cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The Galactic Population of Young Gamma-ray Pulsars
Creators: name: Watters, Kyle P.
name: Romani, Roger W.
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We have simulated a Galactic population of young pulsars and compared with the Fermi LAT sample, constraining the birth properties, beaming and evolution of these spin-powered objects. Using quantitative tests of agreement with the distributions of observed spin and pulse properties, we find that short birth periods P_0 ~ 50ms and gamma-ray beams arising in the outer magnetosphere, dominated by a single pole, are strongly preferred. The modeled relative numbers of radio-detected and radio-quiet objects agree well with the data. Although the sample is local, extrapolation to the full Galaxy implies a gamma-ray pulsar birthrate 1/(59 yr). This is shown to be in good agreement with the estimated Galactic core collapse rate and with the local density of OB star progenitors. We give predictions for the numbers of expected young pulsar detections if Fermi LAT observations continue 10 years. In contrast to the potentially significant contribution of unresolved millisecond pulsars, we find that young pulsars should contribute little to the Galactic gamma-ray background.
description: 14 pages, 11 figures; to appear in the Astrophysical Journal. Updated in response to referee comments
Ergodic Theory Over ${\F}_2[[T]]$
Creators: name: Lin, Dongdai
name: Shi, Tao
name: Yang, Zifeng
Publisher: name: arXiv
Year: 2011
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics

description: In cryptography and coding theory, it is important to study the pseudo-random sequences and the ergodic transformations. We already have the 1-Lipshitz ergodic theory over ${\Z}_2$ established by V. Anashin and others. In this paper we present an ergodic theory over ${\F}_2[[T]]$ and some ideas which might be very useful in applications.
description: 18 pages, some typos corrected, exposition improved
Letter from Will Winton Alexander to Gunnar Myrdal, May 1, 1940
Creators: name: Alexander, Will Winton, 1884-1956
Publisher: name: Columbia University
Year: 2019
Subjects: Race relations
African Americans--Social conditions
Endowments

description: Will Winton Alexander of the U.S. Department of Agriculture writes to bid farewell and express his admiration and affection for Gunnar Myrdal prior to Myrdal's departure for Sweden.
On the partial connection between random matrices and interacting particle systems
Creators: name: Ferrari, Patrik L.
name: Frings, René
Publisher: name: arXiv
Year: 2010
Subjects: subject: Mathematical Physics (math-ph)
subject: Probability (math.PR)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: 82C22, 60K35, 15A52

description: In the last decade there has been increasing interest in the fields of random matrices, interacting particle systems, stochastic growth models, and the connections between these areas. For instance, several objects appearing in the limit of large matrices arise also in the long time limit for interacting particles and growth models. Examples of these are the famous Tracy-Widom distribution functions and the Airy_2 process. The link is however sometimes fragile. For example, the connection between the eigenvalues in the Gaussian Orthogonal Ensembles (GOE) and growth on a flat substrate is restricted to one-point distribution, and the connection breaks down if we consider the joint distributions. In this paper we first discuss known relations between random matrices and the asymmetric exclusion process (and a 2+1 dimensional extension). Then, we show that the correlation functions of the eigenvalues of the matrix minors for beta=2 Dyson's Brownian motion have, when restricted to increasing times and decreasing matrix dimensions, the same correlation kernel as in the 2+1 dimensional interacting particle system under diffusion scaling limit. Finally, we analyze the analogous question for a diffusion on (complex) sample covariance matrices.
description: 31 pages, LaTeX; Added a section concerning the Markov property on space-like paths
A Littlewood-Paley type theorem for Bergman spaces
Creators: name: Chen, Zeqian
name: Ouyang, Wei
Publisher: name: arXiv
Year: 2011
Subjects: subject: Functional Analysis (math.FA)
subject: Complex Variables (math.CV)
subject: FOS: Mathematics

description: In this paper, we prove that the original Littlewood-Paley $g$-functions can be used to characterize Bergman spaces as well.
description: 6 pages. Tittle changed, Abstract rewritten
Langevin theory of fluctuations in the discrete Boltzmann equation
Creators: name: Gross, M.
name: Cates, M. E.
name: Varnik, F.
name: Adhikari, R.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Computational Physics (physics.comp-ph)
subject: Soft Condensed Matter (cond-mat.soft)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: The discrete Boltzmann equation for both the ideal and a non-ideal fluid is extended by adding Langevin noise terms in order to incorporate the effects of thermal fluctuations. After casting the fluctuating discrete Boltzmann equation in a form appropriate to the Onsager-Machlup theory of linear fluctuations, the statistical properties of the noise are determined by invoking a fluctuation-dissipation theorem at the kinetic level. By integrating the fluctuating discrete Boltzmann equation, the fluctuating lattice Boltzmann equation is obtained, which provides an efficient way to solve the equations of fluctuating hydrodynamics for ideal and non-ideal fluids. Application of the framework to a generic force-based non-ideal fluid model leads to ideal gas-type thermal noise. Simulation results indicate proper thermalization of all degrees of freedom.
description: 24 pages, 2 figures, v2: added corrections and clarifications; as published in J. Stat. Mech
Fluorographene: Two Dimensional Counterpart of Teflon
Creators: name: Nair, R. R.
name: Ren, W. C.
name: Jalil, R.
name: Riaz, I.
name: Kravets, V. G.
name: Britnell, L.
name: Blake, P.
name: Schedin, F.
name: Mayorov, A. S.
name: Yuan, S.
name: Katsnelson, M. I.
name: Cheng, H. M.
name: Strupinski, W.
name: Bulusheva, L. G.
name: Okotrub, A. V.
name: Grigorieva, I. V.
name: Grigorenko, A. N.
name: Novoselov, K. S.
name: Geim, A. K.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We report a stoichiometric derivative of graphene with a fluorine atom attached to each carbon. Raman, optical, structural, micromechanical and transport studies show that the material is qualitatively different from the known graphene-based nonstoichiometric derivatives. Fluorographene is a high-quality insulator (resistivity >10^12 Ohm per square) with an optical gap of 3 eV. It inherits the mechanical strength of graphene, exhibiting Young's modulus of 100 N/m and sustaining strains of 15%. Fluorographene is inert and stable up to 400C even in air, similar to Teflon.
description: to appear in Small 2010
title: Sardegna 2050 CO2 zero: sei progetti strategici
Creators: name: Tramontin, Antonio
name: Zola, Francesca
Publisher: name: UNICApress
Year: 2020

