cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Model exploration in gravitational-wave astronomy with the maximum population likelihood
Creators: name: Payne, Ethan
name: Thrane, Eric
Publisher: name: arXiv
Year: 2022
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Hierarchical Bayesian inference is an essential tool for studying the population properties of compact binaries with gravitational waves. The basic premise is to infer the unknown prior distribution of binary black hole and/or neutron star parameters such component masses, spin vectors, and redshift. These distributions shed light on the fate of massive stars, how and where binaries are assembled, and the evolution of the Universe over cosmic time. Hierarchical analyses model the binary black hole population using a prior distribution conditioned on hyper-parameters, which are inferred from the data. However, a misspecified model can lead to faulty astrophysical inferences. In this paper we answer the question: given some data, which prior distribution--from the set of all possible prior distributions--produces the largest possible population likelihood? This distribution (which is not a true prior) is $\pistroke$ (pronounced "pi stroke"), and the associated \textit{maximum population likelihood} is $\Lstroke$ (pronounced "L stroke"). The structure of $\pistroke$ is a linear superposition of delta functions, a result which follows from Carath{é}odory's theorem. We show how $\pistroke$ and $\Lstroke$ can be used for model exploration/criticism. We apply this $\Lstroke$ formalism to study the population of binary black hole mergers observed in LIGO--Virgo--KAGRA's third Gravitational-Wave Transient Catalog. Based on our results, we discuss possible improvements for gravitational-wave population models.
description: 20 pages, 9 figures
Rectangle--triangle soft-matter quasicrystals with hexagonal symmetry
Creators: name: Archer, Andrew J.
name: Dotera, Tomonari
name: Rucklidge, Alastair M.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences
subject: 35B36 52C23

description: Aperiodic (quasicrystalline) tilings, such as Penrose's tiling, can be built up from e.g. kites and darts, squares and equilateral triangles, rhombi or shield shaped tiles and can have a variety of different symmetries. However, almost all quasicrystals occurring in soft-matter are of the dodecagonal type. Here, we investigate a class of aperiodic tilings with hexagonal symmetry that are based on rectangles and two types of equilateral triangles. We show how to design soft-matter systems of particles interacting via pair potentials containing two length-scales that form aperiodic stable states with two different examples of rectangle--triangle tilings. One of these is the bronze-mean tiling, while the other is a generalization. Our work points to how more general (beyond dodecagonal) quasicrystals can be designed in soft-matter.
description: 15 pages, 13 figures. Submitted to Physical Review E. The data associated with this paper are openly available from the University of Leeds Data Repository at https://doi.org/10.5518/1188
Hierarchical forecasting for aggregated curves with an application to day-ahead electricity price auctions
Creators: name: Ghelasi, Paul
name: Ziel, Florian
Publisher: name: arXiv
Year: 2023
Subjects: subject: Applications (stat.AP)
subject: Machine Learning (cs.LG)
subject: Econometrics (econ.EM)
subject: Trading and Market Microstructure (q-fin.TR)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences
subject: FOS: Economics and business

description: Aggregated curves are common structures in economics and finance, and the most prominent examples are supply and demand curves. In this study, we exploit the fact that all aggregated curves have an intrinsic hierarchical structure, and thus hierarchical reconciliation methods can be used to improve the forecast accuracy. We provide an in-depth theory on how aggregated curves can be constructed or deconstructed, and conclude that these methods are equivalent under weak assumptions. We consider multiple reconciliation methods for aggregated curves, including previously established bottom-up, top-down, and linear optimal reconciliation approaches. We also present a new benchmark reconciliation method called 'aggregated-down' with similar complexity to bottom-up and top-down approaches, but it tends to provide better accuracy in this setup. We conducted an empirical forecasting study on the German day-ahead power auction market by predicting the demand and supply curves, where their equilibrium determines the electricity price for the next day. Our results demonstrate that hierarchical reconciliation methods can be used to improve the forecasting accuracy of aggregated curves.
description: 34 pages, 6 figures. International Journal of Forecasting (2022)
Inhibitory columnar feedback neurons are required for peripheral visual processing
Creators: name: Henning, Miriam
name: Lüffe, Teresa
name: Goal, Daryl
name: Clandinin, Thomas
name: Silies, Marion
Publisher: name: G-Node
Year: 2024
Subjects: Computational Neuroscience
Sensory processing and perception

