cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Low-energy electric and magnetic dipole excitations in $^{52}$Cr
Creators: name: Tsoneva, N.
name: Bhike, M.
name: Krishichayan, K.
name: Lenske, H.
name: Rusev, G.
name: Tonchev, A.
name: Tornow, W.
Publisher: name: GSI Helmholtzzentrum fuer Schwerionenforschung, Darmstadt
Year: 2015
Subjects: Physics

description: GSI Scientific Report 2014 - GSI Report 2015-1
For the more easy recovery of debts in His Majesty’s plantations : credit and conflict in Upper Canada, 1788-1809
Creators: name: Pearlston, Karen
Publisher: name: University of British Columbia
Year: 2009

description: This thesis is concerned with the relationship between creditor/debtor law and broader political, economic, and social relations in Upper Canada before 1812. The research reviews the history of credit relations in early Upper Canada through a critical reassessment of both the historiographic debates and available primary legal and archival sources. Recent historical writing, in seeking out the community based nature of creditor/debtor relations has often tended to overlook the extent to which social, political, and economic conflicts were also played out in the arena of credit and debt. In early Upper Canada, matters relating to credit and debt were not infrequently the focus of conflicts about constitutionalism and the rights of colonial subjects. The thesis argues for a re-framing of the study of creditor/debtor relations to take account of the overall context of economic inequality. Feminist historical and theoretical work is drawn upon to expand conventional understandings of the economic, and to argue that local or communal based relations are not always consensual. The thesis draws a connection between social inequality, political repression, constitutional politics and the private law of property, credit, and debt. It asserts that early Upper Canadian creditor/ debtor relations were expressive of the struggle over the kinds of institutions that would represent the new polity, and of a sensibility among at least some portion of the population that the rule of law should apply to a wider range of people than those who made up the elite. It is found that the role of certain financial instruments and the contents of certain court records has been misunderstood. These findings change our understanding of the 1794 court reforms in Upper Canada, which established an English-style Court of King's Bench. It is also found that debtor/creditor law, in particular the seizure of land for debt in Upper Canada (a remedy that was not available in England) impacted upon the constitutional politics of the time.
Comunicación virtual, pluralidad de contenidos y escenarios de desinformación
Creators: name: Rocío, Elizalde Robles
Publisher: name: Zenodo
Year: 2021
Subjects: Desinformación, Pluralismo de contenidos, políticas de comunicación, industrias culturales, fake news.

description: Una idea general bordea al pluralismo de contenidos con la desinformación: su incidencia en los sistemas democráticos. Para Tomás Ferrán (2004) el pluralismo en los sistemas de comunicación emerge como un valor fundamental para la democracia; mientras que la desinformación, según Romero 2013, convierte a la sociedad en víctima de la manipulación del mensaje público. Desde este contexto, se intenta una correlación entre el pluralismo de contenidos, las industrias culturales e informativas, las políticas de comunicación y los escenarios que introducen a la desinformación como un problema comunicativo que demanda una análisis desde las propias dinámicas de producción de contenido, circulación y políticas de la comunicación que abarquen modelos digitales de interacción.
Simulations of cosmic ray feedback by AGN in galaxy clusters
Creators: name: Sijacki, D.
name: Pfrommer, C.
name: Springel, V.
name: Ensslin, T. A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We investigate a numerical model for AGN feedback where for the first time a relativistic particle population in AGN-inflated bubbles is followed within a full cosmological context. In our high-resolution simulations of galaxy cluster formation, we assume that BH accretion is accompanied by energy feedback that occurs in two different modes, depending on the accretion rate itself. Unlike in previous work, we inject a non-thermal particle population of relativistic protons into the AGN bubbles, instead of adopting a purely thermal heating. We then follow the subsequent evolution of the cosmic ray (CR) plasma inside the bubbles, considering both its hydrodynamical interactions and dissipation processes relevant for the CR population. Due to the different buoyancy of relativistic plasma and the comparatively long CR dissipation timescale we find substantial changes in the evolution of clusters as a result of CR feedback. In particular, the non-thermal population can provide significant pressure support in central cluster regions at low thermal temperatures, providing a natural explanation for the decreasing temperature profiles found in cool core clusters. At the same time, the morphologies of the bubbles and of the induced X-ray cavities show a striking similarity to observational findings. AGN feedback with CRs also proves efficient in regulating cluster cooling flows so that the total baryon fraction in stars becomes limited to realistic values of the order of 10%. We find that the partial CR support of the intracluster gas also affects the expected signal of the thermal Sunyaev-Zel'dovich effect, with typical modifications of the integrated Compton-y parameter within the virial radius of the order of 10%. [Abridged]
description: 15 pages, 7 figures, minor revisions, MNRAS accepted
GW190521 formation scenarios via relativistic accretion
Creators: name: Cruz-Osorio, Alejandro
name: Lora-Clavijo, Fabio D.
name: Herdeiro, Carlos
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The recent gravitational wave transient GW190521 has been interpreted by the LIGO-Virgo collaboration (LVC) as sourced by a binary black hole (BH) merger. According to the LVC parameter estimation, at least one of these progenitors falls into the so-called pair-instability supernova mass gap. This raises the important question of how and when these progenitors formed. In this paper we use an accretion model with super-Eddington mass accretion rate obtained from General Relativity hydrodynamics simulations to analyse the scenario wherein the GW190521 original progenitors (OPs) formed at lower masses (and spins) and grew to their estimated LVC parameters by relativistic accretion. We consider that the environment wherein the binary is immersed has density gradients as well as a dependence on the Mach number of the gas. Taking the LVC parameter estimation at $z=0.82$ as the endpoint of the accretion evolution, we estimate the initial masses and spins of the OPs at three different red-shifts $z=100, \ 50$, and $20$. We found three distinct possible types of OPs: $(i)$ $10^{-4} M_{\odot} - 3 M_{\odot}$ almost non-rotating (with Kerr spin parameter $a_{\star}< 10^{-2}$) primordial BHs; $(ii)$ $3 M_{\odot} - 40M_{\odot}$ slowly rotating ($ 10^{-2} < a_{\star} < 0.5$) stellar mass BHs; $(iii)$ $40M_{\odot} - 70M_{\odot}$ BHs with a moderate spin parameter $a_{\star}\sim 0.5$, which could originate from the collapse of high mass Pop III stars. The mass spread is due to varying the density gradient and the relativistic Mach number of the cosmic plasma; the variation of the masses due to the origin at different red-shifts, on the other hand, is negligible, $\sim 2\%$ ...
description: 16 pages, 5 figures, 1 table
Trapped and Bound Classical States of an Electric Dipole in Magnetic Field
Creators: name: Troncoso, Paulina I.
name: Curilef, Sergio
Publisher: name: arXiv
Year: 2005
Subjects: subject: Classical Physics (physics.class-ph)
subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences

