cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
More on gapped Goldstones at finite density: More gapped Goldstones
Creators: name: Nicolis, Alberto
name: Penco, Riccardo
name: Piazza, Federico
name: Rosen, Rachel A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Other Condensed Matter (cond-mat.other)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: It was recently argued that certain relativistic theories at finite density can exhibit an unconventional spectrum of Goldstone excitations, with gapped Goldstones whose gap is exactly calculable in terms of the symmetry algebra. We confirm this result as well as previous ones concerning gapless Goldstones for non-relativistic systems via a coset construction of the low-energy effective field theory. Moreover, our analysis unveils additional gapped Goldstones, naturally as light as the others, but this time with a model-dependent gap. Their exact number cannot be inferred solely from the symmetry breaking pattern either, but rather depends on the details of the symmetry breaking mechanism--a statement that we explicitly verify with a number of examples. Along the way we provide what we believe to be a particularly transparent interpretation of the so-called inverse-Higgs constraints for spontaneously broken spacetime symmetries.
description: 50 pages. v2: Fixed several typos in equations. Minor modifications to the counting rule. Acknowledgements and references added. Matches JHEP version
Detection of short-term variability in the Be star ƔCas using SMEI, TESS and the BRITE-Constellation
Creators: name: Borre, Camilla C.
Publisher: name: Zenodo
Year: 2021
Subjects: Stars, Be stars

description: Be stars are B type stars with Balmer emission from a Keplerian decretion disc. It has long been debated how the decretion discs form and there are currently two main contenders. One contender is binary interactions and the other is combinations of non-radial pulsations. In this talk, I show how we use time series analysis of the Be star ƔCas obtained with SMEI, BRITE and TESS to prove the existence of at least four different stellar oscillations over a period of 17 years. Confirmation of non-radial pulsations in yet another Be star gives weight to the argument that the disc can be formed without the need for a companion.
Locality-Sensitive Hashing-Based Efficient Point Transformer with Applications in High-Energy Physics
Creators: name: Miao, Siqi
name: Lu, Zhiyuan
name: Liu, Mia
name: Duarte, Javier
name: Li, Pan
Publisher: name: Zenodo
Year: 2024