description: Dopo la pandemia da Covid-19 il riequilibrio ambientale costituisce il limite vitale per gli uomini del terzo millennio.
L’inevitabile scenario globale, dove forse gli incidenti si sono incrociati, può essere guardato da un altro orizzonte, come un mosaico di operazioni locali sull’ambiente.
La ricerca progettuale della Facoltà di Ingegneria e Architettura dell’Università degli Studi di Cagliari, di concerto con l’Università delle Arti Applicate di Vienna, e finanziata dalla Regione Autonoma della Sardegna, configura, con fulcro le aree interne, una prospettiva fondamentale delle Politiche Regionali per una Sardegna a CO2 zero nei prossimi trent’anni.
Local and nonlocal pressure Hessian effects in real and synthetic fluid turbulence
Creators: name: Chevillard, Laurent
name: Leveque, Emmanuel
name: Taddia, Francesco
name: Meneveau, Charles
name: Yu, Huidan
name: Rosales, Carlos
Publisher: name: arXiv
Year: 2011
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: The Lagrangian dynamics of the velocity gradient tensor A in isotropic and homogeneous turbulence depend on the joint action of the self-streching term and the pressure Hessian. Existing closures for pressure effects in terms of A are unable to reproduce one important statistical role played by the anisotropic part of the pressure Hessian, namely the redistribution of the probabilities towards enstrophy production dominated regions. As a step towards elucidating the required properties of closures, we study several synthetic velocity fields and how well they reproduce anisotropic pressure effects. It is found that synthetic (i) Gaussian, (ii) Multifractal and (iii) Minimal Turnover Lagrangian Map (MTLM) incompressible velocity fields reproduce many features of real pressure fields that are obtained from numerical simulations of the Navier Stokes equations, including the redistribution towards enstrophy-production regions. The synthetic fields include both spatially local, and nonlocal, anisotropic pressure effects. However, we show that the local effects appear to be the most important ones: by assuming that the pressure Hessian is local in space, an expression in terms of the Hessian of the second invariant Q of the velocity gradient tensor can be obtained. This term is found to be well correlated with the true pressure Hessian both in terms of eigenvalue magnitudes and eigenvector alignments.
description: 10 pages, 4 figures, minor changes, final version, published in Phys. Fluids
The Darboux coordinates for a new family of Hamiltonian operators and linearization of associated evolution equations
Creators: name: Vodova, Jirina
Publisher: name: arXiv
Year: 2010
Subjects: subject: Mathematical Physics (math-ph)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences
subject: 37K05 37K10

description: A. de Sole, V. G. Kac, and M. Wakimoto (arXiv:1004.5387) have recently introduced a new family of compatible Hamiltonian operators of the form $H^{(N,0)}=D^2\circ((1/u)\circ D)^{2n}\circ D$, where $N=2n+3$, $n=0,1,2,...$, $u$ is the dependent variable and $D$ is the total derivative with respect to the independent variable. We present a differential substitution that reduces any linear combination of these operators to an operator with constant coefficients and linearizes any evolution equation which is bi-Hamiltonian with respect to a pair of any nontrivial linear combinations of the operators $H^{(N,0)}$. We also give the Darboux coordinates for $H^{(N,0)}$ for any odd $N\geqslant 3$.
description: 6 pages, AMS-LaTeX, extended version
Annexes-PhD Dissertation-Sustainable Management for Green Competitiveness in the Banking Sector
Creators: name: Nassar, Nour
Publisher: name: Zenodo
Year: 2025
Subjects: subject: Sustainable management
subject: Management

description: Annexes-PhD Dissertation-Sustainable Management for Green Competitiveness in the Banking Sector:

Annex A. General information about the experts.

Annex B. Survey questions.