description: In the present work, we study the classical behavior of an electric dipole in presence of an external uniform magnetic field. We derive equations and constants of motion from the Lagrangian formulation. We obtain an infinitely periodic effective potential that describes a rotational motion. The problem is not directly separable in relative and center of mass variables; even though, we are able to write the energy of the system as a function of an only term, the relative variable. We define another constant of motion, which couples the relative with the center of mass variables. We describe conditions for bound states of the dipole. In addition, we discuss the problem in the approximation of small oscillations. Finally, we explore the existence of a possible family of trapped states in a region of the space where there are no classical turning points.
description: 11 pages, 2 figures
Shielding and compton supression capabilities of the EUROBALL BGO back-catchers
Creators: name: Lizarazo, C.
name: Li, G.
name: Schaffner, H.
name: Kojouharov, I.
name: Gerl, J.
name: Pietralla, N.
Publisher: name: GSI Helmholtzzentrum fuer Schwerionenforschung, Darmstadt
Year: 2015
Subjects: Physics

description: GSI Scientific Report 2014 - GSI Report 2015-1
Total kinetic energy release in spontaneous fission of $^{255,256,258}$Rf
Creators: name: Hessberger, F.
name: Ackermann, D.
name: Andel, B.
name: Antalic, S.
name: Droese, C.
name: Even, J.
name: Kalaninova, Z.
name: Laatiaoui, M.
name: Piot, J.
name: Vostinar, M.
Publisher: name: GSI Helmholtzzentrum fuer Schwerionenforschung, Darmstadt
Year: 2015
Subjects: Physics