description: Bernstein Conference 2024 abstract. https://bernstein-conference.de
Chern-insulator phases and spontaneous spin and valley order in a moiré lattice model for magic-angle twisted bilayer graphene
Creators: name: Breiø, Clara N.
name: Andersen, Brian M.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: At a certain "magic" relative twist angle of two graphene sheets it remains a challenge to obtain a detailed description of the proliferation of correlated topological electronic phases and their filling-dependence. We perform a self-consistent real-space Hartree-Fock study of an effective moir{é} lattice model to map out the preferred ordered phases as a function of Coulomb interaction strength and moir{é} flat-band filling factor. It is found that a quantum valley Hall phase, previously discovered at charge neutrality, is present at all integer fillings for sufficiently large interactions. However, except from charge neutrality additional spontaneous spin/valley polarization is present in the ground state at nonzero integer fillings, leading to Chern-insulator phases and anomalous quantum Hall effects at odd filling factors, thus constituting an example of interaction-driven nontrivial topology. At weaker interactions, all nonzero integer fillings feature metallic inhomogeneous spin/valley ordered phases which may also break additional point group symmetries of the system. We discuss these findings in the light of previous theoretical studies and recent experimental developments of magic-angle twisted bilayer graphene.
description: 11 pages, 6 figures
Secrecy Wireless Information and Power Transfer with MISO Beamforming
Creators: name: Liu, Liang
name: Zhang, Rui
name: Chua, Kee-Chaing
Publisher: name: arXiv
Year: 2013
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: The dual use of radio signals for simultaneous wireless information and power transfer (SWIPT) has recently drawn significant attention. To meet the practical requirement that energy receivers (ERs) operate with significantly higher received power as compared to information receivers (IRs), ERs need to be deployed in more proximity to the transmitter than IRs. However, due to the broadcast nature of wireless channels, one critical issue arises that the messages sent to IRs can be eavesdropped by ERs, which possess better channels from the transmitter. In this paper, we address this new secrecy communication problem in a multiuser multiple-input single-output (MISO) SWIPT system where one multi-antenna transmitter sends information and energy simultaneously to an IR and multiple ERs, each with one single antenna. To optimally design transmit beamforming vectors and their power allocation, two problems are investigated with different aims: the first problem maximizes the secrecy rate for IR subject to individual harvested energy constraints of ERs, while the second problem maximizes the weighted sum-energy transferred to ERs subject to a secrecy rate constraint for IR. We solve these two non-convex problems optimally by reformulating each of them into a two-stage problem. First, by fixing the signal-to-interference-plus-noise ratio (SINR) target for ERs (for the first problem) or IR (for the second problem), we obtain the optimal beamforming and power allocation solution by applying the technique of semidefinite relaxation (SDR). Then, the original problems are solved by a one-dimension search over the optimal SINR target for ERs or IR. Furthermore, for each of the two studied problems, suboptimal solutions of lower complexity are also proposed in which the information and energy beamforming vectors are separately designed with their power allocation.
description: accepted by IEEE Transactions on Signal Processing. Longer version of arXiv:1306.0969
Information flow in the somatosensory system : From Mechanoreceptor to Cortex
Creators: name: Rault, Nicolas
name: Tompos, Tea
name: Celikel, Tansu
name: Zeldenrust, Fleur
Publisher: name: G-Node
Year: 2024
Subjects: Computational Neuroscience
Sensory processing and perception

