cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
A search for tight hierarchical triple systems amongst the eclipsing binaries in the CoRoT fields
Creators: name: Hajdu, T.
name: Borkovits, T.
name: Forgács-Dajka, E.
name: Sztakovics, J.
name: Marschalkó, G.
name: Benkő, J. M.
name: Klagyivik, P.
name: Sallai, M. J.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We report a comprehensive search for hierarchical triple stellar system candidates amongst eclipsing binaries (EB) observed by the CoRoT spacecraft. We calculate and check eclipse timing variation (ETV) diagrams for almost 1500 EBs in an automated manner. We identify five relatively short-period Algol systems for which our combined light curve and complex ETV analyses (including both the light-travel time effect and short-term dynamical third-body perturbations) resulted in consistent third-body solutions. The computed periods of the outer bodies are between 82 and 272 days, (with an alternative solution of 831 days for one of the targets). We find that the inner and outer orbits are near coplanar in all but one case. The dynamical masses of the outer subsystems determined from the ETV analyses are consistent with both the results of our light curve analyses and the spectroscopic information available in the literature. One of our candidate systems exhibits outer eclipsing events as well, the locations of which are in good agreement with the ETV solution. We also report another certain triply eclipsing triple system which, however, is lacking a reliable ETV solution due to the very short time range of the data, and four new blended systems (composite light curves of 2 eclipsing binaries each), where we cannot decide whether the components are gravitationally binded or not. Amongst these blended systems we identify the longest period and highest eccentricity eclipsing binary in the entire CoRoT sample.
description: Accepted for publication in MNRAS. Online only Appendix A is attached to this arXiv version
Entangling power of permutation invariant quantum states
Creators: name: Popkov, Vladislav
name: Salerno, Mario
name: Schuetz, Gunter
Publisher: name: arXiv
Year: 2005
Subjects: subject: Quantum Physics (quant-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We investigate the von Neumann entanglement entropy as function of the size of a subsystem for permutation invariant ground states in models with finite number of states per site, e.g., in quantum spin models. We demonstrate that the entanglement entropy of $n$ sites in a system of length $L$ generically grows as $σ\log_{2}[2πen(L-n)/L]+C$, where $σ$ is the on-site spin and $C$ is a function depending only on magnetization.
description: 6 pages, 2 figures
Advantages of digital radiography over traditional methods of X-ray study
Creators: name: Юріївна, Колюбаєва Олена
Publisher: name: Zenodo
Year: 2020
Subjects: digital radiography
film radiography
цифрова рентгенографія
плівкова рентгенографія

description: In English:  [Koliubaieva OYu. Advantages of digital radiography over traditional methods of X-ray study. Proceedings of the XХIІ International Scientific and Practical Conference "Modern Science and its Impact on Humanity Development" (Ukraine, Kharkiv, August 30, 2020). Bull KhRIPHS (ISSN 2707-9287), 2020;96(4):52-3. https://doi.org/10.5281/zenodo.4008011] Keywords: digital radiography, film radiography. Українською:  [Колюбаєва ОЮ. Переваги цифрової рентгенографії перед традиційними методами рентгенологічного дослідження. Матеріали XХIІ Міжнародної науково-практичної конференції «Сучасна наука та її вплив на розвиток людства» (Україна, м. Харків, 30 серпня 2020). Вісник ХРІПГОЗ (ISSN 2707-9287), 2020;96(4):52-3. https://doi.org/10.5281/zenodo.4008011] Ключові слова: цифрова рентгенографія, плівкова рентгенографія.
description: {"references": ["\u0421\u043e\u0433\u043e\u043a\u043e\u043d\u044c \u041e\u0411, \u0412\u043e\u043b\u043e\u0447\u0430\u0439 \u0406\u041b, \u041a\u0456\u043d\u043e\u0448\u0435\u043d\u043a\u043e \u042e\u0422, \u0411\u0430\u0431\u0430\u043d\u0456\u043d \u0421\u0412, \u041a\u043e\u043b\u0438\u0448\u043a\u0456\u043d \u0412\u0412. \u0426\u0438\u0444\u0440\u043e\u0432\u0430 \u0440\u0435\u043d\u0442\u0433\u0435\u043d\u043e\u043b\u043e\u0433\u0456\u044f. \u041c\u0435\u0442\u043e\u0434\u0438 \u043e\u0434\u0435\u0440\u0436\u0430\u043d\u043d\u044f \u0437\u043e\u0431\u0440\u0430\u0436\u0435\u043d\u043d\u044f \u0442\u0430 \u043f\u0435\u0440\u0435\u0432\u0430\u0433\u0438 \u043f\u0435\u0440\u0435\u0434 \u0442\u0440\u0430\u0434\u0438\u0446\u0456\u0439\u043d\u0438\u043c\u0438 \u0442\u0435\u0445\u043d\u043e\u043b\u043e\u0433\u0456\u044f\u043c\u0438. [\u0406\u043d\u0442\u0435\u0440\u043d\u0435\u0442, \u0434\u043e\u0441\u0442\u0443\u043f 30.08.2020]: https://kvant.ua/ua/articles/9.html", "\u041e\u0441\u043d\u043e\u0432\u044b \u0438 \u043f\u0440\u0438\u043d\u0446\u0438\u043f\u044b \u043b\u0443\u0447\u0435\u0432\u043e\u0439 \u0434\u0438\u0430\u0433\u043d\u043e\u0441\u0442\u0438\u043a\u0438: \u0423\u0447\u0435\u0431-\u043c\u0435\u0442\u043e\u0434. \u043f\u043e\u0441\u043e\u0431\u0438\u0435. \u0410\u043b\u0435\u0448\u043a\u0435\u0432\u0438\u0447 \u0410\u0418 \u0438 \u0434\u0440. \u041c\u0438\u043d\u0441\u043a: \u0411\u0413\u041c\u0423, 2015. 86 \u0441.", "Bansal GJ. Digital radiography. A comparison with modern conventional imaging. Postgrad Med J. 2006;82(969):425-8."]}
The American party in Utah : a study of political party struggles during the early years of statehood
Creators: name: Snow, Reuben Joseph
Publisher: name: University of Utah
Year: 2019
Subjects: Political parties
Utah Utah
Politics and government

description: The political history of Utah during the period from 1900 to 1920 has been largely ignored by historians. Yet during that period occurred some of the most exciting political events of Utah's unique story. The opening decades of the twentieth century saw the rise to power of Senator Reed Smoot, whom many would call the most illustrious and at the same time most powerful politician Utah ever produced.