description: GSI Scientific Report 2014 - GSI Report 2015-1
M2-branes stretching between M5-branes
Creators: name: Nogradi, Daniel
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: A generalization of Nahm's equation has been recently conjectured by Basu and Harvey to be the BPS condition describing the bound state of a stack of M2-branes ending on an M5-brane. In this note exact solutions are presented for the proposed BPS equation - which is from the point of view of the M2-brane world-volume dynamics - with boundary conditions appropriate for M2-branes stretching between two M5-branes. Unfortunately, since the action for multiple M5-branes or for multiple coincident M2-branes is not known, one can only resort to consistency checks of the proposal instead of a direct comparison of the M2 and M5 world-volume point of views. The existence of our solutions should be seen as such a consistency check of the conjecture, and also as a source of new insight into the dynamics of multiple M2 and M5-branes.
description: 11 pages, typos corrected, references added
Universal translational velocity of vortex rings behind conical objects
Creators: name: de Guyon, Guillaume
name: Mulleners, Karen
Publisher: name: arXiv
Year: 2020
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: Ring vortices are efficient at transporting fluid. They are often produced by ejecting a volume of fluid through a circular orifice. The impulse given to the vortex rings results in a propulsive force on the generator. Propulsive vortex rings have been widely studied and characterised. After four convective times, the vortex moves faster than the shear layer it originates from, and separates. This separation corresponds to a maximum in circulation and a maximal spread of the vorticity, quantified by the non-dimensional energy. The simultaneity of these three events obfuscates the causality between them. To analyse the temporal evolution of the non-dimensional energy of ring vortices independent of their separation, we analyse the development of vortices generated in the wake of cones. Cones with different apertures and diameters were accelerated from rest to produce a wide variety of vortex rings and their energy, circulation, and velocity were extracted based on time-resolved velocity field measurements. The rings that form behind the cones have a self-induced velocity that causes them to follow the cone and they continue to grow as the cone travels well beyond the limiting vortex formation times scales observed for propulsive vortices. The non-dimensional circulation, based on the vortex diameter, and the non-dimensional energy of the drag vortex rings converge after three convective times to values comparable to their propulsive counterparts. This result proves that vortex pinch-off does not cause the non-dimensional energy to reach a minimum value. The limiting values of the non-dimensional circulation and energy are mostly independent of the cone geometry and translational velocity and fall within an interval of 10% around the mean value. With only 6% of variation, the velocity of the vortex is the most unifying quantity that governs the formation of vortex rings behind cones.
Interplay between magnetic anisotropy and interlayer coupling in nanosecond magnetization reversal of spin-valve trilayers
Creators: name: Vogel, Jan
name: Kuch, Wolfgang
name: Camarero, Julio
name: Fukumoto, Keiki
name: Pennec, Yan
name: Pizzini, Stefania
name: Bonfim, Marlio
name: Petroff, Frédéric
name: Fontaine, Alain
name: Kirschner, Jürgen
Publisher: name: arXiv
Year: 2005
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: The influence of magnetic anisotropy on nanosecond magnetization reversal in coupled FeNi/Cu/Co trilayers was studied using a photoelectron emission microscope combined with x-ray magnetic circular dicroism. In quasi-isotropic samples the reversal of the soft FeNi layer is determined by domain wall pinning that leads to the formation of small and irregular domains. In samples with uniaxial magnetic anisotropy, the domains are larger and the influence of local interlayer coupling dominates the domain structure and the reversal of the FeNi layer.
Non-Adiabatic Potential-Energy Surfaces by Constrained Density-Functional Theory
Creators: name: Behler, Joerg
name: Delley, Bernard
name: Reuter, Karsten
name: Scheffler, Matthias
Publisher: name: arXiv
Year: 2006
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Non-adiabatic effects play an important role in many chemical processes. In order to study the underlying non-adiabatic potential-energy surfaces (PESs), we present a locally-constrained density-functional theory approach, which enables us to confine electrons to sub-spaces of the Hilbert space, e.g. to selected atoms or groups of atoms. This allows to calculate non-adiabatic PESs for defined charge and spin states of the chosen subsystems. The capability of the method is demonstrated by calculating non-adiabatic PESs for the scattering of a sodium and a chlorine atom, for the interaction of a chlorine molecule with a small metal cluster, and for the dissociation of an oxygen molecule at the Al(111) surface.
description: 11 pages including 7 figures; related publications can be found at http://www.fhi-berlin.mpg.de/th/th.html
Photometric redshifts for galaxies in the Subaru Hyper Suprime-Cam and unWISE and a catalogue of identified clusters of galaxies
Creators: name: Wen, Z. L.
name: Han, J. L.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We first present a catalogue of photometric redshifts for 14.68 million galaxies derived from the 7-band photometric data of Hyper Suprime-Cam Subaru Strategic Program and the Wide-field Infrared Survey Explorer using the nearest-neighbour algorithm. The redshift uncertainty is about 0.024 for galaxies of z<0.7, and steadily increases with redshift to about 0.11 at z~2. From such a large data set, we identify 21,661 clusters of galaxies, among which 5537 clusters have redshifts z>1 and 642 clusters have z>1.5, significantly enlarging the high redshift sample of galaxy clusters. Cluster richness and mass are estimated, and these clusters have an equivalent mass of M_{500} > 0.7*10^{14} Msun. We find that the stellar mass of the brightest cluster galaxies (BCGs) in each richness bin does not significantly evolve with redshift. The fraction of star-forming BCGs increases with redshift, but does not depend on cluster mass.
description: 16 pages, 18 figures, 2 tables, updated version after proof checking, online data available
völkerwanderungszeitliche Zaumzeug aus Ungarn im Berliner Museum für Vor- und Frühgeschichte
Creators: name: Piros, Réka Ágnes
Publisher: name: Acta Praehistorica et Archaeologica
Year: 2022

description: Acta Praehistorica et Archaeologica, Bd. 48 (2016)
($11^-$) isomeric state in $^{194}$Po
Creators: name: Andel, B.
name: Andreyev, A.
name: Antalic, S.
name: Hessberger, F.
name: Ackermann, D.
name: Hofmann, S.
name: Huyse, M.
name: Kalaninova, Z.
name: Kindler, B.
name: Lommel, B.
name: Mann, R.
name: Nishio, K.
name: Page, R.
name: Sulignano, B.
name: Van Duppen, P.
Publisher: name: GSI Helmholtzzentrum fuer Schwerionenforschung, Darmstadt
Year: 2015
Subjects: Physics

description: GSI Scientific Report 2014 - GSI Report 2015-1
Alpha decay of $^{227}$U and excited levels in $^{223}$Th studied at SHIP
Creators: name: Kalaninova, Z.
name: Antalic, S.
name: Hessberger, F.
name: Ackermann, D.
name: Andel, B.
name: Kindler, B.
name: Laatiaoui, M.
name: Lommel, B.
name: Maurer, J.
Publisher: name: GSI Helmholtzzentrum fuer Schwerionenforschung, Darmstadt
Year: 2015
Subjects: Physics

description: GSI Scientific Report 2014 - GSI Report 2015-1
Addressing the social inequities of vaccination: an imperative to close the gap
Creators: name: Marques, Mathew
name: Sheel, M
Publisher: name: La Trobe
Year: 2024
Subjects: classificationCode: 4206
subject: Public health
classificationCode: 4203
subject: Health services and systems
classificationCode: 4202
subject: Epidemiology

