cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
New Directions for Axion Searches via Scattering at Reactor Neutrino Experiments
Creators: name: Dent, James B.
name: Dutta, Bhaskar
name: Kim, Doojin
name: Liao, Shu
name: Mahapatra, Rupak
name: Sinha, Kuver
name: Thompson, Adrian
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Searches for pseudoscalar axion-like-particles (ALPs) typically rely on their decay in beam dumps or their conversion into photons in haloscopes and helioscopes. We point out a new experimental direction for ALP probes through their production via the Primakoff process or Compton-like scattering off of electrons or nuclei. We consider ALPs produced by the intense gamma ray flux available from megawatt-scale nuclear reactors at neutrino experiments through Primakoff-like or Compton-like channels. Low-threshold detectors in close proximity to the core will have visibility to ALP decays and inverse Primakoff and Compton scattering, providing sensitivity to the ALP-photon and ALP-electron couplings. We find that the sensitivity to these couplings at the ongoing MINER neutrino experiment exceeds existing limits set by laboratory experiments and, for the ALP-electron coupling, we forecast the world's best laboratory-based constraints over a large portion of the sub-MeV ALP mass range.
description: 6 pages, 3 figures, Accepted for publication in Physical Review Letters. Figures have been updated since version 1
Molecular vibration in cold collision theory
Creators: name: Volpi, Alessandro
name: Bohn, John L.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Cold collisions of ground state oxygen molecules with Helium have been investigated in a wide range of cold collision energies (from 1 $μ$K up to 10 K) treating the oxygen molecule first as a rigid rotor and then introducing the vibrational degree of freedom. The comparison between the two models shows that at low energies the rigid rotor approximation is very accurate and able to describe all the dynamical features of the system. The comparison between the two models has also been extended to cases where the interaction potential He - O$_2$ is made artificially stronger. In this case vibration can perturb rate constants, but fine-tuning the rigid rotor potential can alleviate the discrepancies between the two models.
description: 11 pages, 3 figures
Edge wetting of an Ising three-dimensional system
Creators: name: Bahmad, L.
name: Benyoussef, A.
name: Ez-Zahraouy, H.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: The effect of edge on wetting and layering transitions of a three-dimensional spin-1/2 Ising model is investigated, in the presence of longitudinal and surface magnetic fields, using mean field (MF) theory and Monte Carlo (MC) simulations. For T=0, the ground state phase diagram shows that there exist only three allowed transitions, namely: surface and bulk transition, surface transition and bulk transition. However, there exist a surface intra-layering temperature $T_{L}^{s}$, above which the surface and the intra-layering surface transitions occur. While the bulk layering and intra-layering transitions appear above an other finite temperature $T_{L}^{b} (\ge T_{L}^{s})$. These surface and bulk intra-layering transitions are not seen in the perfect surfaces case. Numerical values of $T_{L}^{s}$ and $T_{L}^{b}$, computed by Monte Carlo method are found to be smaller than those obtained using mean field theory. However, the results predicted by the two methods become similar, and are exactly those given by the ground state phase diagram, for very low temperatures. On the other hand, the behavior of the local magnetizations as a function of the external magnetic field, shows that the transitions are of the first order type. $T_{L}^{s}$ and $T_{L}^{b}$ decrease when increasing the system size and/or the surface magnetic field. In particular, $T_{L}^{b}$ reaches the wetting temperature $T_{w}$ for sufficiently large system sizes.
description: 11 Pages latex, 12 Figures PS
Classical Initial Conditions for Nucleus-Nucleus Collisions
Creators: name: Kovchegov, Yuri V.
Publisher: name: arXiv
Year: 2001
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We present the results of an analytical calculation of the distribution of gluons in the state immediately following a heavy ion collision in the quasi-classical limit of QCD given by McLerran-Venugopalan model. We show that the typical transverse energy Et of the produced gluons is of the order of the saturation scale of the nuclei Qs, as predicted by Mueller. We demonstrate that due to multiple rescatterings the obtained gluon distribution remains finite (up to logarithms of k) in the soft transverse momentum limit of k << Q_s. We compare the gluon spectrum in the single nuclear wave function before the collision to the spectrum of the produced gluons. The total number of produced gluons turns out to be proportional to the total number of gluons inside the nuclear wave function before the collision with the proportionality coefficient c = 2 ln 2.
description: 4 pages, 3 figures, to appear in the Proceedings of 15th International Conference on Ultrarelativistic Nucleus-Nucleus Collisions (QM2001), Stony Brook, New York, 15-20 Jan 2001
MOESM5 of Analysis of official deceased organ donation data casts doubt on the credibility of Chinaâ€™s organ transplant reform
Creators: name: Robertson, Matthew
name: Hinde, Raymond
name: Lavee, Jacob
Publisher: name: figshare
Year: 2019
Subjects: subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Developmental Biology
subject: Inorganic Chemistry
subject: FOS: Chemical sciences

description: Additional file 5. Results and Discussion of analysis of Red Cross and hospital-level data in five provinces.