Annex C. Survey results.
M-flation and its spectators
Creators: name: Postma, Marieke
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: M-flation is an implementation of assisted inflation, in which the inflaton fields are three N_c x N_c non-abelian hermitean matrices. The model can be consistently truncated to an effectively single field inflation model, with all ``spectator'' fields fixed at the origin. We show that starting with random initial conditions for all fields the truncated sector is not a late-time attractor, but instead the system evolves towards quadratic assisted inflation with all fields mass degenerate. Demanding the energy density during inflation to be below the effective quantum gravity scale, we find that the number of fields, and thus the assisted effect, is bounded N_c < 10^2.
description: 26 pages, published version
Letter from Gunnar Myrdal to Frederick P. Keppel, April 22, 1940
Creators: name: Myrdal, Gunnar, 1898-1987
Publisher: name: Columbia University
Year: 2019
Subjects: Race relations
African Americans--Social conditions
Endowments

description: Discussion of Gunnar Myrdal's departure for Sweden in response to the Nazi invasion of Denmark and Norway and Samuel Stouffer's role as acting director of the Carnegie-Myrdal Study in his stead.
Memorandum from Charles Dollard to Frederick P. Keppel, April 15, 1940
Creators: name: Dollard, Charles, 1907-1977
Publisher: name: Columbia University
Year: 2019
Subjects: Race relations
African Americans--Social conditions
Endowments

description: Discussion of Gunnar Myrdal's possible departure for Sweden in the wake of the Nazi invasion of Denmark and Norway.
Product Constructions for Perfect Lee Codes
Creators: name: Etzion, Tuvi
Publisher: name: arXiv
Year: 2011
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: A well known conjecture of Golomb and Welch is that the only nontrivial perfect codes in the Lee and Manhattan metrics have length two or minimum distance three. This problem and related topics were subject for extensive research in the last forty years. In this paper two product constructions for perfect Lee codes and diameter perfect Lee codes are presented. These constructions yield a large number of nonlinear perfect codes and nonlinear diameter perfect codes in the Lee and Manhattan metrics. A short survey and other related problems on perfect codes in the Lee and the Manhattan metrics are also discussed.
description: submitted to IEEE Transactions on Information Theory
Memorandum from Samuel A. Stouffer to Gunnar Myrdal, April 28, 1940
Creators: name: Stouffer, Samuel A., 1900-1960
Publisher: name: Columbia University
Year: 2019
Subjects: Race relations
African Americans--Social conditions
Endowments

description: Discussion of the interim direction of the Carnegie-Myrdal Study in Gunnar Myrdal's absence.
Memorandum from Charles Dollard to Frederick P. Keppel, April 17, 1940
Creators: name: Dollard, Charles, 1907-1977
Publisher: name: Columbia University
Year: 2019
Subjects: Race relations
African Americans--Social conditions
Endowments

description: Discussion of Samuel Stouffer taking on the role of acting director of the Carnegie-Myrdal Study following Gunnar Myrdal's projected return to Sweden.
Topological invariant in three-dimensional band insulators with disorder
Creators: name: Guo, H. -M.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Topological insulators in three dimensions are characterized by a Z2-valued topological invariant, which consists of a strong index and three weak indices. In the presence of disorder, only the strong index survives. This paper studies the topological invariant in disordered three-dimensional system by viewing it as a super-cell of an infinite periodic system. As an application of this method we show that the strong index becomes non-trivial when strong enough disorder is introduced into a trivial insulator with spin-orbit coupling, realizing a strong topological Anderson insulator. We also numerically extract the gap range and determine the phase boundaries of this topological phase, which ?ts well with those obtained from self-consistent Born approximation (SCBA) and the transport calculations.
description: 5 pages and 5 figures; minor changes and publishing version
Algorithmic Randomness and Capacity of Closed Sets
Creators: name: Cenzer, Douglas
name: Brodhead, Paul
name: Toska, Ferit
name: Wyman, Sebastian
Publisher: name: arXiv
Year: 2011
Subjects: subject: Logic in Computer Science (cs.LO)
subject: Logic (math.LO)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics
subject: F.4.1

description: We investigate the connection between measure, capacity and algorithmic randomness for the space of closed sets. For any computable measure m, a computable capacity T may be defined by letting T(Q) be the measure of the family of closed sets K which have nonempty intersection with Q. We prove an effective version of Choquet's capacity theorem by showing that every computable capacity may be obtained from a computable measure in this way. We establish conditions on the measure m that characterize when the capacity of an m-random closed set equals zero. This includes new results in classical probability theory as well as results for algorithmic randomness. For certain computable measures, we construct effectively closed sets with positive capacity and with Lebesgue measure zero. We show that for computable measures, a real q is upper semi-computable if and only if there is an effectively closed set with capacity q.
Constraints on the induced gravitational wave background from primordial black holes
Creators: name: Bugaev, Edgar
name: Klimai, Peter
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We perform a consistent calculation of primordial black hole (PBH) mass spectrum and second-order induced gravitational wave (GW) background produced from primordial scalar perturbations in radiation era of the early Universe. It is shown that the maximal amplitudes of the second order GW spectrum that can be approached without conflicting with the PBH data do not depend significantly on the shape of primordial perturbation spectrum. The constraints on the GW background obtained in previous works are extended to a wider GW frequency range. We discuss the applicability of the currently available pulsar timing limits for obtaining the constraints on scalar power spectrum and PBH abundance and show that they can be used for strongly constraining the PBH number density in the PBH mass range $\sim (0.03 - 10) M_{\odot}$.
description: 10 pages, 4 figures. v2 - revised version, accepted for publication in Phys. Rev. D
Letter from Frederick P. Keppel to Gunnar Myrdal, April 24, 1940
Creators: name: Keppel, Frederick P. (Frederick Paul), 1875-1943
Publisher: name: Columbia University
Year: 2019
Subjects: Race relations
African Americans--Social conditions
Endowments