description: No description supplied
The Intrinsic Properties of SDSS Galaxies
Creators: name: Maller, Ariyeh H.
name: Berlind, Andreas A.
name: Blanton, Michael R.
name: Hogg, David W.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The observed properties of galaxies vary with inclination; for most applications we would rather have properties that are independent of inclination, intrinsic properties. One way to determine inclination corrections is to consider a large sample of galaxies, study how the observed properties of these galaxies depend on inclination and then remove this dependence to recover the intrinsic properties. We perform such an analysis for galaxies selected from the Sloan Digital Sky Survey which have been matched to galaxies from the Two-Micron All Sky Survey. We determine inclination corrections for these galaxies as a function of galaxy luminosity and Sersic index. In the g-band these corrections reach as as high as 1.2 mag and have a median value of 0.3 mag for all galaxies in our sample. We find that the corrections show little dependence on galaxy luminosity, except in the $u$ band, but are strongly dependent on galaxy Sersic index. We find that the ratio of red-to-blue galaxies changes from 1:1 to 1:2 when going from observed to intrinsic colors for galaxies in the range -22.75 < M_K < -17.75. We also discuss how survey completeness and photometric redshifts should be determined when taking into account that observed and intrinsic properties differ. Finally, we examine whether previous determinations of stellar mass give an intrinsic quantity or one that depends on galaxy inclination.
description: 11 pages, 12 figures submitted to ApJ
Rabi oscillations, entanglement and teleportation in the anti-Jaynes-Cummings model
Creators: name: Mayero, Christopher
name: Omolo, Joseph Akeyo
name: Okeyo, Onyango Stephen
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: This paper provides a scheme for generating maximally entangled qubit states in the anti-Jaynes-Cummings interaction mechanism, so called entangled anti-polariton qubit states. We demonstrate that in an initial vacuum-field, Rabi oscillations in a cavity mode in the anti-Jaynes-Cummings interaction process, occur in the reverse sense relative to the Jaynes-Cummings interaction process and that time evolution of entanglement in the anti-Jaynes-Cummings interaction process takes the same form as in the Jaynes-Cummings interaction process. With the generated anti-polariton qubit state as one of the initial qubits, we present quantum teleportation of an atomic quantum state by applying entanglement swapping protocol achieving an impressive maximal teleportation fidelity~$F_ρ=1$.
description: 11 pages and 6 figures
Pulsational pair-instability and the mass gap of Population III Black Holes: Effects of overshooting
Creators: name: Umeda, Hideyuki
name: Yoshida, Takashi
name: Nagele, Chris
name: Takahashi, Koh
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Since the discovery of GW190521, several proposals have been put forward to explain the formation of a black hole in the mass gap caused by (pulsational) pair-instability, $M = 65-130 M_\odot$. We calculate the mass ejection of Pop III stars by the pulsational pair-instability (PPI) process using a stellar evolution and hydrodynamical code. If a relatively small, but reasonable value is adopted for the overshooting parameter, the stars do not become red super giants during the PPI phase. We show that in this case most of the hydrogen envelope remains after the mass ejection by PPI. We find that the BH mass could be at most $M = 109 M_\odot$ below the mass range of pair-instability supernovae.
Envoy verso : in : attraverso : da : Giacomo Joyce
Creators: name: Frattaroli, Enrico
Publisher: name: Biblioteca di Studi di Filologia Moderna: Series, Journals and Workshop
Year: 2015

description: Envoy abbraccia e, al tempo stesso, scompagina la convenzione critica e pone il problema della sua stessa essenza. Saggio? Memoria d’artista? Traduzione commentata? Ricostruzione rimemorativa di un percorso in cui arte e vita s’intrecciano e mutualmente si implicano? Forse in questo suo essere esatto e refrattario, rigoroso e libero, questo e quello, né l’uno né l’altro, Envoy racchiude in sé l’essenza di Giacomo Joyce, ne riproduce e trasmette il senso profondo. Ambiguità cosciente, fedele solo alla legge dell’ibridismo, della contaminazione, dell’impurità: adultery of wisdom? perfect blend?
description: Studi irlandesi. A Journal of Irish Studies, Quaderni di SiJIS, 2 (2015): Envoy verso : in : attraverso : da : Giacomo Joyce
Curie law, entropy excess, and superconductivity in heavy fermion metals and other strongly interacting Fermi liquids
Creators: name: Khodel, V. A.
name: Zverev, M. V.
name: Yakovenko, Victor M.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Low-temperature thermodynamic properties of strongly interacting Fermi liquids with fermion condensate are investigated. We demonstrate that the spin susceptibility of these systems exhibits the Curie-Weiss law, and the entropy contains a temperature-independent term. The excessive entropy is released at the superconducting transition, enhancing the specific heat jump Delta C and rendering it proportional to the effective Curie constant. The theoretical results are favorably compared with the experimental data on the heavy fermion metal CeCoIn5, as well as He-3 films.
description: 4 pages, 2 figures. V.2: a reference added; minor changes as in the published version
title: Τοπογραφικοί υπολογισμοί μέσω φωτογραφιών σεληνιακής επιφανείας με χρήση τηλεσκοπίου
title: Topographic calculations through lunar surface photographs using a telescope
titleType: AlternativeTitle
Creators: name: Ρεκούνας, Σπυρίδων
Publisher: name: Πανεπιστήμιο Δυτικής Αττικής
Year: 2021
Subjects: Σελήνη
Τηλεσκόπιο