Astrophysical Polarimetry of Cosmological Sources
Creators: name: Antonucci, Robert
Publisher: name: arXiv
Year: 2001
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Kostelecky and Mewes have recently shown that sensitive constraints can be placed on some aspects of Lorentz symmetry violation using certain astronomical data on high-redshift sources. Here, I introduce that data in its astronomical context, making it clear that these data are robust and accurate for their purpose. In particular, I explain that spatially extended scattered light from obscured quasars leads to a centrosymmetric scattering polarization, with polarization position angle independent of wavelength. Evidentally, these relationships aren't spoiled by propagation effects as the photons cross the universe.
description: 7 pages, 4 figures, Second Meeting on CPT and Lorentz Symmetry, Bloomington, IN (Aug. 2001)
Kaluza-Klein bundles and manifolds of exceptional holonomy
Creators: name: Kaste, Peter
name: Minasian, Ruben
name: Petrini, Michela
name: Tomasiello, Alessandro
Publisher: name: arXiv
Year: 2002
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We show how in the presence of RR two-form field strength the conditions for preserving supersymmetry on six- and seven-dimensional manifolds lead to certain generalizations of monopole equations. For six dimensions the string frame metric is Kaehler with the complex structure that descends from the octonions if in addition we assume F^{(1,1)}=0. The susy generator is a gauge covariantly constant spinor. For seven dimensions the string frame metric is conformal to a G_2 metric if in addition we assume the field strength to obey a selfduality constraint. Solutions to these equations lift to geometries of G_2 and Spin(7) holonomy respectively.
description: LaTeX, 13 pages
Analysis of the C$_2$ (d$^3Π_g$-a$^3Π_u$) Swan bands as a thermometric probe in CO$_2$ microwave plasmas
Creators: name: Carbone, Emile
name: D'Isa, Federico
name: Hecimovic, Ante
name: Fantz, Ursel
Publisher: name: arXiv
Year: 2019
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: The optical emission spectra of high pressure CO$_2$ microwave plasmas are usually dominated by the C$_2$ Swan bands. In this paper, the use of the C$_2$ Swan bands for estimating the gas temperature in CO$_2$ microwave plasmas is assessed. State by state fitting is employed to check the correctness of assuming a Boltzmann distribution for the rotational and vibrational distribution functions and, within statistical and systematic uncertainties, the C$_2$ Swan band can be fitted accurately with a single temperature for rotational and vibrational levels. The processes leading to the production of the C$_2$ molecule and particularly its d$^3Π_g$ state are briefly reviewed as well as collisional relaxation times of the latter. It is concluded that its rotational temperature can be associated to the gas temperature of the CO$_2$ microwave plasma and the results are moreover cross-checked by adding a small amount of N$_2$ in the discharge and measuring the CN violet band system. The 2.45~GHz plasma source is analyzed in the pressure range 180-925~mbar, for input microwave powers ranging from 0.9 - 3 kW and with gas flow rates of 5-100~L/min. An intense C$_2$ Swan bands emission spectrum can be measured only when the plasma is operated in contracted regime. A unique temperature of about 6000 $\pm$ 500 K is obtained for all investigated conditions. A spectroscopic database is constructed using the recent compilation and calculations by Brooke et al. \cite{BROOKE201311} of the line strengths and molecular constants for the C$_2$ (d$^3Π_g$-a$^3Π_u$) Swan bands system and made available as Supplementary Material in a format compatible with the open source MassiveOES software.
Delay-induced Synchronization Phenomena in an Array of Globally Coupled Logistic Maps
Creators: name: Martí, A. C.
name: Masoller, C.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: FOS: Physical sciences

description: We study the synchronization of a linear array of globally coupled identical logistic maps. We consider a time-delayed coupling that takes into account the finite velocity of propagation of the interactions. We find globally synchronized states in which the elements of the array evolve along a periodic orbit of the uncoupled map, while the spatial correlation along the array is such that an individual map sees all other maps in his present, current, state. For values of the nonlinear parameter such that the uncoupled maps are chaotic, time-delayed mutual coupling suppress the chaotic behavior by stabilizing a periodic orbit which is unstable for the uncoupled maps. The stability analysis of the synchronized state allows us to calculate the range of the coupling strength in which global synchronization can be obtained.
description: 8 pages, 7 figures, changed content, added references
$P_1$--nonconforming polyhedral finite elements in high dimensions
Creators: name: Sheen, Dongwoo
Publisher: name: arXiv
Year: 2019
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: 65N30, 65Zxx, 91G60, 83-08, 83Fxx

description: We consider the lowest--degree nonconforming finite element methods for the approximation of elliptic problems in high dimensions. The $P_1$--nonconforming polyhedral finite element is introduced for any high dimension. Our finite element is simple and cheap as it is based on the triangulation of domains into parallelotes, which are combinatorially equivalent to $d$--dimensional cube, rather than the triangulation of domains into simplices. Our nonconforming element is nonparametric, and on each polytope it contains only linear polynomials, but it is sufficient to give optimal order convergence for second--order elliptic problems.