description: Frederick P. Keppel writes to discuss Gunnar Myrdal's eminent departure for Sweden in the wake of the Nazi invasion of Denmark and Norway.
Alternative conformal quantum mechanics
Creators: name: Ho, Shih-Hao
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We investigate a one dimensional quantum mechanical model, which is invariant under translations and dilations but does not respect the conventional conformal invariance. We describe the possibility of modifying the conventional conformal transformation such that a scale invariant theory is also invariant under this new conformal transformation.
Safe passage letter for Gunnar Myrdal, April 24, 1940
Creators: name: Carnegie Corporation Of New York
Publisher: name: Columbia University
Year: 2019
Subjects: Race relations
African Americans--Social conditions
Endowments

description: Letter written by the Carnegie Corporation vouching for the legal protection of Gunnar Myrdal and his family as they returned to Sweden in the wake of the Nazi invasion of Norway and Denmark.
Lifshitz solutions in supergravity and string theory
Creators: name: Gregory, Ruth
name: Parameswaran, Susha L.
name: Tasinato, Gianmassimo
name: Zavala, Ivonne
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We derive Lifshitz configurations in string theory for general dynamical exponents z \geq 1. We begin by obtaining simple Li x Omega solutions to supergravities in diverse dimensions, with Omega a compact constant curvature manifold. Then we uplift the solutions to ten dimensions, providing configurations that correspond to warped compactifications in Type II string theory.
description: 18 pages, v2: 5d solution corrected, typos corrected, references added
Tactics for Reasoning modulo AC in Coq
Creators: name: Braibant, Thomas
name: Pous, Damien
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mathematical Software (cs.MS)
subject: Logic in Computer Science (cs.LO)
subject: FOS: Computer and information sciences

description: We present a set of tools for rewriting modulo associativity and commutativity (AC) in Coq, solving a long-standing practical problem. We use two building blocks: first, an extensible reflexive decision procedure for equality modulo AC; second, an OCaml plug-in for pattern matching modulo AC. We handle associative only operations, neutral elements, uninterpreted function symbols, and user-defined equivalence relations. By relying on type-classes for the reification phase, we can infer these properties automatically, so that end-users do not need to specify which operation is A or AC, or which constant is a neutral element.
description: 16p
Numerical integration of variational equations
Creators: name: Skokos, Ch.
name: Gerlach, E.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Mathematical Physics (math-ph)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: We present and compare different numerical schemes for the integration of the variational equations of autonomous Hamiltonian systems whose kinetic energy is quadratic in the generalized momenta and whose potential is a function of the generalized positions. We apply these techniques to Hamiltonian systems of various degrees of freedom, and investigate their efficiency in accurately reproducing well-known properties of chaos indicators like the Lyapunov Characteristic Exponents (LCEs) and the Generalized Alignment Indices (GALIs). We find that the best numerical performance is exhibited by the \textit{`tangent map (TM) method'}, a scheme based on symplectic integration techniques which proves to be optimal in speed and accuracy. According to this method, a symplectic integrator is used to approximate the solution of the Hamilton's equations of motion by the repeated action of a symplectic map $S$, while the corresponding tangent map $TS$, is used for the integration of the variational equations. A simple and systematic technique to construct $TS$ is also presented.
description: 27 pages, 11 figures, to appear in Phys. Rev. E
SGR 0418+5729 as an evolved Quark-Nova compact remnant
Creators: name: Ouyed, Rachid
name: Leahy, Denis
name: Niebergal, Brian
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Soft gamma repeaters and anomalous X-ray pulsars are believed to be magnetars, i.e. neutron stars powered by extreme magnetic fields, B~10^(14)-10^(15) Gauss. The recent discovery of a soft gamma repeater with low magnetic field (< 7.5x10^(12) Gauss), SGR 0418+5729, which shows bursts similar to those of SGRs, implies that a high surface dipolar magnetic field might not be necessary for magnetar-like activity. We show that the quiescent and bursting properties of SGR 0418+5729 find natural explanations in the context of low-magnetic field Quark-Nova (detonative transition from a neutron star to a quark star) remnants, i.e. an old quark star surrounded by degenerate (iron-rich) Keplerian ring/debris ejected during the Quark-Nova explosion. We find that a 16 Myr old quark star surrounded by a ~ 10^(-10)xM_sun ring, extending in radius from ~ 30 km to 60 km, reproduces many observed properties of SGR 0418+5729. The SGR-like burst is caused by magnetic penetration of the inner part of the ring and subsequent accretion. Radiation feedback results in months-long accretion from the ring's non-degenerate atmosphere which matches well the observed decay phase. We make specific predictions (such as an accretion glitch of Delta P/P ~ - 2x10^(-11) during burst and a sub-keV proton cyclotron line from the ring) that can be tested by sensitive observations.
description: Version to appear on MNRAS (7 journals pages. 3 figures). Extended discussion and conclusions. Elaboration on predictions of the model
Quantum dot Rabi rotations beyond the weak exciton-phonon coupling regime
Creators: name: McCutcheon, Dara P. S.
name: Nazir, Ahsan
Publisher: name: arXiv
Year: 2010
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study the excitonic dynamics of a driven quantum dot under the influence of a phonon environment, going beyond the weak exciton-phonon coupling approximation. By combining the polaron transform and time-local projection operator techniques we develop a master equation that can be valid over a much larger range of exciton-phonon coupling strengths and temperatures than the standard weak-coupling approach. For the experimentally relevant parameters considered here, we find that the weak-coupling and polaron theories give very similar predictions for low temperatures (below 30 K), while at higher temperatures we begin to see discrepancies between the two. This is due to the fact that, unlike the polaron approach, the weak-coupling theory is incapable of capturing multiphonon effects, while it also does not properly account for phonon-induced renormalisation of the driving frequency. In particular, we find that the weak-coupling theory often overestimates the damping rate when compared to that predicted by the polaron theory. Finally, we extend our theory to include non-Markovian effects and find that, for the parameters considered here, they have little bearing on the excitonic Rabi rotations when plotted as a function of pulse area.
description: 24 pages, 4 figures, comments welcome. Published version, changes to formatting and minor alterations to text, reference added
Letter from Charles Dollard to Samuel Stouffer, April 18, 1940
Creators: name: Dollard, Charles, 1907-1977
Publisher: name: Columbia University
Year: 2019
Subjects: Race relations
African Americans--Social conditions
Endowments

