cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Gaussian approximation for rooted edges in a random minimal directed spanning tree
Creators: name: Bhattacharjee, Chinmoy
Publisher: name: arXiv
Year: 2021
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60F05, 60D05

description: We study the total $α$-powered length of the rooted edges in a random minimal directed spanning tree - first introduced in Bhatt and Roy (2004) - on a Poisson process with intensity $s \ge 1$ on the unit cube $[0,1]^d$ for $d \ge 3$. While a Dickman limit was proved in Penrose and Wade (2004) in the case of $d=2$, in dimensions three and higher, Bai, Lee and Penrose (2006) showed a Gaussian central limit theorem when $α=1$, with a rate of convergence of the order $(\log s)^{-(d-2)/4} (\log \log s)^{(d+1)/2}$. In this paper, we extend these results and prove a central limit theorem in any dimension $d \ge 3$ for any $α>0$. Moreover, making use of recent results in Stein's method for region-stabilizing functionals, we provide presumably optimal non-asymptotic bounds of the order $(\log s)^{-(d-2)/2}$ on the Wasserstein and the Kolmogorov distances between the distribution of the total $α$-powered length of rooted edges, suitably normalized, and that of a standard Gaussian random variable.
description: Updated conditions in Theorem 2.1, slightly updated Lemma 4.3, final version
Automatic reconstruction of fault networks from seismicity catalogs including location uncertainty
Creators: name: Wang, Yaming
name: Ouillon, Guy
name: Woessner, Jochen
name: Sornette, Didier
name: Husen, Stephan
Publisher: name: arXiv
Year: 2013
Subjects: subject: Geophysics (physics.geo-ph)
subject: FOS: Physical sciences

description: We introduce the Anisotropic Clustering of Location Uncertainty Distributions (ACLUD) method to reconstruct active fault networks on the basis of both earthquake locations and their estimated individual uncertainties. After a massive search through the large solution space of possible reconstructed fault networks, we apply six different validation procedures in order to select the corresponding best fault network. Two of the validation steps (cross-validation and Bayesian Information Criterion (BIC) process the fit residuals, while the four others look for solutions that provide the best agreement with independently observed focal mechanisms. Tests on synthetic catalogs allow us to qualify the performance of the fitting method and of the various validation procedures. The ACLUD method is able to provide solutions that are close to the expected ones, especially for the BIC and focal mechanismbased techniques. The clustering method complemented by the validation step based on focal mechanisms provides good solutions even in the presence of a significant spatial background seismicity rate. Our new fault reconstruction method is then applied to the Landers area in Southern California and compared with previous clustering methods. The results stress the importance of taking into account undersampled sub-fault structures as well as of the spatially inhomogeneous location uncertainties.
description: 36 pages, 17 figures
Feasibility guidelines for kaonic-atom experiments with ultra-high-resolution X-ray spectrometry
Creators: name: Friedman, E.
name: Okada, S.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Nuclear Theory (nucl-th)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Recent studies of strong interaction effects in kaonic atoms suggest that analysing so-called `lower' and `upper' levels in the same atom could separate one-nucleon absorption from multinucleon processes. The present work examines the feasibility of direct measurements of upper level widths in addition to lower level widths in future experiments, using superconducting microcalorimeter detectors. About ten elements are identified as possible candidates for such experiments, all of medium-weight and heavy nuclei. New experiments focused on achieving good accuracy for widths of such pairs of levels could contribute significantly to our knowledge of the $K^-$-nucleon interaction in the nuclear medium.
description: 13 pages, 5 figures, v2 -- table 1 added to introduction, To appear in Nucl. Phys. A
The LOFT contribution to GRB science
Creators: name: Amati, L.
name: Del Monte, E.
name: D'Elia, V.
name: Gendre, B.
name: Salvaterra, R.
name: Stratta, G.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: LOFT is a satellite mission currently in Assessment Phase for the ESA M3 selection. The payload is composed of the Large Area Detector (LAD), with 2-50 keV energy band, a peak effective area of about 10 m2 and an energy resolution better than 260 eV, and the Wide Field Monitor (WFM), a coded mask imager with a FOV of several steradians, an energy resolution of about 300 eV and a point source location accuracy of 1 arcmin in the 2-30 keV energy range. Based on preliminary considerations and estimates, we show how the scientific performances of the WFM are particularly suited to investigate some of the most relevant open issues in the study of GRBs: the physics of the prompt emission, the spectral absorption features by circum-burst material (and hence the nature of the progenitors), the population and properties of XRFs, and the detection and rate of high-z GRBs. Measurements of the early afterglow emission with the Large Area Detector (LAD) may also be possible depending on the mission slewing capabilities and TOO observations policy. More refined analysis and simulations are in progress.
description: 5 pages, 1 Table, 3 Figures, accepted for pubblication in Nuclear Physics B - Proc. Suppl. as a contribution to the "9th Workshop on Science with the New Generation of High Energy Gamma-ray Experiments" (Lecce, Italy, June 20-22 2013)
Relaxation of Warped Disks: the Case of Pure Hydrodynamics
Creators: name: Sorathia, Kareem A.
name: Krolik, Julian H.
name: Hawley, John F.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Orbiting disks may exhibit bends due to a misalignment between the angular momentum of the inner and outer regions of the disk. We begin a systematic simulational inquiry into the physics of warped disks with the simplest case: the relaxation of an unforced warp under pure fluid dynamics, i.e. with no internal stresses other than Reynolds stress. We focus on the nonlinear regime in which the bend rate is large compared to the disk aspect ratio. When warps are nonlinear, strong radial pressure gradients drive transonic radial motions along the disk's top and bottom surfaces that efficiently mix angular momentum. The resulting nonlinear decay rate of the warp increases with the warp rate and the warp width, but, at least in the parameter regime studied here, is independent of the sound speed. The characteristic magnitude of the associated angular momentum fluxes likewise increases with both the local warp rate and the radial range over which the warp extends; it also increases with increasing sound speed, but more slowly than linearly. The angular momentum fluxes respond to the warp rate after a delay that scales with the square-root of the time for sound waves to cross the radial extent of the warp. These behaviors are at variance with a number of the assumptions commonly used in analytic models to describe linear warp dynamics.
description: 38 pages, 13 figures
The truncated moment problem on the union of parallel lines
Creators: name: Zalar, Aljaž
Publisher: name: arXiv
Year: 2021
Subjects: subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: Primary 44A60, 47A57, 47A20, Secondary 15A04, 47N40