Dreidimensionale Bewegungserfassung mit Consumer-Highspeedkameras: Eine Systementwicklung unter besonderer Berücksichtigung der Messunsicherheit
Creators: name: Kredel, Ralf
Publisher: name: Universität Bern
Year: 2013
Subjects: 610 Medicine & health
620 Engineering
790 Sports, games & entertainment

description: Schwerpunkt dieser Arbeit ist die Entwicklung und der Test eines auf Consumer-Highspeedkameras basierenden Bewegungserfassungssystems. Consumer-Kameras sind flexibler einsetzbar als kommerzielle Bewegungserfassungssysteme, zugleich kostengünstiger und werden daher oft in der sportwissenschaftlichen Forschung verwendet. Durch ihren Einsatz entstehen jedoch prinzipbedingt höhere Messunsicherheiten, deren Bestimmung in der vorliegenden Arbeit ein besonderer Stellenwert eingeräumt wird. Nach einem Überblick über aktuelle Bewegungserfassungssysteme und deren Genauigkeiten folgt eine Betrachtung der Messunsicherheit aus metrologischer Perspektive. Anschließend werden die Prozesse der Bilderfassung bei digitalen Consumer-Kameras sowie die zur Modellierung des Kameraabbildungsverhaltens notwendigen Parameteridentifikationsmethoden dargestellt. Diese reichen vom häufig genutzten DLT-Verfahren über Methoden mit Verzeichnungskorrektur bis zu Bündelausgleichsverfahren. Im Anschluss werden die für die verwendeten Kameras geeigneten Methoden auf Basis funktionaler Hardwaretests ausgewählt und weitere für das Bewegungserfassungssystem notwendige Softwarekomponenten diskutiert. Dazu gehören neben der automatisierten Video- und Bildverarbeitung, spezielle Verfahren zur Korrektur von Consumer-Kamera-spezifischen Abweichungen, z.B. die Korrektur von Rolling-Shutter-Verzerrungen. Im zweiten Teil der Arbeit richtet sich der Fokus auf die Simulation der Effekte von Parameterungenauigkeiten auf die Systemgenauigkeit sowie auf die Validierung und den Test des implementierten Systems. Dabei konnte die Rekonstruktionsgenauigkeit von 11.86mm bei einer Referenzrahmenkalibration durch den Einsatz der Kalibrationsmethode mit Bündelausgleichsverfahren von Svoboda u. a. (2005) auf maximal 4.126mm (M=0.073 mm; SD=1.486 mm) reduziert werden. Diese Methode erlaubt zudem eine einfachere Kalibration größerer Messvolumen ohne aufwändige Referenzrahmen und ist daher ideal für den sportwissenschaftlichen Einsatz geeignet. Ein weiteres Ergebnis der Arbeit ist die theoretische Ableitung der Fehlerfortpflanzung für die Prozessschritte der Bewegungserfassung. In Kombination mit der entwickelten Simulationsumgebung wird damit die Grundlage für eine Prädiktion der erreichbaren Messunsicherheit bereits vor der eigentlichen Messung gelegt.
MeV-scale reheating temperature and thermalization of oscillating neutrinos by radiative and hadronic decays of massive particles
Creators: name: Hasegawa, Takuya
name: Hiroshima, Nagisa
name: Kohri, Kazunori
name: Hansen, Rasmus S. L.
name: Tram, Thomas
name: Hannestad, Steen
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: From a theoretical point of view, there is a strong motivation to consider an MeV-scale reheating temperature induced by long-lived massive particles with masses around the weak scale, decaying only through gravitational interaction. In this study, we investigate lower limits on the reheating temperature imposed by big-bang nucleosynthesis assuming both radiative and hadronic decays of such massive particles. For the first time, effects of neutrino self-interactions and oscillations are taken into account in the neutrino thermalization calculations. By requiring consistency between theoretical and observational values of light element abundances, we find that the reheating temperature should conservatively be $T_{\rm RH} \gtrsim 1.8$ MeV in the case of the 100% radiative decay, and $T_{\rm RH} \gtrsim$ 4-5 MeV in the case of the 100% hadronic decays for particle masses in the range of 10 GeV to 100 TeV.
description: 37 pages, 13 figures, to appear in JCAP
Konventionelle Laparoskopie versus Handheld Roboter: eine Pelvitrainer Studie zum objektiven und subjektiven Vergleich des Terumo© Kymerax© Precision-Drive Articulating Surgical System mit konventionellen laparoskopischen Instrumenten
Creators: name: Sieber, Marco Alain
Publisher: name: Universität Bern
Year: 2015
Subjects: 610 Medicine & health

description: EINLEITUNG Anhand eines Pelvitrainer Modells wurde ein sogenannter „Handheld Roboter“ (Kymerax© Precision- Drive Articulating Surgical System von Terumo©) mit konventionellen laparoskopischen Instrumenten verglichen. Das Kymerax© System verfügt über eine Instrumentenspitze, welche durch Knöpfe am Handgriff zusätzlich abgewinkelt und rotiert werden kann. METHODE 45 Probanden wurden in 2 Erfahrungsgruppen aufgeteilt: 20 ExpertInnen (mehr als 50 selbstständig durchgeführte laparoskopische Operationen pro Jahr) und 25 StudentInnen (keine Erfahrung in der Laparoskopie). Sie führten 6 standardisierte Übungen durch, wobei die ersten beiden Übungen jeweils nur der Instrumenteninstruktion dienten und nicht ausgewertet wurden. In den restlichen 4 Übungen wurden Zeit, Fehleranzahl und Präzision erfasst. Es wurde in 2 Gruppen randomisiert. Eine Gruppe führte die Übungen zuerst mit dem konventionellen System und dann mit dem Kymerax© System durch. Bei der anderen Gruppe erfolgten die Übungen in umgekehrter Reihenfolge. Am Ende beantworteten die Teilnehmer Fragen zu den Übungen und den Operationssystemen. Die Daten wurden mittels Varianzanalyse ausgewertet. RESULTATE In allen 4 gemessenen Übungen brauchten die Probanden mit Kymerax© signifikant mehr Zeit (20%-40%). Vorteile des Kymerax© Systems waren eine bessere Nadelkontrolle bei einer auf den Operateur gerichteten Stichrichtung, eine geringere Abweichung beim Schneiden einer graden Linie, sowie ein geringeres Ausfransen der Schnittlinie beim graden wie beim runden Schneiden. Im Gegensatz zu den Experten kamen Studenten, welche das Kymerax© System in der zweiten Runde verwendeten, besser mit diesem zu Recht, als Ihre Studentenkollegen, die das Kymerax© System in der ersten Runde verwendeten. In der Befragung gaben über 90% der Teilnehmer an, dass das Kymerax© System bei der Durchführung der Übungen einen Vorteil bringt. Die Probanden empfanden jedoch die Bedienung als gewöhnungsbedürftig und erschöpften mit dem Kymerax© System schneller. Bemängelt wurde beim Kymerax© System die nicht freie Rotation, die eingeschränkte Abwinklung, die Sichteinschränkung durch den 7mm Schaft sowie die Ergonomie des Handgriffs. DISKUSSION Das Kymerax© System bringt Vorteile bei gewissen komplexen laparoskopischen Aufgaben. Der Preis hierfür ist die langsamere Durchführung der Aufgaben, die längere Angewöhnungszeit an das Instrument sowie die schnellere Ermüdung des Benutzers. Das System zeigt ein grosses Potential für die laparoskopische Chirurgie, jedoch sind weitere Verbesserungen notwendig. Von der Firma Terumo© wurde zwischenzeitlich das Operationssystem vom Markt genommen.
The Pure State Space of Quantum Mechanics as Hermitian Symmetric Space
Creators: name: Cirelli, R.
name: Gatti, M.
name: Maniá, A.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The pure state space of Quantum Mechanics is investigated as Hermitian Symmetric Kaehler manifold. The classical principles of Quantum Mechanics (Quantum Superposition Principle, Heisenberg Uncertainty Principle, Quantum Probability Principle) and Spectral Theory of observables are discussed in this non linear geometrical context.
description: 18 pages, no figures
Spin relaxation and antisymmetric exchange in n-doped III-V semiconductor
Creators: name: Gor'kov, L. P.
name: Krotkov, P. L.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: Recently K. Kavokin [Phys. Rev. B 64, 075305 (2001)] suggested that the Dzyaloshinskii-Moriya interaction between localized electrons governs slow spin relaxation in $n$-doped GaAs in the regime close to the metal-insulator transition. We derive the correct spin Hamiltonian and apply it to the determination of spin dephasing time using the method of moments expansion. We argue that the proposed mechanism is insufficient to explain the observed values of the spin relaxation time.
description: 5 pages, 1 figures
Relativistic direct Urca processes in cooling neutron stars
Creators: name: Leinson, L. B.
name: Perez, A.
Publisher: name: arXiv
Year: 2001
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Astrophysics (astro-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We derive a relativistic expression for neutrino energy losses caused by the direct Urca processes in degenerate baryon matter of neutron stars. We use two different ways to calculate the emissivity caused by the reactions to our interest. First we perform a standard calculation by Fermi's ''golden'' rule. The second calculation, resulting in the same expression, is performed with the aid of polarization functions of the medium. Our result for neutrino energy losses strongly differs from previous non-relativistic results. We also discuss nonconservation of the baryon vector current in reactions through weak charged currents in the medium, when the asymmetry between protons and neutrons is considered. The above effects, not discussed in the literature before, substantially modify the polarization functions responsible for the induced weak charged currents in baryon matter.
description: 18 pages, 1 figure
Order by singularity in Kitaev clusters
Creators: name: Srinivasan, Sarvesh
name: Khatua, Subhankar
name: Baskaran, G.
name: Ganesh, R.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The Kitaev model is a beautiful example of frustrated interactions giving rise to deep and unexpected phenomena. In particular, its classical version has remarkable properties stemming from exponentially large ground state degeneracy. Here, we present a study of magnetic clusters with spin-$S$ moments coupled by Kitaev interactions. We focus on two cluster geometries -- the Kitaev square and the Kitaev tetrahedron -- that allow us to explicitly enumerate all classical ground states. In both cases, the classical ground state space (CGSS) is large and self-intersecting, with non-manifold character. The Kitaev square has a CGSS of four intersecting circles that can be embedded in four dimensions. The tetrahedron CGSS consists of eight spheres embedded in six dimensions. In the semi-classical large-$S$ limit, we argue for effective low energy descriptions in terms of a single particle moving on these non-manifold spaces. Remarkably, at low energies, the particle is tied down in bound states formed around singularities at self-intersection points. In the language of spins, the low energy physics is determined by a distinct set of states that lies well below other eigenstates. These correspond to `Cartesian' states, a special class of classical ground states that are constructed from dimer covers of the underlying lattice. They completely determine the low energy physics despite being a small subset of the classical ground state space. This provides an example of order by singularity, where state selection becomes stronger upon approaching the classical limit.