description: Here are the processed datasets used in the paper Locality-Sensitive Hashing-Based Efficient Point Transformer with Applications in High-Energy Physics.
Measurement of the g p -> K^0 Sigma^+ reaction with the Crystal Ball/TAPS detectors at the Mainz Microtron
Creators: name: Aguar-Bartolomé, P.
name: Annand, J. R. M.
name: Arends, H. J.
name: Bantawa, K.
name: Beck, R.
name: Bekrenev, V.
name: Berghäuser, H.
name: Braghieri, A.
name: Briscoe, W. J.
name: Brudvik, J.
name: Cherepnya, S.
name: Codling, R. F. B.
name: Collicott, C.
name: Demissie, B.
name: Dieterle, M.
name: Downie, E. J.
name: Drexler, P.
name: Fil'kov, L. V.
name: Fix, A.
name: Glazier, D. I.
name: Gregor, R.
name: Hamilton, D.
name: Heid, E.
name: Hornidge, D.
name: Howdle, D.
name: Isaksson, L.
name: Jaegle, I.
name: Jahn, O.
name: Jude, T. C.
name: Kashevarov, V. L.
name: Keshelashvili, I.
name: Kondratiev, R.
name: Korolija, M.
name: Kotulla, M.
name: Koulbardis, A.
name: Kruglov, S.
name: Krusche, B.
name: Lisin, V.
name: Livingston, K.
name: MacGregor, I. J. D.
name: Maghrbi, Y.
name: Mancel, J.
name: Manley, D. M.
name: McNicoll, E. F.
name: Mekterovic, D.
name: Metag, V.
name: Mushkarenkov, A.
name: Nefkens, B. M. K.
name: Nikolaev, A.
name: Novotny, R.
name: Oberle, M.
name: Ortega, H.
name: Ostrick, M.
name: Ott, P.
name: Otte, P. B.
name: Oussena, B.
name: Pedroni, P.
name: Pheron, F.
name: Polonski, A.
name: Prakhov, S.
name: Robinson, J.
name: Rosner, G.
name: Rostomyan, T.
name: Schumann, S.
name: Sikora, M. H.
name: Sober, D. I.
name: Starostin, A.
name: Strakovsky, I. I.
name: Suarez, I. M.
name: Supek, I.
name: Tarbert, C. M.
name: Thiel, M.
name: Thomas, A.
name: Unverzagt, M.
name: Watts, D. P.
name: Werthmüller, D.
name: Witthauer, L.
name: Zehr., F.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The g p -> K^0 Sigma^+ reaction has been measured from threshold to Eg=1.45 GeV (W_cm=1.9 GeV) using the Crystal Ball and TAPS multiphoton spectrometers together with the photon tagging facility at the Mainz Microtron MAMI. In the present experiment, this reaction was searched for in the 3pi^0 p final state, by assuming K^0_S -> pi^0 pi^0 and Sigma^+ -> pi^0 p. The experimental results include total and differential cross sections as well as the polarization of the recoil hyperon. The new data significantly improve empirical knowledge about the g p -> K^0 Sigma^+ reaction in the measured energy range. The results are compared to previous measurements and model predictions. It is demonstrated that adding the present g p -> K^0 Sigma^+ results to existing data allowed a better description of this reaction with various models.
description: 12 pages, 10 figures, 4 tables
Intermediate to low-mass stellar content of Westerlund 1
Creators: name: Brandner, Wolfgang
name: Clark, J. Simon
name: Stolte, Andrea
name: Waters, Rens
name: Negueruela, Ignacio
name: Goodwin, Simon P.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We have analysed near-infrared NTT/SofI observations of the starburst cluster Westerlund 1, which is among the most massive young clusters in the Milky Way. A comparison of colour-magnitude diagrams with theoretical main-sequence and pre-main sequence evolutionary tracks yields improved extinction and distance estimates of A_Ks = 1.13+-0.03 mag and d = 3.55+-0.17 kpc (DM = 12.75+-0.10 mag). The pre-main sequence population is best fit by a Palla & Stahler isochrone for an age of 3.2 Myr, while the main sequence population is in agreement with a cluster age of 3 to 5 Myr. An analysis of the structural parameters of the cluster yields that the half-mass radius of the cluster population increases towards lower mass, indicative of the presence of mass segregation. The cluster is clearly elongated with an eccentricity of 0.20 for stars with masses between 10 and 32 Msun, and 0.15 for stars with masses in the range 3 to 10 Msun. We derive the slope of the stellar mass function for stars with masses between 3.4 and 27 Msun. In an annulus with radii between 0.75 and 1.5 pc from the cluster centre, we obtain a slope of Gamma = -1.3. Closer in, the mass function of Westerlund 1 is shallower with Gamma = -0.6. The extrapolation of the mass function for stars with masses from 0.08 to 120 Msun yields an initial total stellar mass of ~52,000 Msun, and a present-day mass of 20,000 to 45,000 Msun (about 10 times the stellar mass of the Orion Nebula Cluster, and 2 to 4 times the mass of the NGC 3603 young cluster), indicating that Westerlund 1 is the most massive starburst cluster identified to date in the Milky Way.
description: 15 pages, jpg figures, uses aa.cls and graphicx, accepted for publication in A&A
Local supersymmetry without SUSY partners
Creators: name: Alvarez, Pedro D.
name: Pais, Pablo
name: Zanelli, Jorge
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: A gauge theory for a superalgebra that includes an internal gauge (G) and local Lorentz algebras, and that could describe the low energy particle phenomenology is constructed. These two symmetries are connected by fermionic supercharges. The system includes an internal gauge connection 1-form $A$, a spin-1/2 Dirac spinor $ψ$, the Lorentz connection $ω$, and the vielbein $e$. The connection one-form is in the adjoint representation of G, while $ψ$ is in the fundamental. In contrast to standard supergravity, the metric is not a fundamental field and is in the center of the superalgebra: it is not only invariant under the internal gauge group and under Lorentz transformations, but is also invariant under supersymmetry. The features of this theory that mark the difference with standard supersymmetry are: A) The number of fermionic and bosonic states is not necessarily the same; B) There are no superpartners with equal mass, "bosoninos", sleptons and squarks are absent; C) Although this supersymmetry originates in a local gauge theory and gravity is included, there is no gravitino; D) Fermions acquire mass from their coupling to the background or from self-couplings, while bosons remain massless. In odd dimensions, the Chern-Simons form provides an action that is quasi-invariant under the entire superalgebra. In even dimensions, the Yang-Mills form $ < F *F>$ is the only natural option, and the symmetry breaks down to [G x SO(1,D-1)]. In 4D, the construction follows the Townsend - Mac Dowell-Mansouri approach. Due to the absence of osp(4|2)-invariant traces in four dimensions, the resulting Lagrangian is only invariant under [U(1) x SO(3,1)], and includes a Nambu--Jona-Lasinio term. In this case, the Lagrangian depends on a single dimensionful parameter that fixes Newton's constant, the cosmological constant and the NJL coupling.
description: 24 pages, no figures. Title changed in journal version to "Unconventional supersymmetry and its breaking". Few references added and some paragraphs rewritten from v.1. This version includes two appendices that are not found in the journal version
Color transparency: 33 years and still running
Creators: name: Strikman, Mark
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: I review history of the color transparency (CT) which started with discovery of the $J/ψ$ meson, discovery of high energy CT phenomena and the recent progress in the investigations of CT at intermediate energies.
description: 10 pages, To appear in the proceedings of Workshop on Exclusive Reactions at High Momentum Transfer, Newport News, Virgina, 21-24 May 2007; several references added
Quantization of Hall Conductance For Interacting Electrons on a Torus
Creators: name: Hastings, Matthew B.
name: Michalakis, Spyridon
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 81V70, 82B10, 82B20,

description: We consider interacting, charged spins on a torus described by a gapped Hamiltonian with a unique groundstate and conserved local charge. Using quasi-adiabatic evolution of the groundstate around a flux-torus, we prove, without any averaging assumption, that the Hall conductance of the groundstate is quantized in integer multiples of e^2/h, up to exponentially small corrections in the linear size of the system. In addition, we discuss extensions to the fractional quantization case under an additional topological order assumption on the degenerate groundstate subspace.
description: 28 pages, 4 figures, This paper significantly simplifies the proof and tightens the bounds previously shown in arXiv:0911.4706 by the same authors. Updated to reflect published version
Dialectica Categories for the Lambek Calculus
Creators: name: de Paiva, Valeria
name: Eades, Harley
Publisher: name: arXiv
Year: 2018
Subjects: subject: Logic in Computer Science (cs.LO)
subject: FOS: Computer and information sciences