description: In this article we study the bivariate truncated moment problem (TMP) of degree $2k$ on the union of parallel lines. First we present an alternative proof of Fialkow's solution \cite{Fia15} to the TMP on the union of two parallel lines (TMP--2pl) using the solution of the truncated Hamburger moment problem (THMP). We add a new equivalent solvability condition, which is then used together with the THMP, to solve the TMP on the union of three parallel lines (TMP--3pl), our second main result of the article. Finally, we establish a sufficient condition for the existence of a solution to the TMP on the union of $n$ parallel lines in the pure case, i.e.\ when the moment matrix $M_k$ is of the highest possible rank, or equivalently the only column relations come from the union of $n$ lines. The condition is based on the feasibility of a certain linear matrix inequality, corresponding to the extension of $M_k$ by adding rows and columns indexed by some monomials of degree $k+1$. The proof is by induction on $n$, where $n\geq 2$ and for the base of induction $n=2$ we use the solution of the TMP--2pl.
description: 44 pages; To appear in Linear Algebra and Its Applications
The Strength and Detectability of the YORP Effect in Near-Earth Asteroids: A Statistical Approach
Creators: name: Rozitis, Ben
name: Green, Simon F.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: In addition to collisions and gravitational forces, it is now becoming widely acknowledged that photon recoil forces and torques from the asymmetric reflection and thermal re-radiation of sunlight are primary mechanisms that govern the rotational evolution of an asteroid. The Yarkovsky-O'Keefe-Radzievskii-Paddack (YORP) effect causes changes in the rotation rate and pole direction of an irregularly shaped asteroid. We present a simple Monte Carlo method to estimate the range of YORP-rotational-accelerations acting on a near-Earth asteroid (NEA) without knowledge of its detailed shape, and to estimate its detectability using light-curve observations. The method requires knowledge of an asteroid's orbital properties and size, and assumes that the future observational circumstances of an asteroid have already been thought through. It is verified by application to the observational circumstances of the seven YORP-investigated asteroids, and is then applied to 540 NEAs with NEOWISE and/or other diameter measurements, and to all NEAs using MPCORB absolute magnitudes. The YORP-detectability is found to be a strong function of the combined asteroid orbital and diameter properties, and is independent of the rotation period for NEAs that don't have very fast or slow rotation rates. The median and 1-sigma spread of YORP-rotational-acceleration expected to be acting on a particular NEA can be estimated from its semimajor axis, eccentricity, and diameter by using (eq. 1) and/or by using (eq. 2) if the diameter is instead estimated from the absolute magnitude by assuming a geometric albedo of 0.1. The length of a light-curve observational campaign required to achieve a 50 per cent probability of detecting the YORP effect in a particular NEA can be estimated by using (eq. 3) and/or by using (eq. 4) for an absolute-magnitude-estimated diameter.
description: 26 pages, 8 figures, 3 tables. Accepted by MNRAS
Black hole remnants are not too fast to be dark matter
Creators: name: Lehmann, Benjamin V.
name: Profumo, Stefano
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We comment on recent claims that recoil in the final stages of Hawking evaporation gives black hole remnants large velocities, rendering them inviable as a dark matter candidate. We point out that due to cosmic expansion, such large velocities at the final stages of evaporation are not in tension with the cold dark matter paradigm so long as they are attained at sufficiently early times. In particular, the predicted recoil velocities are robustly compatible with observations if the remnants form before the epoch of big bang nucleosynthesis, a requirement which is already imposed by the physics of nucleosynthesis itself.
description: 1.5 pages + references
Fluid dynamics of bacterial turbulence
Creators: name: Dunkel, Jörn
name: Heidenreich, Sebastian
name: Drescher, Knut
name: Wensink, Henricus H.
name: Bär, Markus
name: Goldstein, Raymond E.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Biological Physics (physics.bio-ph)
subject: Quantitative Methods (q-bio.QM)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: Self-sustained turbulent structures have been observed in a wide range of living fluids, yet no quantitative theory exists to explain their properties. We report experiments on active turbulence in highly concentrated 3D suspensions of Bacillus subtilis and compare them with a minimal fourth-order vector-field theory for incompressible bacterial dynamics. Velocimetry of bacteria and surrounding fluid, determined by imaging cells and tracking colloidal tracers, yields consistent results for velocity statistics and correlations over two orders of magnitude in kinetic energy, revealing a decrease of fluid memory with increasing swimming activity and linear scaling between energy and enstrophy. The best-fit model parameters allow for quantitative agreement with experimental data.
description: 5 pages, 4 figures
Hanbury Brown and Twiss interferometry at a free-electron laser
Creators: name: Singer, A.
name: Lorenz, U.
name: Sorgenfrei, F.
name: Gerasimova, N.
name: Gulden, J.
name: Yefanov, O. M.
name: Kurta, R. P.
name: Shabalin, A.
name: Dronyak, R.
name: Treusch, R.
name: Kocharyan, V.
name: Weckert, E.
name: Wurth, W.
name: Vartanyants, I. A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We present measurements of second- and higher-order intensity correlation functions (so-called Hanbury Brown and Twiss experiment) performed at the free-electron laser (FEL) FLASH in the non-linear regime of its operation. We demonstrate the high transverse coherence properties of the FEL beam with a degree of transverse coherence of about 80% and degeneracy parameter of the order 10^9 that makes it similar to laser sources. Intensity correlation measurements in spatial and frequency domain gave an estimate of the FEL average pulse duration of 50 fs. Our measurements of the higher-order correlation functions indicate that FEL radiation obeys Gaussian statistics, which is characteristic to chaotic sources.
description: 19 pages, 6 figures, 1 table, 40 references
Void Statistics and Hierarchical Scaling in the Halo Model
Creators: name: Fry, J. N.