description: Bernstein Conference 2024 abstract. https://bernstein-conference.de
Fully-gapped superconductivity and topological aspects of the noncentrosymmetric TaReSi superconductor
Creators: name: Shang, T.
name: Zhao, J. Z.
name: Hu, Lun-Hui
name: Gawryluk, D. J.
name: Zhu, X. Y.
name: Zhang, H.
name: Meng, J.
name: Zhen, Z. X.
name: Yu, B. C.
name: Zhou, Z.
name: Xu, Y.
name: Zhan, Q. F.
name: Pomjakushina, E.
name: Shiroka, T.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We report a study of the noncentrosymmetric TaReSi superconductor by means of muon-spin rotation and relaxation ($μ$SR) technique, complemented by electronic band-structure calculations. Its superconductivity, with $T_c$ = 5.5 K and upper critical field $μ_0H_\mathrm{c2}(0)$ $\sim$ 3.4 T, was characterized via electrical-resistivity- and magnetic-susceptibility measurements. The temperature-dependent superfluid density, obtained from transverse-field $μ$SR, suggests a fully-gapped superconducting state in TaReSi, with an energy gap $Δ_0$ = 0.79 meV and a magnetic penetration depth $λ_0$ = 562 nm. The absence of a spontaneous magnetization below $T_c$, as confirmed by zero-field $μ$SR, indicates a preserved time-reversal symmetry in the superconducting state. The density of states near the Fermi level is dominated by the Ta- and Re-5$d$ orbitals, which account for the relatively large band splitting due to the antisymmetric spin-orbit coupling. In its normal state, TaReSi behaves as a three-dimensional Kramers nodal-line semimetal, characterized by an hourglass-shaped dispersion protected by glide reflection. By combining non\-triv\-i\-al electronic bands with intrinsic superconductivity, TaReSi is a promising material for investigating the topological aspects of noncentrosymmetric superconductors.
description: 9 pages, 9 figures; accepted by Phys. Rev. B
A Swift X-ray view of the SMS4 sample -- X-ray properties of 31 quasars and radio galaxies
Creators: name: Maselli, Alessandro
name: Forman, William R.
name: Jones, Christine
name: Kraft, Ralph P.
name: Perri, Matteo
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We present Swift observations of 31 sources from the SMS4 catalog, a sample of 137 bright radio sources in the Southern Hemisphere. All these sources had no Chandra or XMM-Newton observations: 24 of these were observed with Swift through a dedicated proposal in 2015, and data for the remaining seven were retrieved from the Swift archive. The reduction and analysis of data collected by the Swift X-ray Telescope (XRT) led to 20 detections in the 0.3--10 keV band. We provide details of the X-ray emission in this band for these 20 detections, as well as upper limits for the remaining 11 SMS4 sources. When statistics allowed, we investigated the extent of the X-ray emission, the hardness ratio, and we carried out a spectral analysis. We matched the 20 X-ray detected sources with infrared (AllWISE, CatWISE2020) and optical (GSC 2.3.2, DES DR2) catalogs to establish associations with infrared and optical sources, and compared our results with previously published counterparts in these bands. Requiring a detection in both the infrared and the optical bands to establish a candidate counterpart for our X-ray detections, we obtain reliable counterparts for 18 sources, while the remaining two sources need further investigation to establish firm identifications. We find that ~35% of all the SMS4 sources lie below the lower limit of 10.9 Jy for the flux density at 178 MHz. We present the list of 56 SMS4 sources that in 2022 March remain to be observed in the X-rays with narrow-field instruments.
description: After rearranging some text in Section 5.3 and fixing a few errors, references, and typos, this version complies with the published paper
Double gauge invariance and covariantly-constant vector fields in Weyl geometry
Creators: name: Kassandrov, Vladimir V.
name: Rizcallah, Joseph A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The wave equation and equations of covariantly-constant vector fields (CCVF) in spaces with Weyl nonmetricity turn out to possess, in addition to the canonical conformal-gauge, a gauge invariance of another type. On a Minkowski metric background, the CCVF system alone allows us to pin down the Weyl 4-metricity vector, identified herein with the electromagnetic potential. The fundamental solution is given by the ordinary Lienard-Wiechert field, in particular, by the Coulomb distribution for a charge at rest. Unlike the latter, however, the magnitude of charge is necessarily unity, "elementary", and charges of opposite signs correspond to retarded and advanced potentials respectively, thus establishing a direct connection between the particle/antiparticle asymmetry and the "arrow of time".
description: 8 pages. Eq.(35) and some comments added. Misprints removed. Adapted for GERG-format
Modeling Decision-Making in Trajectory Extrapolation Tasks: Comparing Random Sampling Model and Multi-Layer Perceptron Approaches
Creators: name: Polezhaeva, Olga
name: Amorim, Michel-Ange
name: Glasauer, Stefan
Publisher: name: G-Node
Year: 2024
Subjects: Computational Neuroscience
Sensory processing and perception

description: Bernstein Conference 2024 abstract. https://bernstein-conference.de
Nonuniform grids for Brillouin zone integration and interpolation
Creators: name: Chen, Siyu
name: Salzbrenner, Pascal T.
name: Monserrat, Bartomeu
Publisher: name: arXiv
Year: 2022
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: We present two developments for the numerical integration of a function over the Brillouin zone. First, we introduce a nonuniform grid, which we refer to as the Farey grid, that generalizes regular grids. Second, we introduce symmetry-adapted Voronoi tessellation, a general technique to assign weights to the points in an arbitrary grid. Combining these two developments, we propose a strategy to perform Brillouin zone integration and interpolation that provides a significant computational advantage compared to the usual approach based on regular uniform grids. We demonstrate our methodology in the context of first principles calculations with the study of Kohn anomalies in the phonon dispersions of graphene and MgB2, and in the evaluation of the electron-phonon driven renormalization of the band gaps of diamond and bismuthene. In the phonon calculations, we find speedups by a factor of 3 to 4 when using density functional perturbation theory, and by a factor of 6 to 7 when using finite differences in conjunction with supercells. As a result, the computational expense between density functional perturbation theory and finite differences becomes comparable. For electron-phonon coupling calculations we find even larger speedups. Finally, we also demonstrate that the Farey grid can be expressed as a combination of the widely used regular grids, which should facilitate the adoption of this methodology.
description: 19 pages, 9 figures
Gauss quadrature for integrals and sums
Creators: name: Alhaidari, A. D.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics

description: Gauss quadrature integral approximation is extended to include integrals with a measure consisting of continuous as well as discrete components. That is, we give an approximation for the integral of a function plus its sum over a discrete weighted set.
description: 10 pages, 3 tables
Modeling spatial and temporal attractive and repulsive biases in perception
Creators: name: Glasauer, Stefan
name: Medendorp, W. P.
name: Amorim, Michel-Ange
Publisher: name: G-Node
Year: 2024
Subjects: Computational Neuroscience
Sensory processing and perception