description: We revisit the old work of de Paiva on the models of the Lambek Calculus in dialectica models making sure that the syntactic details that were sketchy on the first version got completed and verified. We extend the Lambek Calculus with a κmodality, inspired by Yetter's work, which makes the calculus commutative. Then we add the of-course modality !, as Girard did, to re-introduce weakening and contraction for all formulas and get back the full power of intuitionistic and classical logic. We also present the categorical semantics, proved sound and complete. Finally we show the traditional properties of type systems, like subject reduction, the Church-Rosser theorem and normalization for the calculi of extended modalities, which we did not have before.
Phillips symmetric operators and their extensions
Creators: name: Kuzhel, S.
name: Nizhnik, L.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Functional Analysis (math.FA)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 47B25

description: Let $S$ be a symmetric operator with equal defect numbers and let $\mathfrak{U}$ be a set of unitary operators in a Hilbert space $\mathfrak{H}$. The operator $S$ is called $\mathfrak{U}$-invariant if $US=SU$ for all $U\in\mathfrak{U}$. Phillips \cite{PH} constructed an example of $\mathfrak{U}$-invariant symmetric operator $S$ which has no $\mathfrak{U}$-invariant self-adjoint extensions. It was discovered that such symmetric operator has a constant characteristic function \cite{KO}. For this reason, each symmetric operator $S$ with constant characteristic function is called a \emph{Phillips symmetric operator}.
Two-photon processes based on quantum commutators
Creators: name: Fratini, Filippo
name: Safari, Laleh
name: Amaro, Pedro
name: Santos, José-Paulo
Publisher: name: arXiv
Year: 2018
Subjects: subject: Quantum Physics (quant-ph)
subject: Atomic and Molecular Clusters (physics.atm-clus)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We developed a new method to calculate two-photon processes in quantum mechanics that replaces the infinite summation over the intermediate states by a perturbation expansion. This latter consists of a series of commutators that involve position, momentum and hamiltonian quantum operators. We analyzed several single- and many-particle cases for which a closed form solution to the perturbation expansion exists, as well as more complicated cases for which a solution is found by convergence. Throughout the article, Rayleigh and Raman scattering are taken as examples of two-photon processes. The present method provides a clear distinction between the Thomson scattering, regarded as classical scattering, and quantum contributions. Such a distinction let us derive general results concerning light scattering. Finally, possible extensions to the developed formalism are discussed.
Symposium on complexity of sequential and parallel numerical algorithms : program and abstracts.
Creators: name: Symposium On Complexity Of Sequential And Parallel Numerical Algorithms(1973 :Carnegie-Mellon University)
name: J. F.(Joseph Frederick) Traub
Publisher: name: Carnegie Mellon University
Year: 1989
Subjects: subject: 89999 Information and Computing Sciences not elsewhere classified
subject: FOS: Computer and information sciences

description: Computer Science Department
Conductivity in the gravity dual to massive ABJM and the membrane paradigm
Creators: name: Lopez-Arcos, Cristhiam
name: Nastase, Horatiu
name: Rojas, Francisco
name: Murugan, Jeff
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this paper we analyze the effect of the massive deformation of the ABJM model on the calculation of conductivity of the dual theory. We show that some of the difficulties presented by the dual geometry, in particular the construction of black holes therein, can be at least partially circumvented by adopting a membrane paradigm-like computation of the conductivity, which requires us to know just the effect of the deformation on the {\it horizon} of a black hole in AdS${}_{4}$. The deformation at the horizon itself is found by first deforming the flat space near the horizon, and then using the corresponding solution near the horizon as initial conditions for the Einstein's equations. We find the same result, showing an increase in conductivity, using two types of membrane paradigm computations.
description: 28 pages, explanations added, paragraph added at the end of section 2
Pulsating B-type stars in the young open cluster h Persei (NGC 869)
Creators: name: Majewska-Swierzbinowicz, A.
name: Pigulski, A.
name: Szabo, R.
name: Csubry, Z.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We announce the discovery of six Beta Cephei stars and many other variable stars in the young open cluster h Persei (NGC 869). The cluster seems to be very rich in variable B-type stars, similarly to its twin, Chi Persei (NGC 884).
description: 5 pages, 5 figures, Proc. HELAS-II conference, Goettingen, 20-24 August 2007
title: Physical and Numerical Modelling of Tsunami-Like Bores Surf and Swash Flows
Creators: name: Barranco, Ignacio
name: Higuera, Pablo
name: Liu, Philip L.-F.
Publisher: name: Bundesanstalt für Wasserbau
Year: 2019

description: Presented at: Coastal Structures Conference 2019, Hannover, Germany, September 30th – October 2nd, 2019
The Optimal Majority Threshold as a Function of the Variation Coefficient of the Environment
Creators: name: Chebotarev, P. Yu.
name: Malyshev, V. A.
name: Tsodikova, Ya. Yu.
name: Loginov, A. K.
name: Lezina, Z. M.
name: Afonkin, V. A.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Optimization and Control (math.OC)
subject: Multiagent Systems (cs.MA)
subject: Systems and Control (eess.SY)
subject: Probability (math.PR)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Physical sciences
subject: 91B12, 91B70