name: Colombi, S.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We study scaling behaviour of statistics of voids in the context of the halo model of nonlinear large-scale structure. The halo model allows us to understand why the observed galaxy void probability obeys hierarchical scaling, even though the premise from which the scaling is derived is not satisfied. We argue that the commonly observed negative binomial scaling is not fundamental, but merely the result of the specific values of bias and number density for typical galaxies. The model implies quantitative relations between void statistics measured for two populations of galaxies, such as SDSS red and blue galaxies, and their number density and bias.
description: 11 pages, 11 figures, accepted for publication in MNRAS
Unconventional short-range structural fluctuations in cuprate high-$T_c$ superconductors
Creators: name: Pelc, D.
name: Spieker, R. J.
name: Anderson, Z. W.
name: Krogstad, M. J.
name: Biniskos, N.
name: Bielinski, N. G.
name: Yu, B.
name: Sasagawa, T.
name: Chauviere, L.
name: Dosanjh, P.
name: Liang, R.
name: Bonn, D. A.
name: Damascelli, A.
name: Chi, S.
name: Liu, Y.
name: Osborn, R.
name: Greven, M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The interplay between structural and electronic degrees of freedom in complex materials is the subject of extensive debate in physics and materials science. Particularly interesting questions pertain to the nature and extent of pre-transitional short-range order in diverse systems ranging from shape-memory alloys to unconventional superconductors, and how this microstructure affects macroscopic properties. Here we use neutron and X-ray diffuse scattering to uncover universal structural fluctuations in La$_{2-x}$Sr$_x$CuO$_4$ and Tl$_2$Ba$_2$CuO$_{6+δ}$, two cuprate superconductors with distinct point disorder effects and optimal superconducting transition temperatures. The fluctuations are present in wide doping and temperature ranges, including compositions that maintain high average structural symmetry, and they exhibit unusual, yet simple scaling behavior. The scaling regime is robust and universal, similar to the well-known critical fluctuations close to second-order phase transitions, but with a distinctly different physical origin. We relate this behavior to pre-transitional phenomena in a broad class of systems with structural and magnetic transitions, and propose an explanation based on rare structural fluctuations caused by intrinsic nanoscale inhomogeneity. We also uncover parallels with superconducting fluctuations, which indicates that the underlying inhomogeneity plays an important role in cuprate physics.
description: 24 pages, 4 figures
Wheeler-De Witt equation and AdS/CFT correspondence
Creators: name: Cianfrani, Francesco
name: Kowalski-Glikman, Jerzy
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The radial Wheeler--De Witt equation on the asymptotically AdS spacetime proposed in [9] has as its semiclassical solution the wave function that asymptotically satisfies the conformal Ward identity, exemplifying the AdS/CFT correspondence. In this paper we show that this results holds also in the case of a complete quantum solution of the radial Wheeler--De Witt equation. It turns out that if the wavefunction is expanded in the parameter $ρ$ with $ρ\rightarrow0$ defines the asymptotic boundary of the spacetime, the quantum loop corrections to the semiclassical wave are of subleading order.
description: 8 pages, accepted for publication in Phys. Lett. B
Calibration of Human Driving Behavior and Preference Using Naturalistic Traffic Data
Creators: name: Dai, Qi
name: Shen, Di
name: Wang, Jinhong
name: Huang, Suzhou
name: Filev, Dimitar
Publisher: name: arXiv
Year: 2021
Subjects: subject: Multiagent Systems (cs.MA)
subject: Artificial Intelligence (cs.AI)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Understanding human driving behaviors quantitatively is critical even in the era when connected and autonomous vehicles and smart infrastructure are becoming ever more prevalent. This is particularly so as that mixed traffic settings, where autonomous vehicles and human driven vehicles co-exist, are expected to persist for quite some time. Towards this end it is necessary that we have a comprehensive modeling framework for decision-making within which human driving preferences can be inferred statistically from observed driving behaviors in realistic and naturalistic traffic settings. Leveraging a recently proposed computational framework for smart vehicles in a smart world using multi-agent based simulation and optimization, we first recapitulate how the forward problem of driving decision-making is modeled as a state space model. We then show how the model can be inverted to estimate driver preferences from naturalistic traffic data using the standard Kalman filter technique. We explicitly illustrate our approach using the vehicle trajectory data from Sugiyama experiment that was originally meant to demonstrate how stop-and-go shockwave can arise spontaneously without bottlenecks. Not only the estimated state filter can fit the observed data well for each individual vehicle, the inferred utility functions can also re-produce quantitatively similar pattern of the observed collective behaviors. One distinct advantage of our approach is the drastically reduced computational burden. This is possible because our forward model treats driving decision process, which is intrinsically dynamic with multi-agent interactions, as a sequence of independent static optimization problems contingent on the state with a finite look ahead anticipation. Consequently we can practically sidestep solving an interacting dynamic inversion problem that would have been much more computationally demanding.
A Note on the Field-Theoretical Description of Superfluids
Creators: name: Andrianopoli, L.
name: D'Auria, R.
name: Grassi, P. A.
name: Trigiante, M.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Recently, a Lagrangian description of superfluids attracted some interest from the fluid/gravity-correspondence viewpoint. In this respect, the work of Dubovksy et al. has proposed a new field theoretical description of fluids, which has several interesting aspects. On another side, we have provided in arXiv:1304.2206 a supersymmetric extension of the original works. In the analysis of the Lagrangian structures a new invariant appeared which, although related to known invariants, provides, in our opinion, a better parametrisation of the fluid dynamics in order to describe the fluid/superfluid phases.
description: LaTeX2e, 9 pages, no figures
Unfaire Latein-Kritik
Creators: name: Wirth, Theo
Publisher: name: Pegasus-Onlinezeitschrift
Year: 2017