Large Scale Brownian Dynamics of Confined Suspensions of Rigid Particles
Creators: name: Sprinkle, B.
name: Usabiaga, F. Balboa
name: Patankar, N. A.
name: Donev, A.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We introduce methods for large scale Brownian Dynamics (BD) simulation of many rigid particles of arbitrary shape suspended in a fluctuating fluid. Our method adds Brownian motion to the rigid multiblob method at a cost comparable to the cost of deterministic simulations. We demonstrate that we can efficiently generate deterministic and random displacements for many particles using preconditioned Krylov iterative methods, if kernel methods to efficiently compute the action of the Rotne-Prager-Yamakawa (RPY) mobility matrix and it "square" root are available for the given boundary conditions. We address a major challenge in large-scale BD simulations, capturing the stochastic drift term that arises because of the configuration-dependent mobility. Unlike the widely-used Fixman midpoint scheme, our methods utilize random finite differences and do not require the solution of resistance problems or the computation of the action of the inverse square root of the RPY mobility matrix. We construct two temporal schemes which are viable for large scale simulations, an Euler-Maruyama traction scheme and a Trapezoidal Slip scheme, which minimize the number of mobility solves per time step while capturing the required stochastic drift terms. We validate and compare these schemes numerically by modeling suspensions of boomerang shaped particles sedimented near a bottom wall. Using the trapezoidal scheme, we investigate the steady-state active motion in a dense suspensions of confined microrollers, whose height above the wall is set by a combination of thermal noise and active flows. We find the existence of two populations of active particles, slower ones closer to the bottom and faster ones above them, and demonstrate that our method provides quantitative accuracy even with relatively coarse resolutions of the particle geometry.
description: To appear in J. Chem. Phys
A near-IR spectrum of the DO white dwarf RE J0503-285
Creators: name: Dobbie, Paul
name: Burleigh, Matt
name: Levan, Andrew
name: Barstow, Martin
name: Napiwotzki, Ralf
name: Hubeny, Ivan
name: .
name: .
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present a near-IR spectroscopic analysis of the intriguing DO white dwarf RE J0503-285. The IR spectrum fails to reveal evidence of the presence of a spatially unresolved, cool, late-type companion. Hence we have placed an approximate limit on the spectral-type and mass of a putative companion (later than M8, M<0.085Msun). This result rules out ongoing interaction between the white dwarf and a close companion with M>0.085Msun as responsible for the discrepancies between the observed photospheric abundances and model predictions. As the possibility remains that there is a cooler companion lying beyond the detection threshold of this study we use our modelling to estimate the improvement in sensitivity offered by a Spitzer observation.