description: Within the model of social dynamics determined by collective decisions in a stochastic environment (ViSE model), we consider the case of a homogeneous society consisting of classically rational economic agents (or homines economici, or egoists). We present expressions for the optimal majority threshold and the maximum expected capital increment as functions of the parameters of the environment. An estimate of the rate of change of the optimal threshold at zero is given, which is an absolute constant: $(\sqrt{2/π}-\sqrt{π/2})/2$.
description: 10 pages, 7 figures
Combined macro- and micro-rheometer for use with Langmuir monolayers
Creators: name: Walder, Robert
name: Schmidt, Christoph
name: Dennin, Michael
Publisher: name: arXiv
Year: 2007
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: A Langmuir monolayer trough that is equipped for simultaneous microrheology and standard rheology measurements has been constructed. The central elements are the trough itself with a full range of optical tools accessing the air-water interface from below the trough and a portable knife-edge torsion pendulum that can access the interface from above. The ability to simultaneously measure the mechanical response of Langmuir monolayers on very different lengths scales is an important step in for our understanding of the mechanical response of such systems.
Phosphorus-bearing molecules in the Galactic Center
Creators: name: Rivilla, V. M.
name: Jiménez-Serra, I.
name: Zeng, S.
name: Martín, S.
name: Martín-Pintado, J.
name: Armijos-Abendaño, J.
name: Viti, S.
name: Aladro, R.
name: Riquelme, D.
name: Requena-Torres, M.
name: Quénard, D.
name: Fontani, F.
name: Beltrán, M. T.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Phosphorus (P) is one of the essential elements for life due to its central role in biochemical processes. Recent searches have shown that P-bearing molecules (in particular PN and PO) are present in star-forming regions, although their formation routes remain poorly understood. In this Letter, we report observations of PN and PO towards seven molecular clouds located in the Galactic Center, which are characterized by different types of chemistry. PN is detected in five out of seven sources, whose chemistry is thought to be shock-dominated. The two sources with PN non-detections correspond to clouds exposed to intense UV/X-rays/cosmic-ray radiation. PO is detected only towards the cloud G+0.693$-$0.03, with a PO/PN abundance ratio of $\sim$1.5. We conclude that P-bearing molecules likely form in shocked gas as a result of dust grain sputtering, while are destroyed by intense UV/X-ray/cosmic ray radiation.
description: 5 pages, 3 figures, 2 tables, accepted for publication in MNRAS Letters
The early evolution of viscous and self-gravitating circumstellar disks with a dust component
Creators: name: Vorobyov, Eduard
name: Akimkin, Vitaly
name: Stoyanovskaya, Olga
name: Pavlyuchenkov, Yaroslav
name: Liu, Hauyu Baobab
Publisher: name: arXiv
Year: 2018
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The long-term evolution of a circumstellar disk starting from its formation and ending in the T Tauri phase was simulated numerically with the purpose of studying the evolution of dust in the disk with distinct values of viscous α-parameter and dust fragmentation velocity v_frag. We solved numerical hydrodynamics equations in the thin-disk limit, which are modified to include a dust component consisting of two parts: sub-micron-sized dust and grown dust with a maximum radius a_r. The former is strictly coupled to the gas, while the latter interacts with the gas via friction. The conversion of small to grown dust, dust growth, and dust self-gravity are also considered. We found that the process of dust growth known for the older protoplanetary phase also holds for the embedded phase of disk evolution. The dust growth efficiency depends on the radial distance from the star - a_r is largest in the inner disk and gradually declines with radial distance. In the inner disk, a_r is limited by the dust fragmentation barrier. The process of small-to-grown dust conversion is very fast once the disk is formed. The total mass of grown dust in the disk (beyond 1 AU) reaches tens or even hundreds of Earth masses already in the embedded phase of star formation and even a greater amount of grown dust drifts in the inner, unresolved 1 AU of the disk. Dust does not usually grow to radii greater than a few cm. A notable exception are models with α<= 10^{-3}, in which case a zone with reduced mass transport develops in the inner disk and dust can grow to meter-sized boulders in the inner 10 AU. Grown dust drifts inward and accumulates in the inner disk regions. This effect is most pronounced in the α<= 10^{-3} models where several hundreds of Earth masses can be accumulated in a narrow region of several AU from the star by the end of embedded phase. (abridged).
description: accepted by Astronomy & Astrophysics
Symmetric Probabilistic Alignment for Example-Based Translation
Creators: name: Kim, Jae Dong
name: Brown, Ralf D
name: Jansen, Peter J
name: Carbonell, Jaime G.
Publisher: name: Carnegie Mellon University
Year: 2002
Subjects: subject: 89999 Information and Computing Sciences not elsewhere classified
subject: FOS: Computer and information sciences