description: 19 pages, 18 figures
Grazing incidence x-ray diffraction studies of lipid-peptide mixed monolayers during shear flow
Creators: name: Bera, Pradip Kumar
name: Kandar, Ajoy Kumar
name: Krishnaswamy, Rema
name: Fontaine, Philippe
name: Imperor-Clerc, Marianne
name: Pansu, Brigitte
name: Constantin, Doru
name: Maiti, Santanu
name: Sanyal, Milan K.
name: Sood, A. K.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Grazing Incidence X-ray Diffraction (GIXD) studies of monolayers of biomolecules at the air-water interface give quantitative information of in-plane packing, coherence lengths of the ordered diffracting crystalline domains and the orientation of hydrocarbon chains. Rheo-GIXD measurements revel quantitative changes in the monolayer under shear. Here we report GIXD studies of monolayers of Alamethicin peptide, DPPC lipid and their mixtures at the air-water interface under the application of steady shear stresses. The Alamethicin monolayer and the mixed monolayer show flow jamming transition. On the other hand, pure DPPC monolayer under the constant stress flows steadily with a notable enhancement of area/molecule, coherence length, and the tilt angle with increasing stress, suggesting fusion of nanocrystallites during flow. The DPPC-Alamethicin mixed monolayer shows no significant change in the area/DPPC molecule or in the DPPC chain tilt but the coherence length of both phases (DPPC and Alamethicin) increases suggesting that the crystallites of individual phases are merging to bigger size promoting more separation of phases in the system during flow. Our results show that Rheo-GIXD has the potential to explore in-situ molecular structural changes under rheological conditions for a diverse range of confined biomolecules at the interfaces.
description: 21 pages, 11 figures, 2 tables
An Inverse Penrose Limit and Supersymmetry Enhancement in the Presence of Tensor Central Charges
Creators: name: Zheltukhin, A. A.
name: Uvarov, D. V.
Publisher: name: arXiv
Year: 2002
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: A connection between weak and strong tension limits and their perturbative corrections is discussed. New twistor-like models based on D=4, N=1 tensionless superstring and superbrane with tensor central charges are studied. The presence of three, two or less preserved fractions of $κ-$symmetry in the actions free of the Wess-Zumino terms is shown. A correlation of extra $κ-$symmetry with the R-symmetry is established. The equations of the superstring and superbrane models preserving 3/4 supersymmetry are exactly solved. The general solution for the Goldstone fermion is pure static, but for the Goldstone bosons it also includes a term describing string/brane motions along the fixed directions given by the initial data. These solutions correspond to the partial spontaneous breaking of the D=4, N=1 global supersymmetry and can be associated with a static closed magnetic Nielsen-Olesen vortex or a p-dimensional vortex.
description: Latex, 23 pages, no figures
Fast Monte Carlo simulations and singularities in the probability distributions of non-equilibrium systems
Creators: name: Bandrivskyy, A.
name: Beri, S.
name: Luchinsky, D. G.
name: Mannella, R.
name: McClintock, P. V. E.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: A numerical technique is introduced that reduces exponentially the time required for Monte Carlo simulations of non-equilibrium systems. Results for the quasi-stationary probability distribution in two model systems are compared with the asymptotically exact theory in the limit of extremely small noise intensity. Singularities of the non-equilibrium distributions are revealed by the simulations.
description: 4 pages, 4 figures
Beware of the mad hatter. Mental illness stigma and healthcare utilisation for mental problems
Creators: name: Schnyder, Nina
Publisher: name: Universität Bern
Year: 2017
Subjects: 610 Medicine & health

description: Mental disorders cause high individual and societal costs and burden. Although they are treatable and potentially preventable, healthcare utilisation is often delayed or completely absent. Important barriers of healthcare utilisation are mental illness related stigmatising attitudes. Stigma is not a unitary concept but covers several aspects whose single contributions to delay or absence of healthcare utilisation are so far unclear. The first aim of this PhD thesis was to examine associations between different aspects of stigma and healthcare utilisation in a meta-analysis, providing more robust and aggregated evidence to the growing body of literature in this field. Stigmatising attitudes are not independent of each other and are influence by other factors, an important one being knowledge about signs and treatment of mental disorders, i.e. mental health literacy (MHL). In particular persons’ causal or etiological explanations for a mental illness were associated with stigmatising attitudes before. The second aim of this PhD thesis was to examine associations between persons’ causal explanations for mental disorders and stigma, and between stigma and healthcare utilisation in the general population. Using structural equation modelling and a comprehensive set of variables in order to elucidate complex relations between the latent constructs, makes this work stand out from majority of previous research. The main findings of this PhD will be discussed in the light of earlier studies and social psychological research and theories. Furthermore, suggestions for future studies and for campaigns promoting healthcare utilisation via improving MHL and stigmatising attitudes will be derived.