description: Με το τρίπτυχο Σελήνη, ηλιακή ακτινοβολία, και φωτογραφική μηχανή θα προσεγγίσουμε διαδικασίες απεικόνισης ειδώλων της σεληνιακής επιφανείας και εκμαίευση συμπερασμάτων μέσω έμμεσων μετρήσεων. Στην αντίπερα όχθη από τους απανταχού καλλιτέχνες, εδώ θα αναφερθούμε σε όργανα απεικόνισης, μεθόδους καταγραφής και επεξεργασίας εικόνας ώστε να επιβεβαιωθούν οι σχετικοί κανόνες οπτικής και φύσης του φωτός.
$\mathbb{Z}_N$ lattice gauge theory in a ladder geometry
Creators: name: Nyhegn, Jens
name: Chung, Chia-Min
name: Burrello, Michele
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: Quantum Gases (cond-mat.quant-gas)
subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: Under the perspective of realizing analog quantum simulations of lattice gauge theories, ladder geometries offer an intriguing playground, relevant for ultracold atom experiments. Here, we investigate Hamiltonian lattice gauge theories defined in two-leg ladders. We consider a model that includes both gauge boson and Higgs matter degrees of freedom with local $\mathbb{Z}_N$ gauge symmetries. We study its phase diagram based on both an effective low-energy field theory and density matrix renormalization group simulations. For $N\ge 5$, an extended gapless Coulomb phase emerges, which is separated by a Berezinskii-Kosterlitz-Thouless phase transition from the surrounding gapped phase. Besides the traditional confined and Higgs regimes, we also observe a novel quadrupolar region, originated by the ladder geometry.
description: 31 pages, 20 figures; published version with additional appendix
Neue Erkenntnisse zur Entdeckungsgeschichte des urnenfelderzeitlichen Hortfundes „Moigrad I“
Creators: name: Prohászka, Péter
Publisher: name: Acta Praehistorica et Archaeologica
Year: 2022

description: Acta Praehistorica et Archaeologica, Bd. 48 (2016)
First measurement of the strange particles Rcp nuclear modification factors in heavy-ion collisions at the SPS
Creators: name: Bruno, G. E.
name: Dainese, A.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The NA57 experiment has measured the pt distributions of K0s, Lambda, and antiLambda particles in fixed-target Pb-Pb interactions at sqrt(s_{NN})=17.3 GeV as a function of the collision centrality. In this paper we study the central-to-peripheral nuclear modification factors and compare them to other measurements and to theoretical predictions.
description: Contribution to the poster session of the Quark Matter 2005 Conference. To be published in Acta Physica Hungarica A, Heavy Ion Physics
Hayden-Preskill decoding from noisy Hawking radiation
Creators: name: Bao, Ning
name: Kikuchi, Yuta
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In the Hayden-Preskill thought experiment, the Hawking radiation emitted before a quantum state is thrown into the black hole is used along with the radiation collected later for the purpose of decoding the quantum state. A natural question is how the recoverability is affected if the stored early radiation is damaged or subject to decoherence, and/or the decoding protocol is imperfectly performed. We study the recoverability in the thought experiment in the presence of decoherence or noise in the storage of early radiation.
description: 19 pages, 7 figures; clarifying comments and references added
Background Independence and Asymptotic Safety in Conformally Reduced Gravity
Creators: name: Reuter, Martin
name: Weyer, Holger
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We analyze the conceptual role of background independence in the application of the effective average action to quantum gravity. Insisting on a background independent renormalization group (RG) flow the coarse graining operation must be defined in terms of an unspecified variable metric since no rigid metric of a fixed background spacetime is available. This leads to an extra field dependence in the functional RG equation and a significantly different RG flow in comparison to the standard flow equation with a rigid metric in the mode cutoff. The background independent RG flow can possess a non-Gaussian fixed point, for instance, even though the corresponding standard one does not. We demonstrate the importance of this universal, essentially kinematical effect by computing the RG flow of Quantum Einstein Gravity in the ``conformally reduced'' Einstein--Hilbert approximation which discards all degrees of freedom contained in the metric except the conformal one. Without the extra field dependence the resulting RG flow is that of a simple $ϕ^4$-theory. Including it one obtains a flow with exactly the same qualitative properties as in the full Einstein--Hilbert truncation. In particular it possesses the non-Gaussian fixed point which is necessary for asymptotic safety.
description: 4 figures,
State Predictive Information Bottleneck
Creators: name: Wang, Dedi
name: Tiwary, Pratyush
Publisher: name: arXiv
Year: 2020
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Biological Physics (physics.bio-ph)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: The ability to make sense of the massive amounts of high-dimensional data generated from molecular dynamics (MD) simulations is heavily dependent on the knowledge of a low dimensional manifold (parameterized by a reaction coordinate or RC) that typically distinguishes between relevant metastable states and which captures the relevant slow dynamics of interest. Methods based on machine learning and artificial intelligence have been proposed over the years to deal with learning such low-dimensional manifolds, but they are often criticized for a disconnect from more traditional and physically interpretable approaches. To deal with such concerns, in this work, we propose a deep learning based State Predictive Information Bottleneck (SPIB) approach to learn the RC from high dimensional molecular simulation trajectories. We demonstrate analytically and numerically how the RC learnt in this approach is deeply connected to the committor in chemical physics, and can be used to accurately identify transition states. A crucial hyperparameter in this approach is the time-delay, or how far into the future the algorithm should make predictions about. Through careful comparisons for benchmark systems, we demonstrate that this hyperparameter choice gives useful control over how coarse-grained we want the metastable state classification of the system to be. We thus believe that this work represents a step forward in systematic application of deep learning based ideas to molecular simulations in a way that bridges the gap between artificial intelligence and traditional chemical physics.
description: 11 pages, 13 figures
Spring hoeing (selected from Hu County peasant painting exhibition) (春锄 (选自户县农民画展))
Creators: name: Li Fenglan 李凤兰
Publisher: name: University of Victoria Libraries
Year: 2022
Subjects: subject: Collective farms
valueUri: http://id.worldcat.org/fast/867364
subject: Agriculture
valueUri: http://id.worldcat.org/fast/801355
subject: Women
valueUri: http://id.worldcat.org/fast/1176568
subject: Agriculture
subject: Women In The Workforce
subject: Hu County Peasant Painting