description: Theo Wirth (Zürich) greift in seinem Artikel die Kritik von Elsbeth Stern auf, die behauptet, dass der Lateinunterricht bei dem Erwerb weiterer Fremdsprachen nicht hilfreich und auch aus einigen weiteren Gründen nutzlos sei. Wirth versucht dies zu widerlegen und wirbt vielmehr für eine engere Zusammenarbeit der verschiedenen Sprachfächer.
description: Pegasus-Onlinezeitschrift, Bd. 11, Nr. 1: Pegasus-Onlinezeitschrift
William Fynderne, d. 1444, & Wife Elizabeth Kyngeston - Childrey, St. Mary's, Berkshire
Creators: name: Lamp, Reinhard
Publisher: name: Pegasus-Onlinezeitschrift
Year: 2017

description: Reinhard Lamp (Hamburg) offers a detailed description, analysis and interpretation of a sepulchral brass with Latin inscriptions from Berkshire, UK. Starting from the rubbing of the brass, the author explains the graphical and linguistic difficulties of the 15th c. inscriptions and depicts the stylistic composition of the text in its historical context.
description: Pegasus-Onlinezeitschrift, Bd. 11, Nr. 1: Pegasus-Onlinezeitschrift
A review of Artificial Intelligence and Robotics
Creators: name: Al Mamun, Al Mahmud
Publisher: name: figshare
Year: 2021
Subjects: subject: 80101 Adaptive Agents and Intelligent Robotics
subject: FOS: Computer and information sciences