Pancharatnam revisited
Creators: name: Sjöqvist, Erik
Publisher: name: arXiv
Year: 2002
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Some recent ideas concerning Pancharatnam's prescription of relative phase between quantal states are delineated. Generalisations to mixed states and entangled two-photon states are discussed. An experimental procedure to test the geometric phase as a Pancharatnam relative phase is described. We further put forward a spatial split-beam dual to Pancharatnam's relative phase.
description: To appear in "Quantum Theory: Reconsideration of Foundations", ed. by A. Khrennikov; series "Math. Modelling in Physics, Engineering and Cognitive Sciences'' V\"axj\"o Univ. Press (2002) - requires sprocl.sty
Permanent Directional Heat Currents in Lattices of Optomechanical Resonators
Creators: name: Denis, Zakari
name: Biella, Alberto
name: Favero, Ivan
name: Ciuti, Cristiano
Publisher: name: arXiv
Year: 2019
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study the phonon dynamics in lattices of optomechanical resonators where the mutually coupled photonic modes are coherently driven and the mechanical resonators are uncoupled and connected to independent thermal baths. We present a general procedure to obtain the effective Lindblad dynamics of the phononic modes for an arbitrary lattice geometry, where the light modes play the role of an effective reservoir that mediates the phonon nonequilibrium dynamics. We show how to stabilize stationary states exhibiting directional heat currents over arbitrary distance, despite the absence of thermal gradient and of direct coupling between the mechanical resonators.
description: Final version accepted in PRL
MOESM11 of An influential meal: host plant dependent transcriptional variation in the beet armyworm, Spodoptera exigua (Lepidoptera: Noctuidae)
Creators: name: Breeschoten, Thijmen
name: Ros, Vera
name: M. Schranz
name: Simon, Sabrina
Publisher: name: figshare
Year: 2019
Subjects: subject: Molecular Biology
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: FOS: Biological sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Inorganic Chemistry
subject: FOS: Chemical sciences
subject: Plant Biology
subject: Computational Biology

description: Additional file 11: Figure S1. Venn diagram indicating the number of expressed transcripts shared or unique in Spodoptera exigua larvae feeding on different diet treatments based on the filtered and normalized count matrix. Larvae developed on Zea mays, Brassica oleracea, Nicotiana tabacum or artificial diet until reaching the third larval stage. The total number of transcripts included was 58,749.
Cinemeducation: Entwicklung eines E-Learnings zur Anamneseerhebung
Creators: name: Bürki, Fabian Max
Publisher: name: Universität Bern
Year: 2017
Subjects: 610 Medicine & health
360 Social problems & social services

description: Für die Medizinstudierenden des ersten Jahreskurses wurde ein ILIAS-Lernmodul entwickelt, welches sich mit der Einführung in die Anamneseerhebung befasst. Hierbei wurde mit Mitteln der Cinemeducation, also der Verwendung von Filmen und Serien mit medizinischen Inhalten, gearbeitet. Das Lernmodul beinhaltet Videoclips, welche durch Theorieabschnitte ergänzt werden. Die vermittelten Inhalte werden regelmässig mit Multiple Choice Fragen abgefragt. Es entstand ein E-Learning, welches die Studierenden auf eine neue Weise an die Grundlagen des medizinischen Interviews heranführt. Das Lernmodul steht ab dem Herbstsemester 2017 den Medizinstudieren zur Verfügung und wird ab dem Frühjahrssemester 2018 testatpflichtig in das Curriculum integriert. Die weiterführende Betreuung des Lernmoduls übernimmt das Berner Institut für Hausarztmedizin BIHAM.
The parameter-free Finger-Of-God model and its application to 21cm intensity mapping
Creators: name: Zhang, Jiajun
name: Costa, André A.
name: Wang, Bin
name: He, Jianhua
name: Luo, Yu
name: Yang, Xiaohu
Publisher: name: arXiv
Year: 2019
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Using the galaxy catalog built from ELUCID N-body simulation and the semi-analytical galaxy formation model, we have built a mock HI intensity mapping map. We have implemented the Finger-of-God (FoG) effect in the map by considering the galaxy HI gas velocity dispersion. By comparing the HI power spectrum in the redshift space with the measurement from IllustrisTNG simulation, we have found that such FoG effect can explain the discrepancy between current mock map built from N-body simulation and Illustris TNG simulation. Then we built a parameter-free FoG model and a shot-noise model to calculate the HI power spectrum. We found that our model can accurately fit both the monopole and quadrupole moments of the HI matter power spectrum. Our method of building the mock HI intensity map and the parameter-free FoG model will be widely useful for the up-coming 21cm intensity mapping experiments, such as CHIME, Tianlai, BINGO, FAST and SKA. It is also crucial for us to study the non-linear effects in 21cm intensity mapping.
description: 10 pages, 5 figures, 1 table, published on ApJ, updated to match the published version
title: Technology transfer in practice: implications for Pandemic Agreement negotiations: interviews with Ellen 't Hoen, Ravi Ganapathy, Ike James and Martin Friede
Creators: name: Moon, Suerie
Publisher: name: Graduate Institute of International and Development Studies
publisherIdentifier: https://ror.org/007ygn379
publisherIdentifierScheme: ROR
Year: 2025

description: Global Health Centre Discussion Paper
The thermodynamic spin magnetization of strongly correlated 2d electrons in a silicon inversion layer
Creators: name: Prus, O.
name: Yaish, Y.
name: Reznikov, M.
name: Sivan, U.