description: Created by Li Fenglan, Party branch member and cotton group team-leader, Hancun brigade in Guangming commune. Price: 11 fen
Quadrupole absorption rate for atoms in circularly-polarized optical vortices
Creators: name: Bougouffa, Smail
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Twisted light beams, or optical vortices, have been used to drive the circular motion of microscopic particles in optical tweezers and have been shown to generate vortices in quantum gases. Recent studies have established that electric quadrupole interactions can mediate an orbital angular momentum exchange between twisted light and the electronic degrees of freedom of atoms. Here we consider a quadrupole atomic transition mediated by a circularly-polarized optical vortex. We evaluate the transfer rate of the optical angular momentum to a $Ca^+$ ion involving the $4^2S_{1/2}\rightarrow 3^2D_{5/2}$ quadrupole transition and explain how the polarization state and the topological charge of the vortex beam determine the selection rules.
description: 13 pages, 4 figures. arXiv admin note: substantial text overlap with arXiv:2007.04021
Parity effect and spontaneous currents in superconducting nanorings
Creators: name: Sharov, Sergei V.
name: Zaikin, Andrei D.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: New physical effects emerge from an interplay between the electron parity number and persistent currents in superconducting nanorings. An odd electron, being added to the ring, produces a countercurrent which may substantially modify the ground state properties of the system. In superconducting nanorings with an embedded normal metal layer a novel ``$π/N$-junction'' state can occur for the odd number of electrons. Changing this number from even to odd yields spontaneous supercurrent in the ground state of such rings without any externally applied magnetic flux. Further peculiar features of the parity effect are expected in structures with resonant electron transport across the weak link.
description: 9 pages, 5 figures. Invited talk at the International Conference "Frontiers of Quantum and Mesoscopic Thermodynamics", Prague, July 2004
แอม วันเดอร์ริ่ง : ต้นแบบระบบจัดการพฤติกรรมการเดินหลงโดยใช้เทคนิคกระแสข้อมูลภูมิสารสนเทศ
Creators: name: สุรศักดิ์  วาจี
name: กรวัสส์  ธณะทรัพย์จินดา
name: วัศวี  แสนศรีมหาชัย
Publisher: name: Industrial Technology Lampang Rajabhat University
Year: 2015
Subjects: Wandering, Dementia, Stream processing

description: 2, 8, วารสารวิชาการคณะเทคโนโลยีอุตสาหกรรม  มหาวิทยาลัยราชภัฏลำปาง
ผลของคลื่นความถี่อัลทราโซนิคส์และเวลาต่อประสิทธิภาพในการล้างใบเลื่อยลันดา
Creators: name: เอกรัฐ  อินต๊ะวงศา
Publisher: name: Industrial Technology Lampang Rajabhat University
Year: 2015
Subjects: Handsaw blade, Ultrasonic cleaning, Frequency and time, Cleaning efficiency

description: 2, 8, วารสารวิชาการคณะเทคโนโลยีอุตสาหกรรม  มหาวิทยาลัยราชภัฏลำปาง
Hyperoctahedral Homology for Involutive Algebras
Creators: name: Graves, Daniel
Publisher: name: arXiv
Year: 2020
Subjects: subject: Algebraic Topology (math.AT)
subject: FOS: Mathematics
subject: 55N35, 13D03, 55U15, 55P47