description: Artificial Intelligence and Robotics are the key technologies in our modern world. From the Greek myths, humans have many questions and are thinking about the issues of artificial intelligence and robotics. From the 20th century, artificial intelligence, robotics, and artificially intelligent robots became very popular. Many science fiction books reveal a future view of robots and artificial intelligence. Nowadays in film, artificial intelligence and robotics are very conventional issues. But, we still have many confusions and questions! “What is a robot?” “What is robotics?”, “What is artificial intelligence?” “What is an artificially intelligent robot?” “What will be our future?” “Will robotics be harmful to humans in the future?” “What are the laws of robotics?” In this writing, I would like to represent a basic view and my opinion on the robot, robotics, artificial intelligence, and artificially intelligent robot.
A Deep Learning Study on Osteosarcoma Detection from Histological Images
Creators: name: Anisuzzaman, D M
name: Barzekar, Hosein
name: Tong, Ling
name: Luo, Jake
name: Yu, Zeyun
Publisher: name: arXiv
Year: 2020
Subjects: subject: Image and Video Processing (eess.IV)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: In the U.S, 5-10\% of new pediatric cases of cancer are primary bone tumors. The most common type of primary malignant bone tumor is osteosarcoma. The intention of the present work is to improve the detection and diagnosis of osteosarcoma using computer-aided detection (CAD) and diagnosis (CADx). Such tools as convolutional neural networks (CNNs) can significantly decrease the surgeon's workload and make a better prognosis of patient conditions. CNNs need to be trained on a large amount of data in order to achieve a more trustworthy performance. In this study, transfer learning techniques, pre-trained CNNs, are adapted to a public dataset on osteosarcoma histological images to detect necrotic images from non-necrotic and healthy tissues. First, the dataset was preprocessed, and different classifications are applied. Then, Transfer learning models including VGG19 and Inception V3 are used and trained on Whole Slide Images (WSI) with no patches, to improve the accuracy of the outputs. Finally, the models are applied to different classification problems, including binary and multi-class classifiers. Experimental results show that the accuracy of the VGG19 has the highest, 96\%, performance amongst all binary classes and multiclass classification. Our fine-tuned model demonstrates state-of-the-art performance on detecting malignancy of Osteosarcoma based on histologic images.
Does Hand-Dominance Matter in Non-Standard Visuomotor Transformations?
Creators: name: Jones, Briasha D.
name: Van Gemmert, Arend W. A.
name: Dalecki, Marc
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Neuroscience
subject: Physiology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences

description: Previous nonstandard visuomotor transformation studies using variations of eye-hand coupling and decoupling tasks focused on dominant hand use. The present study expanded this work by including the non-dominant hand. Twenty-four right-hand dominant adults (M = 21 yrs.; 12 females) slid their index finger along a vertical or horizontal touchscreen to move a cursor that was always displayed in the vertical plane. In four different action-perception conditions, the finger and cursor moved either in the same plane and direction or in the other plane and/or opposite direction. Performance differed between the hands only for movement trajectory related variables but not for endpoint related measures. Across conditions the initial direction error was larger when performing with the non-dominant hand (p
Fundamental bound on the reliability of quantum information transmission
Creators: name: Sharma, Naresh
name: Warsi, Naqueeb Ahmad
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: Information Theory (cs.IT)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Information theory tells us that if the rate of sending information across a noisy channel were above the capacity of that channel, then the transmission would necessarily be unreliable. For classical information sent over classical or quantum channels, one could, under certain conditions, make a stronger statement that the reliability of the transmission shall decay exponentially to zero with the number of channel uses and the proof of this statement typically relies on a certain fundamental bound on the reliability of the transmission. Such a statement or the bound has never been given for sending quantum information. We give this bound and then use it to give the first example where the reliability of sending quantum information at rates above the capacity decays exponentially to zero. We also show that our framework can be used for proving generalized bounds on the reliability.
description: This paper (6 pages, no figures) is a compact version of arXiv:1205.1712
There and Back Again: Self-supervised Multispectral Correspondence Estimation
Creators: name: Walters, Celyn
name: Mendez, Oscar
name: Johnson, Mark
name: Bowden, Richard
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Across a wide range of applications, from autonomous vehicles to medical imaging, multi-spectral images provide an opportunity to extract additional information not present in color images. One of the most important steps in making this information readily available is the accurate estimation of dense correspondences between different spectra. Due to the nature of cross-spectral images, most correspondence solving techniques for the visual domain are simply not applicable. Furthermore, most cross-spectral techniques utilize spectra-specific characteristics to perform the alignment. In this work, we aim to address the dense correspondence estimation problem in a way that generalizes to more than one spectrum. We do this by introducing a novel cycle-consistency metric that allows us to self-supervise. This, combined with our spectra-agnostic loss functions, allows us to train the same network across multiple spectra. We demonstrate our approach on the challenging task of dense RGB-FIR correspondence estimation. We also show the performance of our unmodified network on the cases of RGB-NIR and RGB-RGB, where we achieve higher accuracy than similar self-supervised approaches. Our work shows that cross-spectral correspondence estimation can be solved in a common framework that learns to generalize alignment across spectra.
description: To be published in IEEE/RSJ International Conference on Robot and Automation (ICRA) 2021
Generalized infinite factorization models
Creators: name: Schiavon, Lorenzo
name: Canale, Antonio
name: Dunson, David B.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Methodology (stat.ME)
subject: FOS: Computer and information sciences