name: Pudalov, V.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: A novel method invented to measure the minute thermodynamic spin magnetization of dilute two dimensional fermions is applied to electrons in a silicon inversion layer. Interplay between the ferromagnetic interaction and disorder enhances the low temperature susceptibility up to 7.5 folds compared with the Pauli susceptibility of non-interacting electrons. The magnetization peaks in the vicinity of the density where transition to strong localization takes place. At the same density, the susceptibility becomes extremely close to that of free spins (Curie susceptibility), indicating an almost perfect compensation of the kinetic energy toll associated with spin polarization by the energy gained from the ferromagnetic correlation. Yet, the balance favors a paramagnetic phase over spontaneous magnetization.
description: Minor changes. One reference is added and typos fixed. As appeared in PRB
Additional file 10 of Are dopamine agonists still the first-choice treatment for prolactinoma in the era of endoscopy? A systematic review and meta-analysis
Creators: name: Cai, Xiangming
name: Zhu, Junhao
name: Yang, Jin
name: Tang, Chao
name: Cong, Zixiang
name: Ma, Chiyuan
Publisher: name: figshare
Year: 2022
Subjects: subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Pharmacology
subject: Biotechnology
subject: Chemical Sciences not elsewhere classified
subject: Marine Biology
subject: Cancer
subject: Science Policy

description: Additional file 10: Supplementary Table 2. Basic characteristics of the included studies with DAs treatment.
The FLASHES Survey I: Integral Field Spectroscopy of the CGM around 48 $z=2.3-3.1$ QSOs
Creators: name: O'Sullivan, Donal
name: Martin, Christopher
name: Matuszewski, Mateusz
name: Hoadley, Keri
name: Hamden, Erika
name: Neill, James D
name: Lin, Zeren
name: Parihar, Prachi
Publisher: name: arXiv
Year: 2019
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: We present the pilot study component of the Fluorescent Lyman-Alpha Structures in High-z Environments (FLASHES) Survey; the largest integral-field spectroscopy survey to date of the circumgalactic medium at $z=2.3-3.1$. We observed 48 quasar fields between 2015 and 2018 with the Palomar Cosmic Web Imager (Matuszewski et al. 2010). Extended HI Lyman-$\mathrmα$ emission is discovered around 42/48 of the observed quasars, ranging in projected, flux-weighted radius from 21-71 proper kiloparsecs (pkpc), with 26 nebulae exceeding $100\mathrm{~pkpc}$ in effective diameter. The circularly averaged surface brightness radial profile peaks at a maximum of $\mathrm{1\times 10^{-17}~erg~s^{-1}~cm^{-2}~arcsec^{-2}}$ ($2\times10^{-15}~\mathrm{erg~s^{-1}~cm^{-2}~arcsec^{-2}}$ adjusted for cosmological dimming) and luminosities range from $1.9\times10^{43}~\mathrm{erg~s^{-1}}$ to $-14.1\times10^{43}~\mathrm{erg~s^{-1}}$. The emission appears to have a highly eccentric morphology and a maximum covering factor of $50\%$ ($60\%$ for giant nebulae). On average, the nebular spectra are red-shifted with respect to both the systemic redshift and Ly$α$ peak of the quasar spectrum. The integrated spectra of the nebulae mostly have single or double-peaked line shapes with global dispersions ranging from $167~\mathrm{km~s^{-1}}$ to $690~\mathrm{km~s^{-1}}$, though the individual (Gaussian) components of lines with complex shapes mostly appear to have dispersions $\leq 400$ $\mathrm{km~s^{-1}}$, and the flux-weighted velocity centroids of the lines vary by thousands of $ \mathrm{km~s^{-1}}$ with respect to the systemic QSO redshifts. Finally, the root-mean-square velocities of the nebulae are found to be consistent with gravitational motions expected in dark matter halos of mass $\mathrm{M_h \simeq10^{12.5} M_\odot}$. We compare these results to existing surveys at both higher and lower redshift.
The complement of the open orbit for tame quivers
Creators: name: Michel, Andrea
Publisher: name: Universität Bern
Year: 2016
Subjects: 510 Mathematics

description: Let Q be a tame quiver and d a prehomogeneous dimension vector. We consider the complement of the open orbit of the representation space Rep (Q; d) and generalise the idea of A. Schofield to obtain for each irreducible component of codimension greater than one an ideal in the polynomial ring k [Rep (Q; d)] whose zero set is this component. Moreover, we compare our result with the one of K. Baur and L. Hille, who found for each irreducible component some defining rank conditions in case Q is the equioriented Dynkin quiver of type An.
Non-Commutative Gauge Theories and the Cosmological Constant
Creators: name: Armoni, Adi
name: Russo, Rodolfo
Publisher: name: arXiv
Year: 2001
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Astrophysics (astro-ph)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We discuss the issue of the cosmological constant in non-commutative non-supersymmetric gauge theories. In particular, in orbifold field theories non-commutativity acts as a UV cut-off. We suggest that in these theories quantum corrections give rise to a vacuum energy ρ, that is controlled by the non-commutativity parameter θ, ρ~ 1/theta^2 (only a soft logarithmic dependence on the Planck scale survives). We demonstrate our claim in a two-loop computation in field theory and by certain higher loop examples. Based on general expressions from string theory, we suggest that the vacuum energy is controlled by non-commutativity to all orders in perturbation theory.
description: 11 pages, RevTex. 4 eps figures. v2: Typos corrected. To appear in Phys.Rev.D
MOESM12 of An influential meal: host plant dependent transcriptional variation in the beet armyworm, Spodoptera exigua (Lepidoptera: Noctuidae)
Creators: name: Breeschoten, Thijmen
name: Ros, Vera
name: M. Schranz
name: Simon, Sabrina
Publisher: name: figshare
Year: 2019
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: Ecology
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: Inorganic Chemistry
subject: FOS: Chemical sciences
subject: Plant Biology

description: Additional file 12: Data S1. Additional results of transcriptome assembly statistics and annotation.