description: Hyperoctahedral homology is the homology theory associated to the hyperoctahedral crossed simplicial group. It is defined for involutive algebras over a commutative ring using functor homology and the hyperoctahedral bar construction of Fiedorowicz. The main result of the paper proves that hyperoctahedral homology is related to equivariant stable homotopy theory: for a discrete group of odd order, the hyperoctahedral homology of the group algebra is isomorphic to the homology of the fixed points under the involution of an equivariant infinite loop space built from the classifying space of the group.
description: 21 pages. To appear in Homology, Homotopy and Applications
The Reddening of Red Supergiants: When Smoke Gets In Your Eyes
Creators: name: Massey, Philip
name: Plez, Bertrand
name: Levesque, Emily M.
name: Olsen, K. A. G.
name: Clayton, Geoffrey
name: Josselin, Eric
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Deriving the physical properties of red supergiants (RSGs) depends upon accurate corrections for reddening by dust. We use our recent modeling of the optical spectra of RSGs to address this topic. We find: (1) Previous broad-band studies have underestimated the correction for extinction in the visible, and hence the luminousities, if derived from V. (2) A significant fraction of RSGs in Galactic OB associations and clusters show up to several magnitudes of excess visual extinction compared to OB stars in the same regions; we argue that this is likely due to circumstellar dust around the RSGs. (3) RSGs contribute dust grains at the rate of $3 \times 10^{-8} M_\odot$ yr$^{-1}$ kpc$^{-2}$ in the solar neighborhood, comparable to what we estimate for late-type WC Wolf-Rayet stars, $1 \times 10^{-7} M_\odot$ yr$^{-1}$ kpc$^{-2}$. In the solar neighborhood this represents only a few percent of the dust production (which is dominated by low-mass AGBs), but we note that in low-metallicity starbursts, dust production by RSGs would likely dominate over other sources.
description: Accepted by the Astrophysical Journal
Chemical study of Fl, Cn, their lighter homologs and Rn at TASCA
Creators: name: Yakushev, A.
name: Lens, L.
name: Düllmann, C. E.
name: Ackermann, D.
name: Asai, M.
name: Ballof, J.
name: Block, M.
name: Brand, H.
name: Cox, D. M.
name: Despotopulos, J.
name: Di Nitto, A.
name: Eberhardt, K.
name: Even, J.
name: Fan, F.
name: Golubev, P.
name: Haba, H.
name: Hartmann, Willi
name: Herzberg, R.
name: Hessberger, F.
name: Hoffmann, J.
name: Hübner, A.
name: Jäger, E.
name: Jadambaa, K.
name: Kindler, B.
name: Kratz, J. V.
name: Krier, J.
name: Kurz, N.
name: Lahiri, S.
name: Lommel, B.
name: Maiti, M.
name: Mistry, A.
name: Mokry, C.
name: Moody, K.
name: Nagame, Y.
name: Omtvedt, J. P.
name: Papadakis, P.
name: Qin, Z.
name: Rudolph, D.
name: Runke, J.
name: Rusanov, I.
name: Sarmiento, L. G.
name: Sato, T.
name: Schädel, M.
name: Scharrer, P.
name: Schausten, B.
name: Shaughnessy, D.
name: Steiner, J.
name: Thörle-Pospiech, P.
name: Trautmann, N.
name: Uusitalo, J.
name: Ward, D.
name: Wegrzecki, M.
name: Whiel, N.
name: Yakusheva, V.
Publisher: name: GSI Helmholtzzentrum fuer Schwerionenforschung, Darmstadt
Year: 2015
Subjects: Physics

description: GSI Scientific Report 2014 - GSI Report 2015-1
Spacetime Quantum Reference Frames and superpositions of proper times
Creators: name: Giacomini, Flaminia
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In general relativity, the description of spacetime relies on idealised rods and clocks, which identify a reference frame. In any concrete scenario, reference frames are associated to physical systems, which are ultimately quantum in nature. A relativistic description of the laws of physics hence needs to take into account such quantum reference frames (QRFs), through which spacetime can be given an operational meaning. Here, we introduce the notion of a spacetime QRF, associated to a quantum particle in spacetime. Such formulation has the advantage of treating space and time on equal footing, and of describing the dynamical evolution of a set of quantum systems from the perspective of another quantum system, where the evolution parameter coincides with the proper time of the particle taken as the QRF. Crucially, the proper times in two different QRFs are not related by a standard transformation, but they might be in a quantum superposition. Concretely, we consider N relativistic quantum particles in a weak gravitational field and introduce a timeless formulation in which the global state of the N particles appears "frozen", but the dynamical evolution is recovered in terms of relational quantities. The position and momentum Hilbert space of the particles is used to fix the QRF via a transformation to the local frame of the particle such that the metric is locally inertial at the origin of the QRF. The internal Hilbert space corresponds to the clock space, keeping the proper time in the local frame of the particle. This fully relational construction shows how the remaining particles evolve from the perspective of the QRF and includes the Page-Wootters mechanism for non interacting clocks when the external degrees of freedom are neglected. Finally, we observe a quantum superposition of gravitational redshifts and a quantum superposition of special-relativistic time dilations in the QRF.
description: 12 pages + 11 pages Appendices, 2 figures. Version accepted in Quantum
How T-cells use large deviations to recognize foreign antigens
Creators: name: Zint, Natali
name: Baake, Ellen
name: Hollander, Frank den
Publisher: name: arXiv
Year: 2006
Subjects: subject: Subcellular Processes (q-bio.SC)
subject: Probability (math.PR)
subject: Molecular Networks (q-bio.MN)
subject: FOS: Biological sciences
subject: FOS: Mathematics

description: A stochastic model for the activation of T-cells is analysed. T-cells are part of the immune system and recognize foreign antigens against a background of the body's own molecules. The model under consideration is a slight generalization of a model introduced by Van den Berg, Rand and Burroughs in 2001, and is capable of explaining how this recognition works on the basis of rare stochastic events. With the help of a refined large deviation theorem and numerical evaluation it is shown that, for a wide range of parameters, T-cells can distinguish reliably between foreign antigens and self-antigens.
description: 16 pages, 6 figures; minor revision, new simulations; J Math Biol., in press
Erste Ergebnisse der Feldforschung an der spätbronzezeitlichen befestigten Siedlung Corneşti-Iarcuri im Sommer 2015
Creators: name: Balarie, Andrei
name: Heeb, Bernhard S.
name: Szentmiklosi, Alexandru
name: Teinz, Katharina
name: Krause, Rüdiger
name: Wemhoff, Matthias
name: Harding, Anthony
Publisher: name: Acta Praehistorica et Archaeologica
Year: 2022