description: Discussion of Samuel Stouffer's upcoming role as acting director of the Carnegie-Myrdal Study following Gunnar Myrdal's departure for Sweden.
Multi-isotope degeneracy of neutrinoless double beta decay mechanisms in the quasi-particle random phase approximation
Creators: name: Faessler, Amand
name: Fogli, G. L.
name: Lisi, E.
name: Rotunno, A. M.
name: Simkovic, F.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Experiment (nucl-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We calculate nuclear matrix elements (NME) of neutrinoless double beta decay in four different candidate nuclei (Ge-76, Se-82, Mo-100, Te-130) within the quasiparticle random phase approximation (QRPA) and its uncertainties. We assume (up to) four coexisting mechanisms for neutrinoless double beta decay, mediated by light Majorana neutrino exchange, heavy Majorana neutrino exchange, R-parity breaking supersymmetry, and squark-neutrino, interfering either constructively or destructively with each other. We find that, unfortunately, current NME uncertainties appear to prevent a robust determination of the relative contribution of each mechanism to the decay amplitude, even assuming accurate measurements of decay lifetimes. The near-degeneracy of the decay mechanisms is analyzed with simple algebraic techniques, which do not involve assumptions about the statistical distribution of errors. We discuss implications of such degeneracy on prospective searches for absolute neutrino masses.
description: Expanded discussion and bibliography; to appear in Phys. Rev. D
Environmentally Activated Tunneling Events in a Hybrid Single-Electron Box
Creators: name: Saira, O. -P.
name: Mottonen, M.
name: Maisi, V. F.
name: Pekola, J. P.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We have measured individual tunneling events and Coulomb step shapes in single-electron boxes with opaque superconductor-normal metal tunnel junctions. We observe anomalous broadening of the Coulomb step with decreasing temperature in a manner that is consistent with activation of first-order tunneling events by an external dissipative electromagnetic environment. We demonstrate that the rates for energetically unfavourable tunneling events saturate to finite values at low temperatures, and that the saturation level can be suppressed by more than an order of magnitude by a capacitive shunt near the device. The findings are important in assessing the performance limits of any single-electronic device. In particular, master equation based simulations show that the electromagnetic environment realized in the capacitively shunted devices allows for a metrologically accurate charge pump based on hybrid tunnnel junctions.
description: 6 pages, 3 figures; reformatted in PRB style, embedded EPAPS contents in the main article
Notes on SUSY Gauge Theories on Three-Sphere
Creators: name: Hama, Naofumi
name: Hosomichi, Kazuo
name: Lee, Sungjay
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We extend the formula for partition functions of N=2 superconformal gauge theories on S^3 obtained recently by Kapustin, Willett and Yaakov, to incorporate matter fields with arbitrary R-charge assignments. We use the result to check that the self-mirror property of N=4 SQED with two electron hypermultiplets is preserved under a certain mass deformation which breaks the supersymmetry to N=2.
description: 1+13 pages, (v3) one section added to present an integral formula for the partition function of general gauge theory. The version published in JHEP
Quantum integrability of the Alday-Arutyunov-Frolov model
Creators: name: Melikyan, A.
name: Pinzul, A.
name: Rivelles, V. O.
name: Weber, G.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We investigate the quantum integrability of the Alday-Arutyunov-Frolov (AAF) model by calculating the three-particle scattering amplitude at the first non-trivial order and showing that the S-matrix is factorizable at this order. We consider a more general fermionic model and find a necessary constraint to ensure its integrability at quantum level. We then show that the quantum integrability of the AAF model follows from this constraint. In the process, we also correct some missed points in earlier works.