description: Research Note, accepted for publication in A&A
Gravitational Waves and Gamma-rays from a Binary Neutron Star Merger: GW170817 and GRB 170817A
Creators: name: LIGO Scientific Collaboration
name: Virgo Collaboration
name: Monitor, Fermi Gamma-Ray Burst
name: INTEGRAL
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: On 2017 August 17, the gravitational-wave event GW170817 was observed by the Advanced LIGO and Virgo detectors, and the gamma-ray burst (GRB) GRB 170817A was observed independently by the Fermi Gamma-ray Burst Monitor, and the Anticoincidence Shield for the Spectrometer for the International Gamma-Ray Astrophysics Laboratory. The probability of the near-simultaneous temporal and spatial observation of GRB 170817A and GW170817 occurring by chance is $5.0\times 10^{-8}$. We therefore confirm binary neutron star mergers as a progenitor of short GRBs. The association of GW170817 and GRB 170817A provides new insight into fundamental physics and the origin of short gamma-ray bursts. We use the observed time delay of $(+1.74 \pm 0.05)\,$s between GRB 170817A and GW170817 to: (i) constrain the difference between the speed of gravity and the speed of light to be between $-3\times 10^{-15}$ and $+7\times 10^{-16}$ times the speed of light, (ii) place new bounds on the violation of Lorentz invariance, (iii) present a new test of the equivalence principle by constraining the Shapiro delay between gravitational and electromagnetic radiation. We also use the time delay to constrain the size and bulk Lorentz factor of the region emitting the gamma rays. GRB 170817A is the closest short GRB with a known distance, but is between 2 and 6 orders of magnitude less energetic than other bursts with measured redshift. A new generation of gamma-ray detectors, and subthreshold searches in existing detectors, will be essential to detect similar short bursts at greater distances. Finally, we predict a joint detection rate for the Fermi Gamma-ray Burst Monitor and the Advanced LIGO and Virgo detectors of 0.1--1.4 per year during the 2018-2019 observing run and 0.3--1.7 per year at design sensitivity.
description: 27 pages, 6 figures, 2 tables
title: 02_1046
Creators: name: Wesley Baldwin, John
name: Baldwin, John W.
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2018
Subjects: subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris

description: L'ensemble de ces notes ont été crée par John Baldwin lors d'une de ses premières périodes de résidence à Paris. Ces documents comprennent tous les magistri qu’il avait pu rencontrer dans ses sources. Aux XIIème et XIIIème siècles, les universités n'existant pas encore, le titre de magister s'il évoque certainement une compétence n'est pas rattaché de façon systématique au passage par les écoles. De surcroît, les magistris sont le plus souvent désignés par leur seul prénom. La lecture de ces données est donc difficile et suppose un long travail pour tenter d'identifier un individu auquel on pourrait rattacher plusieurs mentions. John Baldwin avait donc renoncé à utiliser ces données pour donner un prolongement à sa magnifique étude sur les gradués d'université et leur emploi par les Capétiens et les Plantagenêts. Néanmoins, il a conservé ces données et elles sont potentiellement très utile dans le cadre de Studium, comme le sont toutes les mentions dans les volumes des Fasti Ecclesiae Gallicanae de chanoines portant ce titre de magister sans autres précisions. L'ampleur des dépouillements rend ces données très utiles et nous devons une grande reconnaissance à John Baldwin pour avoir pris la peine de faire photocopier ses fiches et de nous les avoir transmises amicalement.
Les données ainsi que les images des fiches sont accessibles sur le site Internet à l'adresse suivante : http://studium-baldwin.lamop.fr/.
Les transcriptions des fiches ont été effectuées par des étudiants de Paris 1 Panthéon - Sorbonne mais elles n'ont pas été corrigées par la suite.
description: Relation: https://lamop.hypotheses.org/
An autonomist biopolitics of education: Reframing educational life in the age of neoliberal multiculturalism
Creators: name: Bourassa, Gregory N.
Publisher: name: University of Utah
Year: 2018
Subjects: Education and state
Educational philosophy
Autonomist marxism
Culturally relevant teaching
Educational biopolitics
Neoliberal multiculturalism
Resistance theory

description: Building upon an emerging literature of educational biopolitics, this dissertation develops and thinks through some concepts to explore the prevailing forms of educational life (constituted bíos) that schools commonly promote in the service of constituted power and, alternatively, the kinds of educational life (constituent bíos) that call constituted power into question and portend new possibilities and alternative arrangements of being. In considering the kinds of life that schools typically allow and disallow, this philosophical dissertation poses the following educational problem: Schools have long celebrated and reproduced a limited and corrosive formulation of educational life (constituted bíos) while foreclosing constituent forms. Moreover, the emergent social, political and epistemological strengths of students marginalized in the configuration of constituted power-the component parts of constituent bíos-are routinely deemed inferior in schools and often regarded as a contaminating threat that must be eliminated. Using the concepts of constituent and constituted bíos as units of analysis, this study explores how progressive and critical educational approaches, such as culturally relevant teaching and resistance theory, also fail to account for and appreciate constituent forms of educational life. In order to offer a more nuanced understanding of the relation between forms of life and schools, this study offers an autonomist biopolitics of education. With this orientation, constituent bíos is recognized as the foundational and constitutive motor to which schools are constantly reacting and attempting to "deal with". Such a perspective might help educators be more attuned and responsive to the constituent dimensions of social ontology.
Additional file 8 of SETD8, a frequently mutated gene in cervical cancer, enhances cisplatin sensitivity by impairing DNA repair
Creators: name: Wang, Xin
name: Cao, Chen
name: Tan, Xiangyu
name: Liao, Xueyao
name: Du, Xiaofang
name: Wang, Xueqian
name: Liu, Ting
name: Gong, Danni
name: Hu, Zheng
name: Tian, Xun
Publisher: name: figshare
Year: 2023
Subjects: subject: Biophysics
subject: Biochemistry
subject: Space Science
subject: Medicine
subject: Cell Biology
subject: Molecular Biology
subject: Pharmacology
subject: Biotechnology
subject: Chemical Sciences not elsewhere classified
subject: Cancer
subject: Infectious Diseases
subject: FOS: Health sciences

description: Additional File 8: Table S3. Analysis of SETD8 mutations and predicting the functional effects by silico analysis.