description: Since subsentential alignment is critically important to the translation quality of an Example-Based Machine Translation (EBMT) system which operates by finding and combining phrase-level matches against the training examples, we recently decided to develop a new alignment algorithm for the purpose of improving the EBMT system’s performance. Unlike most algorithms in the literature, this new Symmetric Probabilistic Alignment (SPA) algorithm treats the source and target languages in a symmetric fashion. In this paper, we describe our basic algorithm and some extensions for using context and positional information, compare its alignment accuracy with IBM Model 4, and report on experiments in which either IBM Model 4 or SPA alignments are substituted for the aligner currently built into the EBMT system. Both Model 4 and SPA are significantly better than the internal aligner and SPA slightly outperforms Model 4 despite being handicapped by incomplete integration with EBMT.
title: Source Term Formulae to Account for Energy Losses by Macro-Roughness Elements in Modeling Tsunami Inundation
Creators: name: Leschka, Stefan
name: Oumeraci, Hocine
Publisher: name: Bundesanstalt für Wasserbau
Year: 2019

description: Presented at: Coastal Structures Conference 2019, Hannover, Germany, September 30th – October 2nd, 2019
Practical dispersion relations for strongly coupled plasma fluids
Creators: name: Khrapak, Sergey
Publisher: name: arXiv
Year: 2017
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: Very simple explicit analytical expressions are discussed, which are able to describe the dispersion relations of longitudinal waves in strongly coupled plasma systems such as one-component plasma and weakly screened Yukawa fluids with a very good accuracy. Applications to other systems with soft pairwise interactions are briefly discussed.
description: 11 pages, 3 figures; Related to arXiv:1711.06158
title: Effect of Unsteadiness on the Flow around a Circular Pile
Creators: name: Kohandel Gargari, Mehrnoush
name: Kirca, V.S.Ozgur
name: Dolaman, Umut
name: Yagci, Oral
Publisher: name: Bundesanstalt für Wasserbau
Year: 2019

description: Presented at: Coastal Structures Conference 2019, Hannover, Germany, September 30th – October 2nd, 2019
Boron in copper: a perfect misfit in the bulk and cohesion enhancer at a grain boundary
Creators: name: Lozovoi, A. Y.
name: Paxton, A. T.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Our ab initio study suggests that boron segregation to the Sigma 5(310)[001] grain boundary should strengthen the boundary up to 1.5 ML coverage (15.24 at/nm^2). The maximal effect is observed at 0.5 ML and corresponds to boron atoms filling exclusively grain boundary interstices. In copper bulk, B causes significant distortion both in interstitial and regular lattice sites for which boron atoms are either too big or too small. The distortion is compensated to large extent when the interstitial and substitutional boron combine together to form a strongly bound dumbell. Our prediction is that bound boron impurities should appear in sizable proportion if not dominate in most experimental conditions. A large discrepancy between calculated heats of solution and experimental terminal solubility of B in Cu is found, indicating either a sound failure of the local density approximation or, more likely, strongly overestimated solubility limits in the existing B-Cu phase diagram.
description: 16 pages, 9 figures
Mapping non-verbal tools used to assess and explore grief, health and wellbeing, a scoping review.
Creators: name: Field, Freya
name: Selman, Lucy
name: Goss, Silvia
name: Friel, Dominic
name: Harrop, Emily
name: Mann, Mala
name: Hopewell-Kelly, Noreen
name: Machin, Linda
name: Scheding, Emma
name: Pickles, Timothy
name: Perna, Letizia
Publisher: name: OSF Registries
Year: 2024
Subjects: subject: Medicine and Health Sciences
subject: Social and Behavioral Sciences
subject: Bereavement
subject: Grief
subject: Non verbal
subject: Scoping review

description: The purpose of this review is to inform stakeholder workshops that will support the design of a non-verbal tool for the assessment and measurement of grief, health and wellbeing in support of bereaved young people (under 7) and people with Special Education Needs (SEN). The objective of the scoping review is to establish an overview of the current evidence base related to the question, for which a full systematic review is unnecessary.
title: Hydraulic Performance of Innovative Seashell-Shaped Artificial Armor Units for Coastal Protections (SeashellBreakwater)
Creators: name: Elsafti, Hisham
name: Almaghraby, Mustafa
name: Iskander, Moheb
name: Goseberg, Nils
Publisher: name: Bundesanstalt für Wasserbau
Year: 2019

description: Presented at: Coastal Structures Conference 2019, Hannover, Germany, September 30th – October 2nd, 2019
Symbolic Verification of MOS Circuits
Creators: name: Bryant, Randal E.
Publisher: name: Carnegie Mellon University
Year: 1997
Subjects: subject: 89999 Information and Computing Sciences not elsewhere classified
subject: FOS: Computer and information sciences

description: The program MOSSYM simulates the behavior of a MOS circuit represented as a switch-level network symbolically. That is, during simulator operation the user can set an input to either 0, 1, or a Boolean variable. The simulator then computes the behavior of the circuit as a function of the past and present input variables. By using heuristically efficient Boolean function manipulation algorithms, the verification of a circuit by symbolic simulation can proceed much more quickly than by exhaustive logic simulation. In this paper we present our concept of symbolic simulation, derive an algorithm for switch-level symbolic simulation, and present experimental measurements from MOSSYM.
Radiative GRMHD simulations of accretion disks
Creators: name: Kluźniak, Włodek
name: Abarca, David
name: Mishra, Bhupendra
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We describe some recent results on the evolution of accretion disks around black holes and neutron stars obtained in magnetohydrodynamic (MHD) simulations in general relativity (GR) with the inclusion of radiation (GRRMHD).
description: 6 pages, 4 figures, Proceeding for SMFNS2017 5th International Symposium on Strong Electromagnetic Fields and Neutron Stars, 10-13 May, 2017 Varadero, Cuba
Strata of vector spaces of forms in k[x,y] and of rational curves in P^k
Creators: name: Iarrobino, Anthony
Publisher: name: arXiv
Year: 2013
Subjects: subject: Commutative Algebra (math.AC)
subject: FOS: Mathematics
subject: 13A15 (Primary), 14H45 (Secondary)