description: 40 pages; Replaced with published version. Appendix and comments added
A matrix product solution for a nonequilibrium steady state of an XX chain
Creators: name: Znidaric, Marko
Publisher: name: arXiv
Year: 2010
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A one dimensional XX spin chain of finite length coupled to reservoirs at both ends is solved exactly in terms of a matrix product state ansatz. An explicit representation of matrices of fixed dimension 4 independent of the chain length is found. Expectations of all observables are evaluated, showing that all connected correlations, apart from nearest neighbor z-z, are zero.
description: 11 pages
Double step structure and meandering due to the many body interaction at GaN(0001) surface in N-rich conditions
Creators: name: Załuska-Kotur, Magdalena A.
name: Krzyżewski, Filip
name: Krukowski, Stanisław
Publisher: name: arXiv
Year: 2010
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Growth of gallium nitride on GaN(0001) surface is modeled by Monte Carlo method. Simulated growth is conducted in N-rich conditions, hence it is controlled by Ga atoms surface diffusion. It is shown that dominating four-body interactions of Ga atoms can cause step flow anisotropy. Kinetic Monte Carlo simulations show that parallel steps with periodic boundary conditions form double terrace structures, whereas initially V -shaped parallel step train initially bends and then every second step moves forward, building regular, stationary ordering as observed during MOVPE or HVPE growth of GaN layers. These two phenomena recover surface meandered pair step pattern observed, since 1953, on many semiconductor surfaces, such as SiC, Si or GaN. Change of terrace width or step orientation particle diffusion jump barriers leads either to step meandering or surface roughening. Additionally it is shown that step behavior changes with the Schwoebel barrier height. Furthermore, simulations under conditions corresponding to very high external particle flux result in triangular islands grown at the terraces. All structures, emerging in the simulations, have their corresponding cases in the experimental results.
description: 25 pages, 8 figures
Material screening and selection for XENON100
Creators: name: XENON100 Collaboration
name: Aprile, E.
name: Arisaka, K.
name: Arneodo, F.
name: Askin, A.
name: Baudis, L.
name: Behrens, A.
name: Bokeloh, K.
name: Brown, E.
name: Cardoso, J. M. R.
name: Choi, B.
name: Cline, D.
name: Fattori, S.
name: Ferella, A. D.
name: Giboni, K. L.
name: Kish, A.
name: Lam, C. W.
name: Lamblin, J.
name: Lang, R. F.
name: Lim, K. E.
name: Lopes, J. A. M.
name: Undagoitia, T. Marrodan
name: Mei, Y.
name: Fernandez, A. J. Melgarejo
name: Ni, K.
name: Oberlack, U.
name: Orrigo, S. E. A.
name: Pantic, E.
name: Plante, G.
name: Ribeiro, A. C. C
name: Santorelli, R.
name: Santos, J. M. F. dos
name: Schumann, M.
name: Shagin, P.
name: Teymourian, A.
name: Thers, D.
name: Tziaferi, E.
name: Wang, H.
name: Weinheimer, C.
name: Laubenstein, M.
name: Nisi, S.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: Results of the extensive radioactivity screening campaign to identify materials for the construction of XENON100 are reported. This Dark Matter search experiment is operated underground at Laboratori Nazionali del Gran Sasso (LNGS), Italy. Several ultra sensitive High Purity Germanium detectors (HPGe) have been used for gamma ray spectrometry. Mass spectrometry has been applied for a few low mass plastic samples. Detailed tables with the radioactive contaminations of all screened samples are presented, together with the implications for XENON100.
description: 8 pages, 1 figure
Letter from Charles Dollard to Gunnar Myrdal, March 7, 1940
Creators: name: Dollard, Charles, 1907-1977
Publisher: name: Columbia University
Year: 2019
Subjects: Race relations
African Americans--Social conditions
Endowments