An Automated Microfluidic Nucleic Acid Extraction System for Sample Preparation with an Integrated Polymerase Chain Reaction Module
Creators: name: Johnson, Michael Aaron
Publisher: name: University of Utah
Year: 2019
Subjects: subject: Mechanical engineering
subject: FOS: Mechanical engineering

description: This project will produce an automated microfluidic system capable of extracting and purifying nucleic acids from raw samples for detection and analysis. The first step will be the development and characterization of microfluidic components and fabrication methods that will be implemented into the final device. The gas permeability properties of PDMS will be utilized to demonstrate integrated components for pumping, gas bubble trapping and removal, and enhanced mixing. Next, a three-layer PDMS with silicone membrane microfluidic platform will be developed to control fluid flow for nucleic acid purification processes. This microfluidic chip will be capable of taking a raw biological sample through the steps of cell lysis and solid phase nucleic acid extraction to deliver purified DNA or RNA for testing and analysis. The microfluidic chip will be mounted on a portable, desktop control system to allow automated device operation in clinics, laboratories, or the field. Finally, a disposable oscillatory flow PCR chip will be made from polycarbonate to amplify low concentrations of nucleic acid. The PCR module will also be controlled by the same instrument used for nucleic acid extraction. Temperature control will be provided by external heating blocks, and internal chip fluid temperature will be determined by numerical simulations. This device will be a step towards having a universal nucleic acid purification device to fill the much-needed niche in sample preparation for lab-on-a-chip applications.
Measurement of the near-threshold $e^+e^- \to D^{(*)\pm}{D}{}^{*\mp}$ cross section using initial-state radiation
Creators: name: Belle Collaboration
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We report a measurement of the exclusive $e^+e^- \to D^{(*)\pm}{D}{}^{*\mp}$ cross section as a function of center-of-mass energy near the $D^{(*)^{\pm}}{D}{}^{*\mp}$ threshold with initial state radiation. A partial reconstruction technique is used to increase the efficiency and to suppress background. The analysis is based on a data sample collected with the Belle detector at the $Υ(4S)$ resonance and nearby continuum with an integrated luminosity of 547.8 $\mathrm{fb}^{-1}$ at the KEKB asymmetric-energy $e^+ e^-$ collider.
description: Submitted to the ICHEP06 Conference, Moscow, Russia, BELLE-CONF-0609, submitted to PRL
MPEC 2024-F20 : 2024 FH
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2024
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2024 FH

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Metal Hypersensitivity Reactions to Orthopedic Implants
Creators: name: Teo, Wendy Z. W.
name: Schalock, Peter C.
Publisher: name: Adis Journals
Year: 2018
Subjects: subject: Medicine
subject: 110304 Dermatology
subject: FOS: Clinical medicine

description: Article full text
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Oscillation collapse in coupled quantum van der Pol oscillators
Creators: name: Ishibashi, Kenta
name: Kanamoto, Rina
Publisher: name: arXiv
Year: 2017
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The classical self-oscillations can collapse merely due to their mutual couplings. We investigate this oscillation collapse in quantum van der Pol oscillators. For a pair of quantum oscillators, the steady-state mean phonon number is shown to be lower than in the corresponding classical model with a Gaussian white noise that mimics quantum noise. We further show within the mean-field theory that a number of globally coupled oscillators undergo a transition from the synchronized periodic motion to the collective oscillation collapse. A quantum many-body simulation suggests that the increase in the number of oscillators leads to a lower steady-state mean phonon number, bounded below by the mean-field result.
description: 7 pages, 4 figures
Sturmian numeration systems and decompositions to palindromes
Creators: name: Frid, Anna
Publisher: name: arXiv
Year: 2017
Subjects: subject: Formal Languages and Automata Theory (cs.FL)
subject: FOS: Computer and information sciences
subject: 68R15

description: We extend the classical Ostrowski numeration systems, closely related to Sturmian words, by allowing a wider range of coefficients, so that possible representations of a number $n$ better reflect the structure of the associated Sturmian word. In particular, this extended numeration system helps to catch occurrences of palindromes in a characteristic Sturmian word and thus to prove for Sturmian words the following conjecture stated in 2013 by Puzynina, Zamboni and the author: If a word is not periodic, then for every $Q>0$ it has a prefix which cannot be decomposed to a concatenation of at most $Q$ palindromes.
description: Submitted to European Journal of Combinatorics
Looking at A 0535+26 at low luminosities with NuSTAR
Creators: name: Ballhausen, Ralf
name: Pottschmidt, Katja
name: Fürst, Felix
name: Wilms, Jörn
name: Tomsick, John A.
name: Schwarm, Fritz-Walter
name: Stern, Daniel
name: Kretschmar, Peter
name: Caballero, Isabel
name: Harrison, Fiona A.
name: Boggs, Steven E.
name: Christensen, Finn E.
name: Craig, William W.
name: Hailey, Charles J.
name: Zhang, William W.