description: Consider the polynomial ring R=k[x,y] over an infinite field k and the subspace R_j of degree-j homogeneous polynomials. The Grassmanian G=Grass (R_j,d) parametrizes the vector spaces V in R_j having dimension d. The strata Grass_H(R_j,d) in G determined by the Hilbert function H=H(R/(V)) or, equivalently, by the Betti numbers of the algebra R/(V), are locally closed and irreducible of known dimension. We had previously shown also that they satisfy a frontier property that the closure of a stratum is its union with lower strata [I1,I2]. Each stratum corresponds to a partition, and the the poset of strata under closure is isomorphic to the poset of corresponding partitions in the Bruhat order. They are coarser than the strata defined by D. Cox, A. Kustin, C. Polini, and B.Ulrich [CKPU] recently that are determined in part by singularities of the rational curve determined by V. We explain these results and give examples to make them more accessible. We also generalize a result of D. Cox, T. Sederberg and F. Chen [CSC] and another of C. D'Andrea [D] concerning the dimension and closure of families of parametrized rational curves from planar to higher dimensional embeddings.
description: v.2 12 pages, 3 tables, some typos corrected
title: Simulations of Storm-Induced Erosion on an Embayed Beach
Creators: name: Chen, Ying-Chi
name: Tsai, Ching-Piao
name: Ko, Chun-Han
Publisher: name: Bundesanstalt für Wasserbau
Year: 2019