description: Letter confirming that Frederick P. Keppel has authorized a budget increase for the Carnegie-Myrdal Study requested by Myrdal in a February 13, 1940 letter.
Vector meson production in pp collisions at $\sqrt{s}=7\rm{~TeV}$, measured with the ALICE detector
Creators: name: De Falco, A.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Vector mesons are key probes of the hot and dense state of strongly interacting matter produced in heavy ion collisions. Their dileptonic decay channel is particularly suitable for these studies, since dileptons have negligible final state interactions in hadronic matter. A preliminary measurement of the $ϕ$ and $ω$ differential cross sections was performed by the ALICE experiment in pp collisions at $\sqrt{s}=7$ TeV, through their decay in muon pairs. The $p_{\rm T}$ and rapidity regions covered in this analysis are $p_{\rm T}>1$ GeV$/c$ and $2.5 < y < 4$.
description: 4 pages, 4, figures, proceedings of the Quark Matter 2011 conference
Memorandum from Charles Dollard to Frederick P. Keppel, April 13, 1940
Creators: name: Dollard, Charles, 1907-1977
Publisher: name: Columbia University
Year: 2019
Subjects: Race relations
African Americans--Social conditions
Endowments

description: Discussion of Gunnar Myrdal's return to Sweden following the Nazi invasion of Denmark and Norway and Samuel Stouffer's subsequent role as acting director of the Carnegie-Myrdal Study.
Charge Symmetry Breaking in Parton Distribution Functions from Lattice QCD
Creators: name: Horsley, R.
name: Nakamura, Y.
name: Pleiter, D.
name: Rakow, P. E. L.
name: Schierholz, G.
name: Stüben, H.
name: Thomas, A. W.
name: Winter, F.
name: Young, R. D.
name: Zanotti, J. M.
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: By determining the quark momentum fractions of the octet baryons from N_f=2+1 lattice simulations, we are able to predict the degree of charge symmetry violation in the parton distribution functions of the nucleon. This is of importance, not only as a probe of our understanding of the non-perturbative structure of the proton but also because such a violation constrains the accuracy of global fits to parton distribution functions and hence the accuracy with which, for example, cross sections at the LHC can be predicted. A violation of charge symmetry may also be critical in cases where symmetries are used to guide the search for physics beyond the Standard Model.
description: 4 pages, 3 figures, 1 table. Minor changes. Published version
Sub-Poissonian fluctuations in a 1D Bose gas: from the quantum quasi-condensate to the strongly interacting regime
Creators: name: Jacqmin, Thibaut
name: Armijo, Julien
name: Berrada, Tarik
name: Kheruntsyan, Karen
name: Bouchoule, Isabelle
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We report on local measurements of atom number fluctuations in slices of a single 1D Bose gas with repulsive interactions. For weakly interacting gases, the fluctuations are super-Poissonian at intermediate atomic densities and become sub-Poissonian at high densities once the gas enters into the quantum quasi-condensate regime. At stronger interactions, when approaching the fermionization regime, we no longer observe super-Poissonian statistics; the fluctuations go from Poissonian to sub-Poissonian as the density is increased, as those in a Fermi gas.
title: Jahrbuch der Berliner Museen, Bd. 63: 2022(2023): Jahrbuch der Berliner Museen
title: 2022(2023): Jahrbuch der Berliner Museen
titleType: AlternativeTitle
Creators: name: Jahrbuch Der Berliner Museen
Publisher: name: Jahrbuch der Berliner Museen
Year: 2023

description: Die Wiederentdeckung von Sascha Wiederhold – fortgesetzt durch das Publikum...135-156
Kunst hinter Schloss und Riegel – die geheimen Westberliner Flak-Kisten....91-134
Ludwig Pollak, Wilhelm von Bode’s Trusted Art Dealer on the Roman Art Market (1902–1929):...65-90
Die Erwerbungen aus Rhages/Rayy und ihre Wege in die Islamische Abteilung der Berliner Museen...53-63
A Rare Book Rediscovered...25-51
Attic Black-Glazed Pottery in the Collection of the Antikensammlung...7-24
Inhalt
Titelei
The competition-common enemy graphs of digraphs satisfying Conditions $C(p)$ and $C'(p)$
Creators: name: Sano, Yoshio
Publisher: name: arXiv
Year: 2010
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 05C20, 06A06

description: S. -R. Kim and F. S. Roberts (2002) introduced the following conditions $C(p)$ and $C'(p)$ for digraphs as generalizations of the condition for digraphs to be semiorders. The condition $C(p)$ (resp. $C'(p)$) is: For any set $S$ of $p$ vertices in $D$, there exists $x \in S$ such that $N^+_D(x) \subseteq N^+_D(y)$ (resp. $N^-_D(x) \subseteq N^-_D(y)$) for all $y \in S$, where $N^+_D(x)$ (resp. $N^-_D(x)$) is the set of out-neighbors (resp. in-neighbors) of $x$ in $D$. The competition graph of a digraph $D$ is the (simple undirected) graph which has the same vertex set as $D$ and has an edge between two distinct vertices $x$ and $y$ if $N^+_D(x) \cap N^+_D(y) \neq \emptyset$. Kim and Roberts characterized the competition graphs of digraphs which satisfy Condition $C(p)$. The competition-common enemy graph of a digraph $D$ is the graph which has the same vertex set as $D$ and has an edge between two distinct vertices $x$ and $y$ if it holds that both $N^+_D(x) \cap N^+_D(y) \neq \emptyset$ and $N^-_D(x) \cap N^-_D(y) \neq \emptyset$. In this note, we characterize the competition-common enemy graphs of digraphs satisfying Conditions $C(p)$ and $C'(p)$.
description: 8 pages, 2 figures
Spontaneous spiking in an autaptic Hodgkin-Huxley set up
Creators: name: Li, Yunyun
name: Schmid, Gerhard
name: Hanggi, Peter
name: Schimansky-Geier, Lutz
Publisher: name: arXiv
Year: 2010
Subjects: subject: Biological Physics (physics.bio-ph)
subject: Neurons and Cognition (q-bio.NC)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: The effect of intrinsic channel noise is investigated for the dynamic response of a neuronal cell with a delayed feedback loop. The loop is based on the so-called autapse phenomenon in which dendrites establish not only connections to neighboring cells but as well to its own axon. The biophysical modeling is achieved in terms of a stochastic Hodgkin-Huxley model containing such a built in delayed feedback. The fluctuations stem from intrinsic channel noise, being caused by the stochastic nature of the gating dynamics of ion channels. The influence of the delayed stimulus is systematically analyzed with respect to the coupling parameter and the delay time in terms of the interspike interval histograms and the average interspike interval. The delayed feedback manifests itself in the occurrence of bursting and a rich multimodal interspike interval distribution, exhibiting a delay-induced reduction of the spontaneous spiking activity at characteristic frequencies. Moreover, a specific frequency-locking mechanism is detected for the mean interspike interval.
description: 8 pages, 10 figures
Letter from T. Arnold Hill to Gunnar Myrdal, March 1, 1940
Creators: name: Hill, T. Arnold (Thomas Arnold), 1888-1947
Publisher: name: Columbia University
Year: 2019
Subjects: Race relations
African Americans--Social conditions
Endowments