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We report on two NuSTAR observations of the HMXB A 0535+26 taken toward the end of its normal 2015 outburst at very low $3-50$ keV luminosities of ${\sim}1.4\times10^{36}$ erg/s and ${\sim}5\times10^{35}$ erg/s which are complemented by 9 Swift observations. The data clearly confirm indications seen in earlier data that the source's spectral shape softens as it becomes fainter. The smooth, exponential rollover at high energies present in the first observation evolves to a much more abrupt steepening of the spectrum at $20-30$ keV. The continuum evolution can be well described with emission from a magnetized accretion column, modeled using the compmag model modified by an additional Gaussian emission component for the fainter observation. Between the two observations, the optical depth changes from $0.75\pm0.04$ to $0.56^{+0.01}_{-0.04}$, the electron temperature remains constant, and there is an indication that the column decreases in radius. Since the energy resolved pulse profiles remain virtually unchanged in shape between the two observations, the emission properties of the accretion column, however, reflect the same accretion regime. This conclusion is also confirmed by our result that the energy of the cyclotron resonant scattering feature (CRSF) at ${\sim}45$ keV is independent of the luminosity, implying that the magnetic field in the region in which the observed radiation is produced is the same in both observations. Finally, we also constrain the evolution of the continuum parameters with rotational phase of the neutron star. The width of the CRSF could only be constrained for the brighter observation. Based on Monte-Carlo simulations of CRSF formation in single accretion columns, its pulse phase dependence supports a simplified fan beam emission pattern. The evolution of the CRSF width is very similar to that of the CRSF depth, which is in disagreement with expectations.
description: 14 pages, 11 figures, 3 tables, accepted for publication in A&A
Dynamical evolution of near-Earth asteroid 1991 VG
Creators: name: Marcos, C. de la Fuente
name: Marcos, R. de la Fuente
Publisher: name: arXiv
Year: 2017
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: The discovery of 1991 VG on 1991 November 6 attracted an unprecedented amount of attention as it was the first near-Earth object (NEO) ever found on an Earth-like orbit. At that time, it was considered by some as the first representative of a new dynamical class of asteroids, while others argued that an artificial (terrestrial or extraterrestrial) origin was more likely. Over a quarter of a century later, this peculiar NEO has been recently recovered and the new data may help in confirming or ruling out early theories about its origin. Here, we use the latest data to perform an independent assessment of its current dynamical status and short-term orbital evolution. Extensive N-body simulations show that its orbit is chaotic on time-scales longer than a few decades. We confirm that 1991 VG was briefly captured by Earth's gravity as a minimoon during its previous fly-by in 1991-1992; although it has been a recurrent transient co-orbital of the horseshoe type in the past and it will return as such in the future, it is not a present-day co-orbital companion of the Earth. A realistic NEO orbital model predicts that objects like 1991 VG must exist and, consistently, we have found three other NEOs --2001 GP2, 2008 UA202 and 2014 WA366-- which are dynamically similar to 1991 VG. All this evidence confirms that there is no compelling reason to believe that 1991 VG is not natural.
description: 10 pages, 6 figures, 2 tables. Revised to match version published in Monthly Notices of the Royal Astronomical Society Main Journal
Non-Uniqueness of Quantized Yang-Mills Theories
Creators: name: Duetsch, Michael
Publisher: name: arXiv
Year: 1996
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider quantized Yang-Mills theories in the framework of causal perturbation theory which goes back to Epstein and Glaser. In this approach gauge invariance is expressed by a simple commutator relation for the S-matrix. The most general coupling which is gauge invariant in first order contains a two-parametric ambiguity in the ghost sector - a divergence- and a coboundary-coupling may be added. We prove (not completely) that the higher orders with these two additional couplings are gauge invariant, too. Moreover we show that the ambiguities of the n-point distributions restricted to the physical subspace are only a sum of divergences (in the sense of vector analysis). It turns out that the theory without divergence- and coboundary-coupling is the most simple one in a quite technical sense. The proofs for the n-point distributions containing coboundary-couplings are given up to third or fourth order only, whereas the statements about the divergence-coupling are proven in all orders.
description: 22 pages. The paper is written in TEX. The necessary macros are included
High-Energy Cosmic Rays and Neutrinos from Gamma-Ray Bursts
Creators: name: Dermer, C.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: A complete model for the origin of high-energy >~10^{14} eV) cosmic rays from gamma-ray bursts (GRBs) and implications of this hypothesis are described. Detection of high-energy neutrinos from GRBs provide an unambiguous test of the model. Evidence for cosmic-ray acceleration in GRBs is suggested by the detection of anomalous gamma-ray components such as that observed from GRB 941017. Neutron beta-decay halos around star-forming galaxies such as the Milky Way are formed as a consequence of this model. Cosmic rays from GRBs in the Galaxy are unlikely to account for the ~10^{18} eV cosmic-ray excess reported by the Sydney University Giant Air Shower Recorder (SUGAR), but could contribute to past extinction events.