description: Bernstein Conference 2024 abstract. https://bernstein-conference.de
Tuning the conductance topology in solids
Creators: name: Lopez-Richard, Victor
name: Silva, Rafael Schio Wengenroth
name: Lipan, Ovidiu
name: Hartmann, Fabian
Publisher: name: arXiv
Year: 2022
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The inertia of trapping and detrapping of nonequilibrium charge carriers affects the electrochemical and transport properties of both bulk and nanoscopic structures in a very peculiar way. An emerging memory response with a hysteresis in the current-voltage response and its eventual multiple crossing, produced by this universally available ingredient, are signatures of this process. Here, we deliver a microscopic and analytical solution for these behaviors, understood as the modulation of the topology of the current-voltage loops. The memory emergence becomes thus a characterization tool for intrinsic features that affect the electronic transport of solids such as the nature and number of trapping sites, intrinsic symmetry constraints, and natural relaxation time scales. This method is also able to reduce the seeming complexity of frequency-dependent electrochemical impedance and cyclic voltammetry observable for a variety of systems to a combination of simple microscopic ingredients.
description: 9 pages, 7 figures. This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in Journal of Applied Physics 133, 134901 (2023) and may be found at https://aip.scitation.org/doi/full/10.1063/5.0142721
Kähler non-collapsing, eigenvalues and the Calabi flow
Creators: name: Li, Haozhao
name: Zheng, Kai
Publisher: name: arXiv
Year: 2013
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 53C44

description: We first proved a compactness theorem of the Kähler metrics, which confirms a prediction of Chen. Then we prove several eigenvalue estimates along the Calabi flow. Combining the compactness theorem and these eigenvalue estimates, we generalize the method developed by Chen-Li-Wang to prove the small energy theorems of the Calabi flow.
description: 33 pages, final version, to appear in Journal of Functional Analysis
How Do Bees See the World? A (Normative) Deep Reinforcement Learning Model for Insect Navigation
Creators: name: Lochner, Stephan
name: Straw, Andrew D.
Publisher: name: G-Node
Year: 2024
Subjects: Computational Neuroscience
Sensory processing and perception