description: Letter enclosed with copies of the Carnegie-Myrdal questionnaires to be mailed to local chapters of the National Urban League, requesting Myrdal's review and approval of these documents prior to printing and circulation.
Nonlocal correlations of the local density of states in disordered quantum Hall systems
Creators: name: Champel, T.
name: Florens, S.
name: Raikh, M. E.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Motivated by recent high-resolution scanning tunneling microscopy (STM) experiments in the quantum Hall regime both on massive two-dimensional electron gas and on graphene, we consider theoretically the disorder averaged nonlocal correlations of the local density of states (LDoS) for electrons moving in a smooth disordered potential in the presence of a high magnetic field. The intersection of two quantum cyclotron rings around the two different positions of the STM tip, correlated by the local disorder, provides peaks in the spatial dispersion of the LDoS-LDoS correlations when the intertip distance matches the sum of the two quantum Larmor radii. The energy dependence displays also complex behavior: for the local LDoS-LDoS average (i.e., at coinciding tip positions), sharp positive correlations are obtained for tip voltages near Landau level, and weak anticorrelations otherwise.
description: 11 pages, 8 figures ; v2: 2 references added and small extension of conclusion, similar to published version
Letter from Eugene Kinckle Jones to Gunnar Myrdal, April 4, 1940
Creators: name: Jones, Eugene Kinckle, 1885-1954
Publisher: name: Columbia University
Year: 2019
Subjects: Race relations
African Americans--Social conditions
Endowments

description: National Urban League Executive Secretary Eugene Kinckle Jones writes to Gunnar Myrdal regarding T. Arnold Hill's work as liaison between the League and the Carnegie-Myrdal Study, and how Hill's salary will be paid following his resignation from the League.
Indización Temática de documentos LILACS 2023: Descriptores DeCS/MesH 2023 destacados para uso en la indización temática
Creators: name: Suga, Sueli Mitiko Yano
Publisher: name: Zenodo
Year: 2023
Subjects: subject: Cabeçalhos de Assunto em Medicina
subject: Capacitación Profesional
subject: https://decs.bvsalud.org/ths/resource/?id=56243&filter=ths_termall&q=lilacs
subject: https://decs.bvsalud.org/ths/resource/?id=38905&filter=ths_termall&q=decs
subject: https://decs.bvsalud.org/ths/resource/?id=13746&filter=ths_termall&q=descritores
subject: https://decs.bvsalud.org/ths/resource/?id=46&filter=ths_termall&q=Indexa%C3%A7%C3%A3o%20como%20Assunto

description: Sesión virtual sobre Indizacion de Documentos según la Metodología LILACS 2023 Fecha: 27 de abril de 2023 Objetivo: Presentar algunos de los nuevos descriptores DeCS/MeSH y sus actualizaciones Tema: Descriptores DeCS/MesH 2023 destacados para uso en la indización temática Apertura: Sueli Mitiko Yano Suga Ponente: Sueli Mitiko Yano Suga Complemento de esta presentación por: Luciana Beatriz Piovezan Rio Branco DeCS/MeSH: actualización de la edición - DOI: 10.5281/zenodo.7876054 Grabación: https://youtu.be/_0DH5KRv_4g Visite la página con toda la información: https://lilacs.bvsalud.org/es/sesiones-virtuales-lilacs/indizacion-de-documentos-segun-la-metodologia-lilacs-2023/ Organización: Laís Silva Sueli Mitiko Yano Suga
description: {"references": ["https://lilacs.bvsalud.org/es/sesiones-virtuales-lilacs/indizacion-de-documentos-segun-la-metodologia-lilacs-2023/"]}
Thermal Upsilon(1s) and chi_b1 suppression in sqrt(s_NN)=2.76 TeV Pb-Pb collisions at the LHC
Creators: name: Strickland, Michael
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: I compute the thermal suppression of the Upsilon(1s) and chi_b1 states in sqrt(s_NN)=2.76 TeV Pb-Pb collisions. Using the suppression of each of these states I estimate the total R_AA for the Upsilon(1s) state as a function of centrality, rapidity, and transverse momentum. I find less suppression of the chi_b1 state than would be traditionally assumed; however, my final results for the total Upsilon(1s) suppression are in good agreement with recent preliminary CMS data.
description: 4 pages, 4 figures; v4: published version