description: Presented at: Coastal Structures Conference 2019, Hannover, Germany, September 30th – October 2nd, 2019
Boundary S matrix of an open XXZ spin chain with nondiagonal boundary terms
Creators: name: Murgan, Rajan
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Using a recently proposed solution for an open antiferromagnetic spin-1/2 XXZ quantum spin chain with N (even) spins and two arbitrary boundary parameters at roots of unity, we compute the boundary scattering amplitudes for one-hole states. We also deduce the relations between the lattice boundary parameters appearing in the spin-chain Hamiltonian and the IR (infrared) parameters that appear in the boundary sine-Gordon S matrix.
description: 18 pages, LaTeX; references and numerical results added
Ab initio Simulations of Superionic H2O, H2O2, and H9O4 Compounds
Creators: name: Militzer, Burkhard
name: Zhang, Shuai
Publisher: name: arXiv
Year: 2018
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Using density functional molecular dynamics simulations, we study the behavior of different hydrogen-oxygen compounds at megabar pressures and several thousands of degrees Kelvin where water has been predicted to occur in superionic form. When we study the close packed hcp and dhcp structures of superionic water, we find that they have comparable Gibbs free energies to the fcc structure that we predicted previously [Phys. Rev. Lett., 110 (2013) 151102]. Then we present a comprehensive comparison of different superionic water candidate structures with P2_1, P2_1/c, P3_121, Pcca, C2/m, and Pa3 symmetry that are based on published ground-state structures. We find that the P2_1 and P2_1/c structures transform into a different superionic structure with P2_1/c symmetry, which at 4000 K has a lower Gibbs free energy than fcc for pressures higher than 22.8 +- 0.5 Mbar. This novel structure may also be obtained by distorting a hcp supercell. Finally we show that H2O2 and H9O4 structures will also assume a superionic state at elevated temperatures. Based on Gibbs free energy calculations at 5000 K, we predict that superionic water decompose into H2O2 and H9O4 at 68.7 +- 0.5 Mbar.
description: 6 figures, in press at AIP conference proceedings, 2018
Comment on 'Repulsive Contact Interactions Make Jammed Particulate Systems Inherently Nonharmonic'
Creators: name: Goodrich, Carl P.
name: Liu, Andrea J.
name: Nagel, Sidney R.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: In their Letter, Schreck, Bertrand, O'Hern and Shattuck [Phys. Rev. Lett. 107, 078301 (2011)] study nonlinearities in jammed particulate systems that arise when contacts are altered. They conclude that there is "no harmonic regime in the large system limit for all compressions" and "at jamming onset for any system size." Their argument rests on the claim that for finite-range repulsive potentials, of the form used in studies of jamming, the breaking or forming of a single contact is sufficient to destroy the linear regime. We dispute these conclusions and argue that linear response is both justified and essential for understanding the nature of the jammed solid.
Post Main Sequence Orbital Circularization of Binary Stars in the Large and Small Magellanic Clouds
Creators: name: Faccioli, Lorenzo
name: Alcock, Charles
name: Cook, Kem
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present results from a study of the orbits of eclipsing binary stars (EBs) in the Magellanic Clouds. The samples comprise 4510 EBs found in the Large Magellanic Cloud (LMC) by the MACHO project, 2474 LMC EBs found by the OGLE-II project (of which 1182 are also in the MACHO sample), 1380 in the Small Magellanic Cloud (SMC) found by the MACHO project, and 1317 SMC EBs found by the OGLE-II project (of which 677 are also in the MACHO sample); we also consider the EROS sample of 79 EBs in the bar of the LMC. Statistics of the phase differences between primary and secondary minima allow us to infer the statistics of orbital eccentricities within these samples. We confirm the well-known absence of eccentric orbit in close binary stars. We also find evidence for rapid circularization in longer period systems when one member evolves beyond the main sequence, as also found by previous studies.
description: 37 pages, 16 figures, accepted for publication in ApJ. Added a new reference and updated information on on line material
Revisiting the interacting model of new agegraphic dark energy
Creators: name: Zhang, Jing-Fei
name: Zhao, Li-Ang
name: Zhang, Xin
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: In this paper, a new version of the interacting model of new agegraphic dark energy (INADE) is proposed and analyzed in detail. The interaction between dark energy and dark matter is reconsidered. The interaction term $Q=bH_0ρ_{\rm de}^αρ_{\rm dm}^{1-α}$ is adopted, which abandons the Hubble expansion rate $H$ and involves both $ρ_{\rm de}$ and $ρ_{\rm dm}$. Moreover, the new initial condition for the agegraphic dark energy is used, which solves the problem of accommodating baryon matter and radiation in the model. The solution of the model can be given using an iterative algorithm. A concrete example for the calculation of the model is given. Furthermore, the model is constrained by using the combined Planck data (Planck+BAO+SNIa+$H_0$) and the combined WMAP-9 data (WMAP+BAO+SNIa+$H_0$). Three typical cases are considered: (A) $Q=bH_0ρ_{\rm de}$, (B) $Q=bH_0\sqrt{ρ_{\rm de}ρ_{\rm dm}}$, and (C) $Q=bH_0ρ_{\rm dm}$, which correspond to $α=1$, 1/2, and 0, respectively. The departures of the models from the $Λ$CDM model are measured by the $Δ$BIC and $Δ$AIC values. It is shown that the INADE model is better than the NADE model in the fit, and the INADE(A) model is the best in fitting data among the three cases.
description: 6 pages, 2 figures
4d $\mathcal{N}=1$ quiver gauge theories and the $\mathrm{A_n}$ Bailey lemma
Creators: name: Brünner, Frederic
name: Spiridonov, Vyacheslav P.
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We study the integral Bailey lemma associated with the $\mathrm{A_n}$-root system and identities for elliptic hypergeometric integrals generated thereby. Interpreting integrals as superconformal indices of four-dimensional $\mathcal{N}=1$ quiver gauge theories with the gauge groups being copies of $\mathrm{SU(n+1)}$, we provide evidence for various new dualities. Further confirmation is achieved by explicitly checking that the `t Hooft anomaly matching conditions holds. We discuss a flavour symmetry breaking phenomenon for supersymmetric quantum chromodynamics (SQCD), and by making use of the Bailey lemma we indicate its manifestation in a web of linear quivers dual to SQCD that exhibits full s-confinement.
description: 34 pages
Early results from the PAMIP experiments with ECHAM6 and OpenIFS
Creators: name: Jung, Thomas
name: Semmler, Tido
name: Streffing, Jan
name: Tyrlis, Evangelos
name: Ghosh, Rohit
name: Manzini, Elisa
name: Matei, Daniela
Publisher: name: Zenodo
Year: 2019
Subjects: Polar Amplification Model Intercomparison Project

description: Presentation held within the PAMIP workshop in Devon, UK, 24th to 27th of June, 2019.
PSO-Optimized Hopfield Neural Network-Based Multipath Routing for Mobile Ad-hoc Networks
Creators: name: Sheikhan, Mansour
name: Hemmati, Ehsan
Publisher: name: arXiv
Year: 2017
Subjects: subject: Neural and Evolutionary Computing (cs.NE)
subject: Artificial Intelligence (cs.AI)
subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: Mobile ad-hoc network (MANET) is a dynamic collection of mobile computers without the need for any existing infrastructure. Nodes in a MANET act as hosts and routers. Designing of robust routing algorithms for MANETs is a challenging task. Disjoint multipath routing protocols address this problem and increase the reliability, security and lifetime of network. However, selecting an optimal multipath is an NP-complete problem. In this paper, Hopfield neural network (HNN) which its parameters are optimized by particle swarm optimization (PSO) algorithm is proposed as multipath routing algorithm. Link expiration time (LET) between each two nodes is used as the link reliability estimation metric. This approach can find either node-disjoint or link-disjoint paths in single phase route discovery. Simulation results confirm that PSO-HNN routing algorithm has better performance as compared to backup path set selection algorithm (BPSA) in terms of the path set reliability and number of paths in the set.
description: Mobile ad-hoc networks; Reliability; Multipath routing; Neural networks; Particle swarm optimization (PSO)
Symbolic Timing Simulation Using Cluster Scheduling
Creators: name: McDonald, Clayton B
name: Bryant, Randal E.
Publisher: name: Carnegie Mellon University
Year: 2007
Subjects: subject: 89999 Information and Computing Sciences not elsewhere classified
subject: FOS: Computer and information sciences