description: Factorization models express a statistical object of interest in terms of a collection of simpler objects. For example, a matrix or tensor can be expressed as a sum of rank-one components. However, in practice, it can be challenging to infer the relative impact of the different components as well as the number of components. A popular idea is to include infinitely many components having impact decreasing with the component index. This article is motivated by two limitations of existing methods: (1) lack of careful consideration of the within component sparsity structure; and (2) no accommodation for grouped variables and other non-exchangeable structures. We propose a general class of infinite factorization models that address these limitations. Theoretical support is provided, practical gains are shown in simulation studies, and an ecology application focusing on modelling bird species occurrence is discussed.
Most Cantor sets in $\mathbb R^N$ are in general position with respect to all projections
Creators: name: Frolkina, Olga
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Topology (math.GN)
subject: Geometric Topology (math.GT)
subject: FOS: Mathematics
subject: 54B20 (Primary) 54E52, 54C25, 46C05 (Secondary)

description: We prove the theorem stated in the title. This answers a question of John Cobb (1994). We also consider the case of the Hilbert space $\ell _2$.
description: 10 pages, no figures
The magnetic field induced phase separation in a model of a superconductor with local electron pairing
Creators: name: Kapcia, Konrad
name: Robaszkiewicz, Stanisław
Publisher: name: arXiv
Year: 2012
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We have studied the extended Hubbard model with pair hopping in the atomic limit for arbitrary electron density and chemical potential and focus on paramagnetic effects of the external magnetic field. The Hamiltonian considered consists of (i) the effective on-site interaction U and (ii) the intersite charge exchange interactions I, determining the hopping of electron pairs between nearest-neighbour sites. The phase diagrams and thermodynamic properties of this model have been determined within the variational approach (VA), which treats the on-site interaction term exactly and the intersite interactions within the mean-field approximation. Our investigation of the general case shows that the system can exhibit not only the homogeneous phases: superconducting (SS) and nonordered (NO), but also the phase separated states (PS: SS-NO). Depending on the values of interaction parameters, the PS state can occur in higher fields than the SS phase (field-induced PS). Some ground state results beyond the VA are also presented.
description: 9 pages, 6 figures, 1 table; pdf-ReVTeX; This is an author-created, un-copyedited version of an article accepted for publication in Journal of Physics: Condensed Matter. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. arXiv admin note: substantial text overlap with arXiv:1203.5805
Relativistic Viscous Hydrodynamics with Angular Momentum
Creators: name: She, Duan
name: Huang, Anping
name: Hou, Defu
name: Liao, Jinfeng
Publisher: name: arXiv
Year: 2021
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Hydrodynamics is a general theoretical framework for describing the long-time large-distance behaviors of various macroscopic physical systems, with its equations based on conservation laws such as energy-momentum conservation and charge conservation. Recently there has been significant interest in understanding the implications of angular momentum conservation for a corresponding hydrodynamic theory. In this work, we examine the key conceptual issues for such a theory in the relativistic regime where the orbital and spin components get entangled. We derive the equations for relativistic viscous hydrodynamics with angular momentum through Navier-Stokes type of gradient expansion analysis and find five new transport coefficients for angular momentum diffusion modes.
Vorgeschichtliche Gewebe aus dem Hallstätter Salzberg
Creators: name: Hundt, Hans-Jürgen
Publisher: name: Verlag des Römisch-Germanischen Zentralmuseums Mainz
Year: 2017
Subjects: Eisenzeit; Mitteleuropa; Österreich; Hallstatt; Textilien; Bergbau; Salz

description: [nicht vorhanden / not available]
description: Jahrbuch des Römisch-Germanischen Zentralmuseums Mainz, Bd. 7 (1960)
A deuterated liquid scintillator for supernova neutrino detection
Creators: name: Chauhan, Bhavesh
name: Dasgupta, Basudeb
name: Datar, Vivek
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: For the next galactic supernova, operational neutrino telescopes will measure the neutrino flux several hours before their optical counterparts. Existing detectors, relying mostly on charged current interactions, are mostly sensitive to $\barν_e$ and to a lesser extent to $ν_e$. In order to measure the flux of other flavors ($ν_μ,\barν_μ,ν_τ,\text{and}~\barν_τ$), we need to observe their neutral current interactions with the detector. Such a measurement is not only crucial for overall normalization of the supernova neutrino flux but also for understanding the intricate neutrino oscillation physics. A deuterium based detector will be sensitive to all neutrino flavors. In this paper, we propose a 1 kton deuterated liquid scintillator (DLS) based detector that will see about 435 neutral current events and 170 (108) charged current $ν_e$ ($\barν_e$) events from a fiducial supernova at a distance of 10 kpc from Earth. We explore the possibility of extracting spectral information from the neutral current channel $\overset{\scriptscriptstyle(-)}ν d \rightarrow \overset{\scriptscriptstyle(-)}νnp$ by measuring the quenched kinetic energy of the proton in the final state, where the neutron in the final state is tagged and used to reduce backgrounds. We also discuss the secondary interactions of the recoil neutrons in the detector.
description: 37 pages, 13 figures; expanded discussion on secondary interactions
Bronzener Silenskopf von der Lehne eines Römischen Bettes
Creators: name: Diehl, Erika
Publisher: name: Verlag des Römisch-Germanischen Zentralmuseums Mainz
Year: 2017
Subjects: Römerzeit; Möbel; bildliche Darstellungen; Gesichtsdarstellungen