description: Acta Praehistorica et Archaeologica, Bd. 48 (2016)
On the synthesis of neutron-rich isotopes along the N = 126 shell in multinucleon transfer reactions
Creators: name: Beliuskina, O.
name: Heinz, S.
name: Zagrebaev, V.
name: Comas, V.
name: Heinz, C.
name: Hofmann, S.
name: Knöbel, R.
name: Stahl, M.
name: Ackermann, D.
name: Hessberger, F.
name: Kindler, B.
name: Lommel, B.
name: Maurer, J.
name: Mann, R.
Publisher: name: GSI Helmholtzzentrum fuer Schwerionenforschung, Darmstadt
Year: 2015
Subjects: Physics

description: GSI Scientific Report 2014 - GSI Report 2015-1
An Efficient Analyses of the Behavior of One Dimensional Chaotic Maps using 0-1 Test and Three State Test
Creators: name: Muthu, Joan S.
name: Paul, Aditya Jyoti
name: Murali, P.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Numerical Analysis (math.NA)
subject: Cryptography and Security (cs.CR)
subject: Signal Processing (eess.SP)
subject: Dynamical Systems (math.DS)
subject: Functional Analysis (math.FA)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Physical sciences
subject: G.1.0; G.1.2; G.1.3; G.2.3; G.4; C.3; E.3; I.6.4
subject: 37H20, 34F10, 34H10, 49J15, 49K15, 47J15

description: In this paper, a rigorous analysis of the behavior of the standard logistic map, Logistic Tent system (LTS), Logistic-Sine system (LSS) and Tent-Sine system (TSS) is performed using 0-1 test and three state test (3ST). In this work, it has been proved that the strength of the chaotic behavior is not uniform. Through extensive experiment and analysis, the strong and weak chaotic regions of LTS, LSS and TSS have been identified. This would enable researchers using these maps, to have better choices of control parameters as key values, for stronger encryption. In addition, this paper serves as a precursor to stronger testing practices in cryptosystem research, as Lyapunov exponent alone has been shown to fail as a true representation of the chaotic nature of a map.
description: 6 pages, Published in IEEE RAICS 2020, see https://www.raics.in
Necessary and sufficient conditions for big bangs, bounces, crunches, rips, sudden singularities, and extremality events
Creators: name: Cattoen, Celine
name: Visser, Matt
Publisher: name: arXiv
Year: 2005
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The physically relevant singularities occurring in FRW cosmologies had traditionally been thought to be limited to the "big bang", and possibly a "big crunch". However, over the last few years, the zoo of cosmological singularities considered in the literature has become considerably more extensive, with "big rips" and "sudden singularities" added to the mix, as well as renewed interest in non-singular cosmological events such as "bounces" and "turnarounds". In this article we present a complete catalogue of such cosmological milestones, both at the kinematical and dynamical level. First, using generalized power series, purely kinematical definitions of these cosmological events are provided in terms of the behaviour of the scale factor a(t). The notion of a "scale-factor singularity'" is defined, and its relation to curvature singularities (polynomial and differential) is explored. Second, dynamical information is extracted by using the Friedmann equations (without assuming even the existence of any equation of state) to place constraints on whether or not the classical energy conditions are satisfied at the cosmological milestones. We use these considerations to derive necessary and sufficient conditions for the existence of cosmological milestones such as bangs, bounces, crunches, rips, sudden singularities, and extremality events. Since the classification is extremely general, the corresponding results are to a high degree model-independent: In particular, we provide a complete characterization of the class of bangs, crunches, and sudden singularities for which the dominant energy condition is satisfied.
description: 20 pages, uses iopart.cls; several references added
Reference frames and rigid motions in relativity: Applications
Creators: name: Soler, D.
Publisher: name: arXiv
Year: 2005
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The concept of rigid reference frame and of constricted spatial metric, given in the previous work [\emph{Class. Quantum Grav.} {\bf 21}, 3067,(2004)] are here applied to some specific space-times: In particular, the rigid rotating disc with constant angular velocity in Minkowski space-time is analyzed, a new approach to the Ehrenfest paradox is given as well as a new explanation of the Sagnac effect. Finally the anisotropy of the speed of light and its measurable consequences in a reference frame co-moving with the Earth are discussed.
description: 13 pages, 1 figure
MoDSS - a compact Mobile Decay Spectroscopy Set-up for the investigation of heavy and superheavy nuclei after separation
Creators: name: Ackermann, D.
name: Hessberger, F.
name: Hoffmann, J.
name: Kurz, N.
name: Maurer, J.
name: Mistry, A. K.
name: Piot, J.
name: Vostinar, M.
name: Wieczorek, P.
Publisher: name: GSI Helmholtzzentrum fuer Schwerionenforschung, Darmstadt
Year: 2015
Subjects: Physics

description: GSI Scientific Report 2014 - GSI Report 2015-1