description: 8 pages, 4 figures, proceedings of the 4th Workshop Gamma-Ray Bursts in the Afterglow Era, Rome,18-22 October 2004. Editors: L. Piro, L. Amati, S. Covino, and B. Gendre. Il Nuovo Cimento, in press
Analysis and Implementation of Spatial Filters in the Quasi-Static Regime with Applications to Wireless Power Transfer
Creators: name: Rodriguez, Erik Saturnino Gamez
Publisher: name: University of Utah
Year: 2019
Subjects: Electrical engineering
Electromagnetics

description: More than a century ago, in his labs in Colorado Springs and New York, Nikola Tesla started experimenting with wireless power transfer (WPT). His ideas were ahead of his time, but they fell into obscurity shortly after his death. Nowadays, WPT is no longer thought of as science fiction: neural prostheses, wearables, cellphones, and even electric vehicles can be powered through WPT. In its most common implementation, WPT leverages the magnetic coupling between resonant transmitter and receiver coils to exchange energy. Considerable work is devoted to the design and optimization of WPT antennas; efficiently transmitting the required amount of power can only be accomplished when the coil coupling is in the right range. In this work, we explore the use of spatial filters in WPT systems. Spatial filters are capable of controlling the harmonic content of an incident wave: subwavelength focal spots, perfect lensing, and diffractionless beams are some of their uses. In the first part of this dissertation, the focus is on the analysis and design of a compact negative permeability metamaterial slab. Compared to other works in the literature, this slab is an extremely small fraction of the wavelength, and works at a low operating frequency. Analysis and experimental validation demonstrate that the resulting metamaterial sample can be used in a 2-coil WPT system to achieve large range and efficiency enhancements. In the second part of this dissertation, the analysis and implementation of holographic screens is presented. A method to reduce the fabrication complexity of the desired holographic screen while maintaining the fidelity of the prescribed field distribution is presented. We demonstrate our method through the analysis, design, and experimental validation of a nondiffractive beam launcher with a Bessel field distribution. Finally, we utilize the analysis and methods presented in this work to design an antenna capable of prescribing a uniform field distribution. Because of this property, this WPT antenna is capable of transmitting near constant power with near constant efficiency to the target receiver load, without the need of an adaptive compensation system.
title: Laboratory Experiments on Long Waves Interacting with Rigid Vertical Cylinders
Creators: name: Basile, R.
name: De Serio, F.
name: Raffaele, D.
Publisher: name: Utah State University
Year: 2022

description: The impact of waves caused by storm surges or floods could lead to significant damage to marine and fluvial structures. Hydraulic forces add significant hydrodynamic loads on bridges built in coastal and fluvial environments; therefore, the effect of the wave impact on bridge substructures must be properly considered for the safe and cost-effective design of the piers. The use of laboratory-scale models is a direct approach to investigate the effects of long waves on simple structures, mimicking bridge piers. The present study describes a laboratory-scale model, where the propagation of two different long waves in a flume, in the presence of two rigid cylinders, was investigated. The velocity measurements were acquired by the Particle Image Velocimetry (PIV) technique, providing instantaneous flow velocity vectors on 2D planes. For each experimental condition, the instantaneous velocity field close to the cylinders was analysed, in order i) to depict how it changes during the wave transit, and thus how the drag force acting on the cylinders could change, ii) to detect the spatial distributions of vorticity downstream. Some first interesting results have been obtained, showing a quite uniform distribution of the longitudinal velocity along the depth of the vertical plane upstream of the cylinders, with increasing values during the wave transit. No interactions in the central part of the flow downstream of the two cylinders was observed in the horizontal plane which are spaced approximately ten times their diameter. Finally, the vorticity has also been studied, displaying a phase-varying behaviour, which appears to lose symmetry during wave transit.
Regge trajectories of Excited Baryons, quark-diquark models and quark-hadron duality
Creators: name: Masjuan, Pere
name: Arriola, Enrique Ruiz
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The parton model relations in conjunction with quark-hadron duality in deep inelastic scattering suggests an asymptotic dominance of quark-diquark type of baryonic excited states with a radial Regge uniformly distributed mass squared spectrum $M_{n}^2 = μ^2 n + M_0^2$. We argue that this points to a lineary quark-diquark confining potential. We analyze the radial ($n$) and angular-momentum ($J$) Regge trajectories for all light-quark states with baryon number one listed in the 2016 edition of the Particle Data Tables. The parameters of the mass squared trajectories are obtained by linear regression assuming $ΔM_n^2 \sim M_n Γ_n $ weighted with the width $Γ_n$ of the resonance and the error analysis is carried out accordingly.
description: 6 pages, 3 figures
Coarsening and mechanics in the bubble model for wet foams
Creators: name: Khakalo, Kseniia
name: Baumgarten, Karsten
name: Tighe, Brian P.
