential $ 2$-crossed module. We give the $3$-gauge transformations from a $3$-connection to another, and show the transformation formulae of the $1$-curvature $2$-form, the $2$-curvature $3$-form and the $3$-curvature $4$-form. The gauge configurations can be interpreted as smooth $\mathbf{Gray}$-functors between two $\mathbf{Gray}$ $3$-groupoids: the path $3$-groupoid $\mathcal{P}_3(X)$ and the $3$-gauge group $ \mathcal{G}^{\mathscr L}$ associated to the $ 2$-crossed module $\mathscr L$, whose differential is $(\mathfrak g,\mathfrak h, \mathfrak l)$. The derivatives of $\mathbf{Gray}$-functors are $3$-connections, and the derivatives of lax-natural transformations between two such $\mathbf{Gray}$-functors are $3$-gauge transformations. We give the $3$-dimensional holonomy, the lattice version of the $3$-curvature, whose derivative gives the $3$-curvature $4$-form. The covariance of $3$-curvatures easily follows from this construction. This $\mathbf{ Gray}$-categorical construction explains why $3$-gauge transformations and $3$-curvatures have the given forms. The interchanging $3$-arrows are responsible for the appearance of terms concerning the Peiffer commutator $\{,\}$.
description: 36 pages
A Novel Max Pressure Algorithm Based on Traffic Delay
Creators: name: Liu, Hao
name: Gayah, Vikash V.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Optimization and Control (math.OC)
subject: FOS: Mathematics

description: This paper considers a novel travel-delay-based Max Pressure algorithm for control of arbitrary transportation networks with signalized intersections. The traditional number-of-vehicle-based Max Pressure (Original-MP) algorithm has received tremendous attention recently due to its ease of implementation and scalability to large network scenarios. The Original-MP algorithm also has a desirable property called maximum stability, which means a demand scenario can be accommodated by this method as long as it can be accommodated by any existing control policy. However, implementation of the Original-MP Max Pressure algorithm may be difficult in practice as estimation of queue lengths at intersections requires significant measurement infrastructure. The Original-MP framework also uses a point queue model to represent the vehicle transition between links, which does not consider the position of the vehicles, even though this may significantly impact the control performance. In addition, intersection approaches with low travel demand can incur arbitrarily large delays due to having short queues. The proposed travel-delay based Max Pressure model overcomes these drawbacks while inheriting the maximum stability feature of the Original-MP. It also is shown to outperform several benchmark Max Pressure variants in a battery of simulation tests. Lastly, the proposed algorithm can be implemented in a Connected Vehicle (CV) environment, in which a subset of vehicles serve as mobile probes. The results show the proposed travel-delay-based model generates lower delay with non-full penetration rate than the benchmark models with full penetration rate under certain traffic conditions.
description: This paper was published on Transportation Research Part C: Emerging Technologies
Topological Fulde-Ferrell superfluid in spin-orbit coupled atomic Fermi gases
Creators: name: Liu, Xia-Ji
name: Hu, Hui
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We theoretically predict a new topological matter - topological inhomogeneous Fulde-Ferrell superfluid - in one-dimensional atomic Fermi gases with equal Rashba and Dresselhaus spin-orbit coupling near s-wave Feshbach resonances. The realization of such a spin-orbit coupled Fermi system has already been demonstrated recently by using a two-photon Raman process and the extra one-dimensional confinement is easy to achieve using a tight two-dimensional optical lattice. The topological Fulde-Ferrell superfluid phase is characterized by a nonzero center-of-mass momentum and a non-trivial Berry phase. By tuning the Rabi frequency and the detuning of Raman laser beams, we show that such an exotic topological phase occupies a significant part of parameter space and therefore it could be easily observed experimentally, by using, for example, momentum-resolved and spatially resolved radio-frequency spectroscopy.
description: 5 pages, 4 figures