description: [nicht vorhanden / not available]
description: Jahrbuch des Römisch-Germanischen Zentralmuseums Mainz, Bd. 7 (1960)
Device-Independent Test for Genuine Multipartite Entanglement
Creators: name: Gabriel, A.
name: Rudnicki, Ł.
name: Hiesmayr, B. C.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We investigate a-priori detection probabilities of genuine multipartite entanglement (GME). Even if one does not have knowledge about the basis in which a state is produced by a source, how a channel decoheres it or about the very working of the detectors used, we find that it is possible to detect GME with reasonably high probability in a feasible fashion. We show that by means of certain separability criteria, GME can be detected in a measurement-device-independent way. Our method provides several applications whenever e.g. state tomography is not possible or too demanding, and is a tool to investigate security issues in multi-particle quantum cryptographical protocols.
description: 9 pages, 4 figures
Jordanian deformation of the open sl(2) Gaudin model
Creators: name: António, N. Cirilo
name: Manojlović, N.
name: Nagy, Z.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: High Energy Physics - Theory (hep-th)
subject: Quantum Algebra (math.QA)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We derive the deformed sl(2) Gaudin model with integrable boundaries. Starting from the Jordanian deformation of the SL(2)-invariant Yang R-matrix and generic solutions of the associated reflection equation and the dual reflection equation, the corresponding inhomogeneous spin-1/2 XXX chain is obtained. The quasi-classical expansion of the transfer matrix yields the deformed sl(2) Gaudin Hamiltonians with boundary terms.
description: 15 pages. arXiv admin note: substantial text overlap with arXiv:1303.2481
Extended Conformal Symmetry and Recursion Formulae for Nekrasov Partition Function
Creators: name: Kanno, Shoichi
name: Matsuo, Yutaka
name: Zhang, Hong
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We derive an infinite set of recursion formulae for Nekrasov instanton partition function for linear quiver U(N) supersymmetric gauge theories in 4D. They have a structure of a deformed version of W_{1+\infty} algebra which is called SH^c algebra (or degenerate double affine Hecke algebra) in the literature. The algebra contains W_N algebra with general central charge defined by a parameter β, which gives the $Ω$ background in Nekrasov's analysis. Some parts of the formulae are identified with the conformal Ward identity for the conformal block function of Toda field theory.
description: 21 pages, 3 figures; v2: minor modifications, typos corrected, references added; v3: references added, typos corrected; v4: major revision of section 6, to be published in JHEP
WASP-8b: Characterization of a Cool and Eccentric Exoplanet with Spitzer
Creators: name: Cubillos, Patricio
name: Harrington, Joseph
name: Madhusudhan, Nikku
name: Stevenson, Kevin B.
name: Hardy, Ryan A.
name: Blecic, Jasmina
name: Anderson, David R.
name: Hardin, Matthew
name: Campo, Christopher J.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: WASP-8b has 2.18 times Jupiter's mass and is on an eccentric ($e=0.31$) 8.16-day orbit. With a time-averaged equilibrium temperature of 948 K, it is one of the least-irradiated hot Jupiters observed with the Spitzer Space Telescope. We have analyzed six photometric light curves of WASP-8b during secondary eclipse observed in the 3.6, 4.5, and 8.0 {\microns} Infrared Array Camera bands. The eclipse depths are $0.113\pm 0.018$%, $0.069\pm 0.007$%, and $0.093\pm 0.023$%, respectively, giving respective brightness temperatures of 1552, 1131, and 938 K. We characterized the atmospheric thermal profile and composition of the planet using a line-by-line radiative transfer code and a Markov-chain Monte Carlo sampler. The data indicated no thermal inversion, independently of any assumption about chemical composition. We noted an anomalously high 3.6-{\microns} brightness temperature (1552 K); by modeling the eccentricity-caused thermal variation, we found that this temperature is plausible for radiative time scales less than $\sim 10^{2}$ hours. However, as no model spectra fit all three data points well, the temperature discrepancy remains as an open question.
description: 12 pages, 9 figures, accepted for publication in ApJ
Scaling of the entanglement spectrum near quantum phase transitions
Creators: name: Lepori, L.
name: De Chiara, G.
name: Sanpera, A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Other Condensed Matter (cond-mat.other)
subject: Superconductivity (cond-mat.supr-con)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The entanglement spectrum describing quantum correlations in many-body systems has been recently recognized as a key tool to characterize different quantum phases, including topological ones. Here we derive its analytically scaling properties in the vicinity of some integrable quantum phase transitions and extend our studies also to non integrable quantum phase transitions in one dimensional spin models numerically. Our analysis shows that, in all studied cases, the scaling of the difference between the two largest non degenerate Schmidt eigenvalues yields with good accuracy critical points and mass scaling exponents.
Zur Archäologie und Geschichte Südwestdeutschlands im 3. bis 5. Jahrhundert n. Chr.
Creators: name: Roeren, Robert
Publisher: name: Verlag des Römisch-Germanischen Zentralmuseums Mainz
Year: 2017
Subjects: Römerzeit; Völkerwanderungszeit; Deutschland; Depotfunde; Münzschätze; Grabfunde; Siedlungsfunde