name: Puisto, Antti
Publisher: name: arXiv
Year: 2017
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Aqueous foams are an important model system that displays coarsening dynamics. Coarsening in dispersions and foams is well understood in the dilute and dry limits, where the gas fraction tends to zero and one, respectively. However, foams are known to undergo a jamming transition from a fluid-like to a solid-like state at an intermediate gas fraction,$ϕ_c$. Much less is known about coarsening dynamics in wet foams near jamming, and the link to mechanical response, if any, remains poorly understood. Here, we probe coarsening and mechanical response using numerical simulations of a variant of the Durian bubble model for wet foams. As in other coarsening systems we find a steady state scaling regime with an associated particle size distribution. We relate the time-rate of evolution of the coarsening process to the wetness of the foam and identify a characteristic coarsening time that diverges approaching jamming. We further probe mechanical response of the system to strain while undergoing coarsening. There are two competing time scales, namely the coarsening time and the mechanical relaxation time. We relate these to the evolution of the elastic response and the mechanical structure.
description: 7 pages, 6 figures
Dynamic density functional theories for inhomogeneous polymer systems compared to Brownian dynamics simulations
Creators: name: Qi, Shuanhu
name: Schmid, Friederike
Publisher: name: arXiv
Year: 2017
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Dynamic density functionals (DDFs) are popular tools for studying the dynamical evolution of inhomogeneous polymer systems. Here, we present a systematic evaluation of a set of diffusive DDF theories by comparing their predictions with data from particle-based Brownian dynamics (BD) simulations for two selected problems: Interface broadening in compressible A/B homopolymer blends after a sudden change of the incompatibility parameter, and microphase separation in compressible A:B diblock copolymer melts. Specifically, we examine (i) a local dynamics model, where monomers are taken to move independently from each other, (ii) a nonlocal "chain dynamics" model, where monomers move jointly with correlation matrix given by the local chain correlator, and (iii,iv) two popular approximations to (ii), namely (iii) the Debye dynamics model, where the chain correlator is approximated by its value in a homogeneous system, and (iv) the computationally efficient "external potential dynamics" (EPD) model. With the exception of EPD, the value of the compressibility parameter has little influence on the results. In the interface broadening problem, the chain dynamics model reproduces the BD data best. However, the closely related EPD model produces large spurious artefacts. These artefacts disappear when the blend system becomes incompressible. In the microphase separation problem, the predictions of the nonlocal models (ii-iv) agree with each other and significantly overestimate the ordering time, whereas the local model (i) underestimates it. We attribute this to the multiscale character of the ordering process, which involves both local and global chain rearrangements. To account for this, we propose a mixed local/nonlocal DDF scheme which quantitatively reproduces all BD simulation data considered here.
description: 17 pages, 9 figures, Macromolecules, 2017
D-Brane Recoil and Logarithmic Operators
Creators: name: Kogan, Ian I.
name: Mavromatos, Nick E.
name: Wheater, John F.
Publisher: name: arXiv
Year: 1996
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We construct the pair of logarithmic operators associated with the recoil of a $D$-brane. This construction establishes a connection between a translation in time and a world-sheet rescaling. The problem of measuring the centre of mass coordinate of the $D$-brane is considered and the relation between the string uncertainty principle and the logarithmic operators is discussed.
description: 11 pages, LateX, no figures
Chaos and thermalization in small quantum systems
Creators: name: Polkovnikov, Anatoli
name: Sels, Dries
Publisher: name: arXiv
Year: 2017
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Chaos and ergodicity are the cornerstones of statistical physics and thermodynamics. While classically even small systems like a particle in a two-dimensional cavity, can exhibit chaotic behavior and thereby relax to a microcanonical ensemble, quantum systems formally can not. Recent theoretical breakthroughs and, in particular, the eigenstate thermalization hypothesis (ETH) however indicate that quantum systems can also thermalize. In fact ETH provided us with a framework connecting microscopic models and macroscopic phenomena, based on the notion of highly entangled quantum states. Such thermalization was beautifully demonstrated experimentally by A. Kaufman et. al. who studied relaxation dynamics of a small lattice system of interacting bosonic particles. By directly measuring the entanglement entropy of subsystems, as well as other observables, they showed that after the initial transient time the system locally relaxes to a thermal ensemble while globally maintaining a zero-entropy pure state.
description: Perspective
Electromagnetically induced transparency for Lambda - like systems with a structured continuum
Creators: name: Raczynski, A.
name: Rzepecka, M.
name: Zaremba, J.
name: Zielinska-Kaniasty, S.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Electric susceptibility of a laser-dressed atomic medium is calculated for a model Lambda - like system including two lower states and a continuum structured by a presence of an autoionizing state or a continuum with a laser-induced structure. Depending on the strength of a control field it is possible to obtain a significant reduction of the light velocity in a narrow frequency window in the conditions of a small absorption. A smooth transition is shown between the case of a flat continuum and that of a discrete state serving as the upper state of a Lambda system.