description: We recently introduced symbolic timing simulation (STS) using data-dependent delays as a tool for verifying the timing of full custom transistor-level circuit designs, and for the functional verification of delay-dependent logic. While STS leverages efficient symbolic encodings to yield huge gains over conventional simulation methodologies, it still suffers from a problem known as event multiplication. We discuss this problem and present an event-list management technique based on event-clusters, and a new simulator which utilizes this technique. Finally, we demonstrate substantial speedups on a wide range of test cases, including exponential improvement on a simple logic chain.
title: AN, Registre des écrous du Châtelet, Y5266, f. p1000915
Creators: name: Claustre, Julie
name: Nationales, Archives
name: Archives Nationales
name: Claustre, Julie
name: ArchivesNationales/J.CLAUSTRE/H.REGAZZI/2020
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020
Subjects: subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris
subject: Châtelet
subject: registre

description: Registre des écrous du Châtelet, Archives Nationales, Y5266. Numérisation en mode image.
description: Bibliographic citation: Archives Nationales, Registre des écrous du Châtelet, Y5266, f. p1000915
Symbolic Simulation—Techniques and Applications
Creators: name: Bryant, Randal E.
Publisher: name: Carnegie Mellon University
Year: 1987
Subjects: subject: 89999 Information and Computing Sciences not elsewhere classified
subject: FOS: Computer and information sciences

description: Symbolic simulation involves evaluating circuit behavior using special symbolic values to encode a range of circuit operating conditions. In one simulation run, a symbolic simulator can compute what would require many runs of a traditional simulator. Symbolic simulation has applications in both logic and timing verification, as well as sequential test generation. The concept of symbolic simulation has been discussed for over 10 years, but early attempts had only limited success. The recent introduction of more powerful, algorithmic methods of symbolic manipulation have had a major impact on the classes of circuits and properties that can be evaluated symbolically.
title: Sinking of Anchors and Other Subsea Structures due to Wave-Induced Seabed Liquefaction
Creators: name: Kirca, V. S. Ozgur
name: Sumer, B. Mutlu
Publisher: name: Bundesanstalt für Wasserbau
Year: 2019

description: Presented at: Coastal Structures Conference 2019, Hannover, Germany, September 30th – October 2nd, 2019
Symbolic Simulation, Model Checking and Abstraction with Partially Ordered Boolean Functional Vectors
Creators: name: Goel, Amit
name: Bryant, Randal E.
Publisher: name: Carnegie Mellon University
Year: 1976
Subjects: subject: 89999 Information and Computing Sciences not elsewhere classified
subject: FOS: Computer and information sciences

description: Boolean Functional Vectors (BFVs) are a symbolic representation for sets of bit-vectors that can be exponentially more compact than the corresponding characteristic functions with BDDs. Additionally, BFVs are the natural representation of bit-vector sets for Symbolic Simulation. Recently, we developed set manipulation algorithms for canonical BFVs by interpreting them as totally ordered selections. In this paper we generalize BFVs by defining them with respect to a partial order. We show that partially ordered BFVs can serve as abstractions for bit-vector sets and can be used to compute over-approximations in reachability analysis. In the special case when the underlying graph of the partial order is a forest, we can efficiently compute an abstract interpretation in a symbolic simulation framework. We present circuit examples where we leverage the exponential gap in the representations and inherent structure in the state-space to demonstrate the usefulness of Partially Ordered Boolean Functional Vectors.
Magnified Image Spatial Spectrum (MISS) microscopy for nanometer and millisecond scale label-free imaging
Creators: name: Majeed, Hassaan
name: Ma, Lihong
name: Lee, Young Jae
name: Kandel, Mikhail
name: Min, Eunjung
name: Jung, Woonggyu
name: Best-Popescu, Catherine
name: Popescu, Gabriel
Publisher: name: arXiv
Year: 2018
Subjects: subject: Optics (physics.optics)
subject: Biological Physics (physics.bio-ph)
subject: FOS: Physical sciences

description: Label-free imaging of rapidly moving, sub-diffraction sized structures has important applications in both biology and material science, as it removes the limitations associated with fluorescence tagging. However, unlabeled nanoscale particles in suspension are difficult to image due to their transparency and fast Brownian motion. Here we describe a novel interferometric imaging technique referred to as Magnified Image Spatial Spectrum (MISS) microscopy, which overcomes these challenges. The MISS microscope provides quantitative phase information and enables dynamic light scattering investigations with an overall optical path length sensitivity of 0.95 nm at 833 frames per second acquisition rate. Using spatiotemporal filtering, we find that the sensitivity can be further pushed down to 0.001-0.01 nm. We demonstrate the instrument's capability through colloidal nanoparticle sizing down to 20 nm diameter and measurements of live neuron membrane dynamics. MISS microscopy is implemented as an upgrade module to an existing microscope, which converts it into a powerful light scattering instrument. Thus, we anticipate that MISS will be adopted broadly for both material and life sciences applications.
High-energy hadron physics at future facilities
Creators: name: Strikman, Mark
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We outline several directions for future investigations of the three-dimensional structure of nucleon, including multiparton correlations, color transparency, and branching processes at hadron colliders and at hadron factories. We also find evidence that pQCD regime for non-vacuum Regge trajectories sets in for $-t\ge 1 {GeV}^2$ leading to nearly t-independent trajectories.
description: 8 pages, 1 figure, Invited talk at INPC07, Tokyo, June 3-8, 2007