description: Bernstein Conference 2024 abstract. https://bernstein-conference.de
Quantum Fisher information for states in exponential form
Creators: name: Jiang, Zhang
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We derive explicit expressions for the quantum Fisher information and the symmetric logarithmic derivative (SLD) of a quantum state in the exponential form; the SLD is expressed in terms of the generator. Applications include quantum-metrology problems with Gaussian states and general thermal states. Specifically, we give the SLD for a Gaussian state in two forms, in terms of its generator and its moments; the Fisher information is also calculated for both forms. Special cases are discussed, including pure, degenerate, and very noisy Gaussian states.
description: 10 pages
Alternative Methylated Biosignatures I: Methyl Bromide, A Capstone Biosignature
Creators: name: Leung, Michaela
name: Schwieterman, Edward W.
name: Parenteau, Mary N.
name: Fauchez, Thomas J.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: The first potential exoplanet biosignature detections are likely to be ambiguous due to the potential for false positives: abiotic planetary processes that produce observables similar to those anticipated from a global biosphere. Here we propose a class of methylated gases as corroborative `capstone' biosignatures. Capstone biosignatures are metabolic products that may be less immediately detectable, but have substantially lower false positive potential, and can thus serve as confirmation for a primary biosignature such as O$_2$. CH$_3$Cl has previously been established as a biosignature candidate, and other halomethane gases such as CH$_3$Br and CH$_3$I have similar potential. These gases absorb in the mid infrared at wavelengths that are likely to be captured while observing primary biosignatures such as O$_3$ or CH$_4$. We quantitatively explore CH$_3$Br as a new capstone biosignature through photochemical and spectral modeling of Earth-like planets orbiting FGKM stellar hosts. We also re-examine the biosignature potential of CH$_3$Cl over the same set of parameters using our updated model. We show that CH$_3$Cl and CH$_3$Br can build up to relatively high levels in M dwarf environments and analyze synthetic spectra of TRAPPIST-1e. Our results suggest that there is a co-additive spectral effect from multiple CH$_3$X gases in an atmosphere, leading to increased signal-to-noise and greater ability to detect a methylated gas feature. These capstone biosignatures are plausibly detectable in exoplanetary atmospheres, have low false positive potential, and would provide strong evidence for life in conjunction with other well established biosignature candidates.
description: 18 pages, 11 figures, appendix. Published in ApJ
Weak value amplification is suboptimal for estimation and detection
Creators: name: Ferrie, Christopher
name: Combes, Joshua
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We show using statistically rigorous arguments that the technique of weak value amplification (WVA) does not perform better than standard statistical techniques for the tasks of single parameter estimation and signal detection. Specifically we prove that post-selection, a necessary ingredient for WVA, decreases estimation accuracy and, moreover, arranging for anomalously large weak values is a suboptimal strategy. In doing so, we explicitly provide the optimal estimator, which in turn allows us to identify the optimal experimental arrangement to be the one in which all outcomes have equal weak values (all as small as possible) and the initial state of the meter is the maximal eigenvalue of the square of the system observable. Finally, we give precise quantitative conditions for when weak measurement (measurements without post-selection or anomalously large weak values) can mitigate the effect of uncharacterized technical noise in estimation.
description: This is a significant revision which is closer to the published version
Multi-state asymmetric simple exclusion processes
Creators: name: Matsui, Chihiro
Publisher: name: arXiv
Year: 2013
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Mathematical Physics (math-ph)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: It is known that the Markov matrix of the asymmetric simple exclusion process (ASEP) is invariant under the Uq(sl2) algebra. This is the result of the fact that the Markov matrix of the ASEP coincides with the generator of the Temperley-Lieb (TL) algebra, the dual algebra of the Uq(sl2) algebra. Various types of algebraic extensions have been considered for the ASEP. In this paper, we considered the multi-state extension of the ASEP, by allowing more than two particles to occupy the same box. We constructed the Markov matrix by dimensionally extending the TL generators and derived explicit forms of the particle densities and the currents on the steady states. Then we showed how decay lengths differ from the original two-state ASEP under the closed boundary conditions.
description: 41pages, 10 figures; explicit forms of the fused Temperley-Lieb generators are added; J. Stat. Phys. (2014)
On the effect of angular momentum on the prompt cusp formation via the gravitational collapse
Creators: name: Del Popolo, Antonino
name: Fakhry, Saeed
Publisher: name: arXiv
Year: 2023
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this work, we extend the model proposed by White concerning the post-collapse evolution of density peaks while considering the role of angular momentum. On a timescale smaller than the peak collapse, $t_{0}$, the inner regions of the peak reach the equilibrium forming a cuspy profile, as in White's paper, but the power-law density profile is flatter, namely $ρ\propto r^{-1.52}$, using the specific angular momentum $J$ obtained in theoretical models of how it evolves in CDM universes, namely $J \propto M^{2/3}$. The previous result shows how angular momentum influences the slope of the density profile, and how a slightly flatter profile obtained in high-resolution numerical simulations, namely $ρ\propto r^α$, $(α\simeq -1.5)$ can be reobtained. Similarly to simulations, in our model adiabatic contraction was not taken into account. This means that more comprehensive simulations could give different values for the slope of the density profile, similar to an improvement of our model.
description: 7 pages, 1 figure, refs. added
Bounds on depth of tensor products of modules
Creators: name: Celikbas, Olgur
name: Sadeghi, Arash
name: Takahashi, Ryo
Publisher: name: arXiv
Year: 2013
Subjects: subject: Commutative Algebra (math.AC)
subject: FOS: Mathematics

description: Let $R$ be a local complete intersection ring and let $M$ and $N$ be nonzero finitely generated $R$-modules. We employ Auslander's transpose in the study of the vanishing of Tor and obtain useful bounds for the depth of the tensor product $M\otimes_{R}N$. An application of our main argument shows that, if $M$ is locally free on the the punctured spectrum of $R$, then either $\depth(M\otimes_{R}N)\geq \depth(M)+\depth(N)-\depth(R)$, or $\depth(M\otimes_{R}N)\leq \cod(R)$. Along the way we generalize an important theorem of D. A. Jorgensen and determine the number of consecutive vanishing of $\Tor_i^R(M,N)$ required to ensure the vanishing of all higher $\Tor_i^R(M,N)$.
description: Grant information included. To appear in Journal of Pure and Applied Algebra
Nonlinear optomechanical resonance entering a self-organized energy transfer pattern
Creators: name: Lin, Qing
name: Wu, Yi
name: Li, Gang
name: He, Bing
Publisher: name: arXiv
Year: 2023
Subjects: subject: Optics (physics.optics)
subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: FOS: Physical sciences

description: The energy transfer between different subsystems or different vibration modes is always one of the most interested problems in the study of the resonance phenomena in coupled nonlinear dynamical systems. With an optomechanical system operating in the regime of unresolved sideband, where its mechanical frequency is lower than the cavity field damping rate, we illustrate the existence of a special nonlinear resonance phenomenon. This type of previously unknown resonance manifests an organized pattern of the coupled cavity field and mechanical oscillation, so that the cavity field precisely pushes the mechanical oscillator within an appropriate small time window in each mechanical oscillation period and the mechanical energy will increase by a jump of almost fixed amount after each oscillation cycle. The scenario is realized at a resonance point where the frequency difference of two driving fields matches the mechanical frequency of the system, and this condition of drive-frequency match is found to trigger a mechanism to lock the two subsystems of an unresolved-sideband optomechanical system into a highly ordered energy transfer as the above mentioned. Due to a significantly enhanced nonlinearity in the vicinity of the resonance point, optical frequency combs can be generated under pump powers of thousand times lower, as compared to the use of a single-tone driving field for the purpose. An unresolved sideband system under the drives without satisfying the resonance condition also demonstrates other interesting dynamical behaviors. Most of all, by providing a realistic picture for the nonlinear optomechanical dynamics in unresolved sideband regime, our study points to a direction to observe novel dynamical phenomena and realize other applications with the systems of less technical restrictions.
description: 13 pages, 13 figures. To be published on Chaos, Solitons & Fractals
title: Graben-Neudorf, Kreis Karlsruhe. Umnutzung eines Bahnhofs zu einer Gemeindebibliothek
Creators: name: Freyer, Konrad
Publisher: name: University Library Heidelberg
Year: 2014