description: [nicht vorhanden / not available]
description: Jahrbuch des Römisch-Germanischen Zentralmuseums Mainz, Bd. 7 (1960)
The Bayesian Spatial Bradley--Terry Model: Urban Deprivation Modeling in Tanzania
Creators: name: Seymour, R. G.
name: Sirl, D.
name: Preston, S.
name: Dryden, I. L.
name: Ellis, M. J. A.
name: Perrat, B.
name: Goulding, J.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Applications (stat.AP)
subject: Computation (stat.CO)
subject: Methodology (stat.ME)
subject: FOS: Computer and information sciences
subject: 62G05 (Primary) 62P25, 62-11 (Secondary)

description: Identifying the most deprived regions of any country or city is key if policy makers are to design successful interventions. However, locating areas with the greatest need is often surprisingly challenging in developing countries. Due to the logistical challenges of traditional household surveying, official statistics can be slow to be updated; estimates that exist can be coarse, a consequence of prohibitive costs and poor infrastructures; and mass urbanisation can render manually surveyed figures rapidly out-of-date. Comparative judgement models, such as the Bradley--Terry model, offer a promising solution. Leveraging local knowledge, elicited via comparisons of different areas' affluence, such models can both simplify logistics and circumvent biases inherent to house-hold surveys. Yet widespread adoption remains limited, due to the large amount of data existing approaches still require. We address this via development of a novel Bayesian Spatial Bradley--Terry model, which substantially decreases the amount of data comparisons required for effective inference. This model integrates a network representation of the city or country, along with assumptions of spatial smoothness that allow deprivation in one area to be informed by neighbouring areas. We demonstrate the practical effectiveness of this method, through a novel comparative judgement data set collected in Dar es Salaam, Tanzania.
description: 23 pages, 7 figures, to be published in the journal of the Royal Statistical Society: Series C
Lyrik und Performance – Catull c. 51 im Lateinunterricht
Creators: name: Humar, Marcel
Publisher: name: Pegasus-Onlinezeitschrift
Year: 2017

description: Marcel Humar behandelt in seinem Artikel „Lyrik und Performance – Catull c. 51 im Lateinunterricht“ Interpretationsmöglichkeiten dieses zu den Lesbia-Gedichten gehörenden Stückes Catulls, dessen Werke sich im Lateinunterricht zunehmender Beliebtheit erfreuen. Welche Schwerpunkte bei der Behandlung dieses Gedichtes – unter Berücksichtigung der von Sappho stammenden Vorlage – thematisiert werden müssen, führt er in einem Unterrichtsentwurf näher aus. Dieser basiert im Wesentlichen auf einem Vergleich zu Xavier Naidoos Song „Wo willst du hin?“ unter Betonung der performativen Gestaltungselemente beider lyrischen Werke.
description: Pegasus-Onlinezeitschrift, Bd. 14, Nr. 1: Pegasus-Onlinezeitschrift
Iterative path integral summation for nonequilibrium quantum transport
Creators: name: Weiss, S.
name: Hützen, R.
name: Becker, D.
name: Eckel, J.
name: Egger, R.
name: Thorwart, M.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We have developed a numerically exact approach to compute real-time path integral expressions for quantum transport problems out of equilibrium. The scheme is based on a deterministic iterative summation of the path integral (ISPI) for the generating function of nonequilibrium observables of interest, e.g., the charge current or dynamical quantities of the central part. Self-energies due to the leads, being nonlocal in time, are fully taken into account within a finite memory time, thereby including non-Markovian effects. Numerical results are extra-polated first to vanishing (Trotter) time discretization and, second, to infinite memory time...
description: submitted to Special issue in physica status solidi (b) Quantum transport at the molecular scale
Florilegium: Four Sepulchral Brasses to Civilians
Creators: name: Lamp, Reinhard
Publisher: name: Pegasus-Onlinezeitschrift
Year: 2017

description: Reinhard Lamp continues his series about medieval Latin tomb slabs and effigies in England. In this article he focuses on the description and interpretaion of the effigies of John Asger, Richard Byll, Richard Bartlot and Hugh Bostok. Beside biographical data, the author gives commentaries as well as prosodic and linguistic analyses of the inscriptions. Reinhard Lamp presents a little-known topic with outstanding knowledge of details.
description: Pegasus-Onlinezeitschrift, Bd. 14, Nr. 1: Pegasus-Onlinezeitschrift