description: 6 pages, 5 figures
The power of the jets accelerated by the coronal magnetic field
Creators: name: Cao, Xinwu
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: It was suggested that the large scale magnetic field can be dragged inwards efficiently by the corona above the disc, i.e., the so called "coronal mechanism" (Beckwith, Hawley, \& Krolik 2009), which provides a way to solve the difficulty of field advection in a geometrically thin accretion disc. In this case, the magnetic pressure should be lower than the gas pressure in the corona. We estimate the maximal power of the jets accelerated by the magnetic field advected by the corona. The Blandford-Payne (BP) jet power is found always to be higher than the Blandford-Znajek (BZ) jet power, except for a rapidly spinning black hole with a>0.8. The maximal jet power is always low, less than 0.05 Eddington luminosity, even for an extreme Kerr black hole, which is insufficient for the observed strong jets in some blazars with jet power $\sim 0.1-1$ Eddington luminosity (or even higher). It implies that these powerful jets cannot be accelerated by the coronal field. We suggest that, the magnetic field dragged inward by the accretion disc with magnetically outflows may accelerate the jets (at least for the most powerful jets, if not all) in the blazars.
description: 4 pages, accepted by MNRAS, references updated
Nuclear fusion in dense matter: Reaction rate and carbon burning
Creators: name: Gasques, L. R.
name: Afanasjev, A. V.
name: Aguilera, E. F.
name: Beard, M.
name: Chamon, L. C.
name: Ring, P.
name: Wiescher, M.
name: Yakovlev, D. G.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: In this paper we analyze the nuclear fusion rate between equal nuclei for all five different nuclear burning regimes in dense matter (two thermonuclear regimes, two pycnonuclear ones, and the intermediate regime). The rate is determined by Coulomb barrier penetration in dense environments and by the astrophysical S-factor at low energies. We evaluate previous studies of the Coulomb barrier problem and propose a simple phenomenological formula for the reaction rate which covers all cases. The parameters of this formula can be varied, taking into account current theoretical uncertainties in the reaction rate. The results are illustrated for the example of the ^{12}C+^{12}C fusion reaction. This reaction is very important for the understanding of nuclear burning in evolved stars, in exploding white dwarfs producing type Ia supernovae, and in accreting neutron stars. The S-factor at stellar energies depends on a reliable fit and extrapolation of the experimental data. We calculate the energy dependence of the S-factor using a recently developed parameter-free model for the nuclear interaction, taking into account the effects of the Pauli nonlocality. For illustration, we analyze the efficiency of carbon burning in a wide range of densities and temperatures of stellar matter with the emphasis on carbon ignition at densities rho > 10^9 g/cc.
description: 22 pages, 6 figures, accepted for publication in PRC
An Examination of the Effects of Harsh Discipline and Infant Difficult Temperament on the Externalizing Behaviors of Maltreated Children
Creators: name: Weeks, Jessica Elizabeth
Publisher: name: University of Utah
Year: 2019
Subjects: Developmental psychology
Clinical psychology

description: Existing research consistently links difficult early temperament and later externalizing behavior problems; however, the literature has shown that parental discipline style can influence this relationship. There are few studies that have considered this interplay of temperament and parenting in high-risk populations, including children who have been maltreated. Maltreatment alone is a public health concern and a source of trauma for those who are affected. Further, child maltreatment has been shown to place a child at greater risk for developing behavior problems. The current study examined the influence of harsh discipline and infant difficult temperament on the development of child externalizing behavior problems in an existing longitudinal sample of 1,148 infants who were the subjects of child welfare investigations (the National Survey of Child and Adolescent Well Being, NSCAW). Specifically, the examiner sought to determine if difficult temperament exacerbates the risk of harsh discipline or if harsh discipline mediates the association between difficult infant temperament and externalizing behavior problems in early childhood. Children included in the subsample for the current study were between 0 and 23 months of age at Time 1 data collection. Infant difficult temperament was measured at Time 1 with the Infant Behavior Questionnaire (IBQ) and harsh discipline was measured at Time 1 with the Parent-Child Conflict Tactics Scale (CTS-PC). The child's primary caregiver completed both measures. In the NSCAW sample, Time 1 data collection interviews took place approximately 3 to 6 months after the close of the Child Protective Services investigation. To measure childhood externalizing behaviors, the externalizing scale from the Child Behavior Checklist (CBCL) was used. Parents rated children's behavior on the CBCL 5 years after the close of the investigation, when children were between the ages of 5 and 7 years. Multiple regression analyses showed that both difficult temperament and harsh discipline predicted worse externalizing behavior outcomes; however, these two factors did not show a significant interaction. Mediation analyses further demonstrated an indirect effect through harsh discipline in the association between difficult temperament and externalizing problems. Findings extend the literature regarding infant difficult temperament and harsh discipline to children who have experienced maltreatment and help to illuminate areas that can guide early intervention efforts for children at risk.
Renormalization Flow, Duality, and Supersymmetry Breaking in Some N=1 Product-Group Theories
Creators: name: Poppitz, Erich
Publisher: name: arXiv
Year: 1996
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We discuss the renormalization group flow, duality, and supersymmetry breaking in N = 1 supersymmetric SU(N)xSU(M) gauge theories.
description: Talk given at SUSY'96; 3 pages, LateX, style-, ps-files included