description: Denkmalpflege in Baden-Württemberg – Nachrichtenblatt der Landesdenkmalpflege, Bd. 27, Nr. 3 (1998), Beginn und Erscheinungsfrequenz: Ausgaben pro Band: 4
Co-development of accommodation and vergence and quantification of their interaction
Creators: name: Lundbeck, Theresa
name: López, Francisco M.
name: Shi, Bertram E.
name: Triesch, Jochen
Publisher: name: G-Node
Year: 2024
Subjects: Computational Neuroscience
Sensory processing and perception

description: Bernstein Conference 2024 abstract. https://bernstein-conference.de
The Integrated Information Theory of consciousness: a philosophical assessment
Creators: name: NEGRO, NICCOLO
Publisher: name: Monash University
Year: 2022
Subjects: Philosophy of mind (excl. cognition)

description: The relation between consciousness and the physical world remains one of the big open questions of science. The integrated information theory (IIT) provides a unique and influential solution to this long-standing issue. In this thesis, I provide a neuroscientifically informed, comprehensive philosophical assessment of IIT. I assess its strengths and weaknesses without dismissing its own assumptions and without uncritically accepting its conclusions. I critically examine IIT’s epistemological foundations, its arguments, and its metaphysical implications. This thesis argues that IIT is a legitimate effort to explain consciousness, but it also faces multiple problems. I suggest ways to move the debate forward.
title: Breisach „Schlösslematt" ein Wohnbau der barocken Belagerungswerke
Creators: name: Redaktion, Die
Publisher: name: University Library Heidelberg
Year: 2014

description: Denkmalpflege in Baden-Württemberg – Nachrichtenblatt der Landesdenkmalpflege, Bd. 29, Nr. 3 (2000), Beginn und Erscheinungsfrequenz: Ausgaben pro Band: 4
Teleportation of Hybrid Entangled States with Continuous-Variable Entanglement
Creators: name: He, Mingjian
name: Malaney, Robert
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Hybrid entanglement between discrete-variable (DV) and continuous-variable (CV) quantum systems is an essential resource for heterogeneous quantum networks. Our previous work showed that in lossy channels the teleportation of DV qubits, via CV-entangled states, can be significantly improved by a new protocol defined by a modified Bell state measurement at the sender. This work explores whether a new, similarly modified, CV-based teleportation protocol can lead to improvement in the transfer of hybrid entangled states. To set the scene, we first determine the performance of such a modified protocol in teleporting CV-only qubits, showing that significant improvement over traditional CV-based teleportation is obtained. We then explore similar modifications in the teleportation of a specific hybrid entangled state showing that significant improvement over traditional CV-based teleportation is again found. For a given channel loss, we find teleporting the DV qubit of the hybrid entangled state can always achieve higher fidelity than teleporting the CV qubit. We then explore the use of various non-Gaussian operations in our modified teleportation protocol, finding that, at a cost of lower success probability, quantum scissors provides the most improvement in the loss tolerance. Our new results emphasize that in lossy conditions, the quantum measurements undertaken at the sender can have a surprising and dramatic impact on CV-based teleportation.
description: 9 pages, 9 figures
Classification scheme of pure multipartite states based on topological phases
Creators: name: Johansson, Markus
name: Ericsson, Marie
name: Sjöqvist, Erik
name: Osterloh, Andreas
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We investigate the connection between the concept of affine balancedness (a-balancedness) introduced in [Phys. Rev A. {\bf 85}, 032112 (2012)] and polynomial local SU invariants and the appearance of topological phases respectively. It is found that different types of a-balancedness correspond to different types of local SU invariants analogously to how different types of balancedness as defined in [New J. Phys. {\bf 12}, 075025 (2010)] correspond to different types of local SL invariants. These different types of SU invariants distinguish between states exhibiting different topological phases. In the case of three qubits the different kinds of topological phases are fully distinguished by the three-tangle together with one more invariant. Using this we present a qualitative classification scheme based on balancedness of a state. While balancedness and local SL invariants of bidegree $(2n,0)$ classify the SL-semistable states [New J. Phys. {\bf 12}, 075025 (2010), Phys. Rev. A {\bf 83} 052330 (2011)], a-balancedness and local SU invariants of bidegree $(2n-m,m)$ gives a more fine grained classification. In this scheme the a-balanced states form a bridge from the genuine entanglement of balanced states, invariant under the SL-group, towards the entanglement of unbalanced states characterized by U invariants of bidegree $(n,n)$. As a by-product we obtain generalizations to the W-state, states that are entangled, but contain only globally distributed entanglement of parts of the system.
description: Title changed, minor edits
Rhythm-structured predictive coding for contextualized speech processing
Creators: name: Dogonasheva, Olesia
name: Zakharov, Denis
name: Giraud, Anne-Lise
name: Gutkin, Boris
Publisher: name: G-Node
Year: 2024
Subjects: Computational Neuroscience
Networks and dynamical systems