On the BRST Cohomology of Superstrings with/without Pure Spinors
Creators: name: Grassi, P. A.
name: Policastro, G.
name: van Nieuwenhuizen, P.
Publisher: name: arXiv
Year: 2002
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We replace our earlier condition that physical states of the superstring have non-negative grading by the requirement that they are analytic in a new real commuting constant t which we associate with the central charge of the underlying Kac-Moody superalgebra. The analogy with the twisted N=2 SYM theory suggests that our covariant superstring is a twisted version of another formulation with an equivariant cohomology. We prove that our vertex operators correspond in one-to-one fashion to the vertex operators in Berkovits' approach based on pure spinors. Also the zero-momentum cohomology is equal in both cases. Finally, we apply the methods of equivariant cohomology to the superstring, and obtain the same BRST charge as obtained earlier by relaxing the pure spinor constraints.
description: 25 pages, TeX
The projections on $ZZγ$ and $Zγγ$ couplings via $ν\bar νγ$ production in HL-LHC and HE-LHC
Creators: name: Senol, A.
name: Denizli, H.
name: Yilmaz, A.
name: Cakir, I. Turk
name: Cakir, O.
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We investigate the sensitivity of the anomalous dimension-8 neutral triple gauge couplings via process $pp\to ννγ$ with fast detector simulation including pile-up effects for the post LHC experiments. The transverse momentum of the final state photon and missing energy transverse distributions are considered in the analysis. We obtain the sensitivity to the $C_{\widetilde B W}/Λ^4$, $C_{B B}/Λ^4$, $C_{WW}/Λ^4$ and $C_{BW}/Λ^4$ couplings at HL-LHC and HE-LHC with an integrated luminosity of 3 ab$^{-1}$ and 15 ab$^{-1}$, respectively. Finally, our numerical results show that one can reach the constraints at 95\% confidence level without systematic error on $C_{\widetilde BW}/Λ^4$, $C_{B B}/Λ^4$, $C_{W W}/Λ^4$ and $C_{BW}/Λ^4$ couplings for HL-LHC (HE-LHC) as [-0.38;0.38] ([-0.12;0.12]), [-0.21;0.21]([-0.085;0.085]), [-1.08;1.08]([-0.38;0.38]) and [-0.48;0.48]([-0.25;0.25]), respectively. They are better than the experimental limits obtained by LHC.
description: 11 pages, 7 figures, final version to appear in Phys.Lett.B
Rhythms worth shedding : reconciling Jewish participation in tap dance through the 're-appropriation' of the Morton Gould Tap Dance Concerto
Creators: name: Arnold, Jeremy Caleb
name: 0000-0001-5898-5330
Publisher: name: The University of Texas at Austin
Year: 2020
Subjects: Tap dance
Jewish
Dance
Jewishness
Tap archive
Tap History
Jewish dance

description: As a uniquely American artform, tap dance reflects American culture. Throughout its history, from vaudeville to the movie musical and then to its presentation on concert dance stages, tap dance has gone through multiple cycles of appropriation. Jewish performers, producers, and directors were directly involved in many of these moments. As a white Jewish American professional dancer and dance scholar, I have studied tap dance’s appropriative history and examined the white supremacist structures that have dominated and continue to dominate the presentation and production of the form. Rhythms Worth Shedding is a research-driven tap dance performance that that re-imagines an appropriative moment of Jewish intervention in tap dance’s history. Through the process of creating this concert, I sought to confront and leverage my own privilege in service to culturally correcting a problematic yet seminal component of the tap dance archive - The Morton Gould Tap Dance Concerto. This thesis seeks to explore Jewish identity through tap dance performance and grapple with the responsibility of contemporary Jewish tap dancers given the historic role of Jewish appropriation in tap dance.
Controlled Polymer Synthesis Toward Green Chemistry: Deep Insights into Atom Transfer Radical Polymerization in Biobased Substitutes for Polar Aprotic Solvents
Creators: name: Zaborniak, Izabela
name: Klamut, Małgorzata
name: Warne, Cicely
name: Kisiel, Katarzyna
name: Niemiec, Martyna
name: Błoniarz, Paweł
name: Pellis, Alessandro
name: Matyjaszewski, Krzysztof
name: Chmielarz, Paweł
Publisher: name: Zenodo
Year: 2024

description: The data includes raw analysis data: gel permeation chromatography (GPC), nuclear magnetic resonance spectroscopy (NMR) to determine monomer conversion and confirm the structure of the final products, cyclic voltammetry analyses for an electrochemical characteristic of the reaction system in the presence of various solvents, and atomic absorption spectroscopy (AAS) results of polymer samples to determine copper content in final precipitated products.