description: Bernstein Conference 2024 abstract. https://bernstein-conference.de
title: Biberach. Geschichte und Kunstgeschichte einer alten Reichsstadt
Creators: name: Diemer, Kurt
Publisher: name: University Library Heidelberg
Year: 2014

description: Denkmalpflege in Baden-Württemberg – Nachrichtenblatt der Landesdenkmalpflege, Bd. 32, Nr. 1 (2003), Beginn und Erscheinungsfrequenz: Ausgaben pro Band: 4
Analysis of complex singularities in high-Reynolds-number Navier-Stokes solutions
Creators: name: Gargano, Francesco
name: Sammartino, Marco
name: Sciacca, Vincenzo
name: Cassel, Kevin W.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Mathematical Physics (math-ph)
subject: Complex Variables (math.CV)
subject: Numerical Analysis (math.NA)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: Numerical solutions of the laminar Prandtl boundary-layer and Navier-Stokes equations are considered for the case of the two-dimensional uniform flow past an impulsively-started circular cylinder. We show how Prandtl's solution develops a finite time separation singularity. On the other hand Navier-Stokes solution is characterized by the presence of two kinds of viscous-inviscid interactions that can be detected by the analysis of the enstrophy and of the pressure gradient on the wall. Moreover we apply the complex singularity tracking method to Prandtl and Navier-Stokes solutions and analyze the previous interactions from a different perspective.
Single-cell morphological data provide refined simulations of resting-state
Creators: name: Qian, Penghao
name: Manubens-Gil, Linus
name: Peng, Hanchuan
Publisher: name: G-Node
Year: 2024
Subjects: Computational Neuroscience
Networks and dynamical systems

description: Bernstein Conference 2024 abstract. https://bernstein-conference.de
Milestones in Autonomous Driving and Intelligent Vehicles Part II: Perception and Planning
Creators: name: Chen, Long
name: Teng, Siyu
name: Li, Bai
name: Na, Xiaoxiang
name: Li, Yuchen
name: Li, Zixuan
name: Wang, Jinjun
name: Cao, Dongpu
name: Zheng, Nanning
name: Wang, Fei-Yue
Publisher: name: arXiv
Year: 2023
Subjects: subject: Robotics (cs.RO)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: Growing interest in autonomous driving (AD) and intelligent vehicles (IVs) is fueled by their promise for enhanced safety, efficiency, and economic benefits. While previous surveys have captured progress in this field, a comprehensive and forward-looking summary is needed. Our work fills this gap through three distinct articles. The first part, a "Survey of Surveys" (SoS), outlines the history, surveys, ethics, and future directions of AD and IV technologies. The second part, "Milestones in Autonomous Driving and Intelligent Vehicles Part I: Control, Computing System Design, Communication, HD Map, Testing, and Human Behaviors" delves into the development of control, computing system, communication, HD map, testing, and human behaviors in IVs. This part, the third part, reviews perception and planning in the context of IVs. Aiming to provide a comprehensive overview of the latest advancements in AD and IVs, this work caters to both newcomers and seasoned researchers. By integrating the SoS and Part I, we offer unique insights and strive to serve as a bridge between past achievements and future possibilities in this dynamic field.
description: 17pages, 6figures. IEEE Transactions on Systems, Man, and Cybernetics: Systems. arXiv admin note: text overlap with arXiv:2303.09824
Photon scattering errors during stimulated Raman transitions in trapped-ion qubits
Creators: name: Moore, I. D.
name: Campbell, W. C.
name: Hudson, E. R.
name: Boguslawski, M. J.
name: Wineland, D. J.
name: Allcock, D. T. C.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We study photon scattering errors in stimulated Raman driven quantum logic gates. For certain parameter regimes, we find that previous, simplified models of the process significantly overestimate the gate error rate due to photon scattering. This overestimate is shown to be due to previous models neglecting the detuning dependence of the scattered photon frequency and Lamb-Dicke parameter, a second scattering process, interference effects on scattering rates to metastable manifolds, and the counter-rotating contribution to the Raman transition rate. The resulting improved model shows that there is no fundamental limit on gate error due to photon scattering for electronic ground state qubits in commonly-used trapped-ion species when the Raman laser beams are red detuned from the main optical transition. Additionally, photon scattering errors are studied for qubits encoded in metastable $D_{5/2}$ manifold, showing that gate errors below $10^{-4}$ are achievable for all commonly-used trapped ions.
description: 24 pages, 8 figures, to be submitted to Phys. Rev. A. In this version, we changed the two-qubit gate under consideration. Originally, we considered a gate driven by two perpendicular pairs of Raman beams. In this version, we consider a gate driven by a pair of Raman beams counterpropagating against a third Raman beam
title: 50 Jahre Denkmalpflege in Baden-Württemberg. Inventarisation
Creators: name: Osteneck, Volker
Publisher: name: University Library Heidelberg
Year: 2014

description: Denkmalpflege in Baden-Württemberg – Nachrichtenblatt der Landesdenkmalpflege, Bd. 32, Nr. 1 (2003), Beginn und Erscheinungsfrequenz: Ausgaben pro Band: 4
title: Der Dom zu Rottenburg. Aspekte der Umbaugeschichte
Creators: name: Goer, Michael
Publisher: name: University Library Heidelberg
Year: 2014

description: Denkmalpflege in Baden-Württemberg – Nachrichtenblatt der Landesdenkmalpflege, Bd. 32, Nr. 1 (2003), Beginn und Erscheinungsfrequenz: Ausgaben pro Band: 4
title: Denkmalverschleiß durch Massentourismus? Welterbestätte Reichenau
Creators: name: Reichwald, Helmut F.
Publisher: name: University Library Heidelberg
Year: 2014

description: Denkmalpflege in Baden-Württemberg – Nachrichtenblatt der Landesdenkmalpflege, Bd. 32, Nr. 3 (2003), Beginn und Erscheinungsfrequenz: Ausgaben pro Band: 4
Hunting for topological dark matter with atomic clocks
Creators: name: Derevianko, A.
name: Pospelov, M.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The cosmological applications of atomic clocks so far have been limited to searches of the uniform-in-time drift of fundamental constants. In this paper, we point out that a transient in time change of fundamental constants can be induced by dark matter objects that have large spatial extent, and are built from light non-Standard Model fields. The stability of this type of dark matter can be dictated by the topological reasons. We point out that correlated networks of atomic clocks, some of them already in existence, can be used as a powerful tool to search for the topological defect dark matter, thus providing another important fundamental physics application to the ever-improving accuracy of atomic clocks. During the encounter with a topological defect, as it sweeps through the network, initially synchronized clocks will become desynchronized. Time discrepancies between spatially-separated clocks are expected to exhibit a distinct signature, encoding defect's space structure and its interaction strength with the Standard Model fields.
description: Extensive supplementary information added
Pyramidal Interneuron Next-Generation Neural Mass Model: Synaptic Properties and Stimulation Response
Creators: name: Aristides, Raul D.P.
name: Cobero, Pau C.
name: Sanchez-Todo, Roser
name: Ruffini, Giulio
name: Garcia-Ojalvo, Jordi
Publisher: name: G-Node
Year: 2024
Subjects: Computational Neuroscience
Networks and dynamical systems

description: Bernstein Conference 2024 abstract. https://bernstein-conference.de
Activity-Dependent Network Development in Silico: The Role of Inhibition in Neuronal Growth and Migration
Creators: name: Crisostomo, Richmond L.
name: Agarwal, Shreya
name: Egert, Ulrich
name: Okujeni, Samora
Publisher: name: G-Node
Year: 2024
Subjects: Computational Neuroscience
Networks and dynamical systems

description: Bernstein Conference 2024 abstract. https://bernstein-conference.de
Holographic dark energy in modified Barrow cosmology
Creators: name: Sheykhi, Ahmad
name: Hamedan, Maral Sahebi
Publisher: name: arXiv
Year: 2022
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Thermodynamics-Gravity conjecture implies that there is a deep connection between the gravitational field equations and the first law of thermodynamics. Therefore, any modification to the entropy expression, directly modifies the field equations. By considering the modified Barrow entropy associated with the apparent horizon, the Friedmann equations get modified as well. In this paper, we reconsider the holographic dark energy (HDE) model when the entropy is in the form of Barrow entropy. This modification to the entropy not only changes the energy density of HDE, but also modifies the Friedmann equations. Therefore, one should take into account the modified HDE in the context of modified Friedmann equations. We study the Hubble horizon and the future event horizon as IR cutoffs, and investigate the cosmological consequences of this model. We also extend our study to the case where dark matter (DM) and dark energy (DE) interact with each other. We observe that Barrow exponent $δ$ significantly affects the cosmological behavior of HDE, and in particular the equation of state (EoS) parameter can cross the phantom line $(w_{de}<-1)$. Also adding $δ$ remarkably affects the deceleration parameter, and shifts the time of universe phase transition.
description: 8 pages, 11 figures, two columns format