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We calculate the free energy, energy and entropy in the matrix quantum mechanical formulation of 2D string theory in a background strongly perturbed by tachyons with the imaginary Minkowskian momentum $\pm i/R$ (``Sine-Liouville'' theory).…

高能物理 - 理论 · 物理学 2009-11-07 Sergei Yu. Alexandrov , Vladimir A. Kazakov

In an attempt to derive thermodynamics from classical mechanics, an approximate expression for the equilibrium temperature of a finite system has been derived [M. Bianucci, R. Mannella, B. J. West, and P. Grigolini, Phys. Rev. E 51, 3002…

统计力学 · 物理学 2015-06-24 Artur B. Adib

Thermodynamic perturbation theory is employed to derive analytical expressions for the equilibrium linear susceptibility and specific heat of lattices of anisotropic classical spins weakly coupled by the dipole-dipole interaction. The…

材料科学 · 物理学 2009-11-07 P. E. Jönsson , J. L. Garcia-Palacios

The quintessential description of Kondo physics in equilibrium is obtained within a scaling picture that shows the buildup of Kondo screening at low temperature. For the non-equilibrium Kondo model with a voltage bias the key new feature…

强关联电子 · 物理学 2010-03-22 Peter Fritsch , Stefan Kehrein

A test mass, $M$, moving through an ambient medium of light particles with lower average kinetic energy than itself suffers a deceleration caused by its scattering of the light particles. The phenomenon is usually referred to as dynamical…

天体物理学 · 物理学 2015-06-24 D. Syer

Our recent theoretical developments related to the nonrelativistic and relativistic fluctuation-electromagnetic interactions of bodies with different temperatures moving translationally and (or) rotationally relative to each other are…

介观与纳米尺度物理 · 物理学 2020-02-11 George Dedkov , Arthur Kyasov

The interaction rate of an ultrarelativistic active neutrino at a temperature below the electroweak crossover plays a role in leptogenesis scenarios based on oscillations between active neutrinos and GeV-scale sterile neutrinos. By making…

高能物理 - 唯象学 · 物理学 2020-01-08 G. Jackson , M. Laine

We investigate various scenarios which include interaction forms between dark matter and dark energy that exhibit sign reverse, namely where the transfer of energy between the dark fluids changes sign during evolution. We study the…

宇宙学与河外天体物理 · 物理学 2019-11-06 Supriya Pan , Weiqiang Yang , Chiranjeeb Singha , Emmanuel N. Saridakis

We analyse the correlated back and forth dynamics and dynamic heterogeneities, i.e. the presence of fast and slow ions, for a lithium metasilicate system via computer simulations. For this purpose we define, in analogy to previous work in…

无序系统与神经网络 · 物理学 2009-11-07 Andreas Heuer , Magnus Kunow , Michael Vogel , Radha D. Banhatti

Most studies of correlations between X-ray and optical properties of galaxy clusters have used the largest samples of data available, regardless of the morphological types of clusters included. Given the increasing evidence that morphology…

天体物理学 · 物理学 2009-10-28 Christina M. Bird , Richard F. Mushotzky , Christopher A. Metzler

A two-field gyrofluid model including ion finite Larmor radius (FLR) corrections, magnetic fluctuations along the ambient field and electron inertia is used to study two-dimensional reconnection in a low $\beta_e$ collisionless plasma, in a…

等离子体物理 · 物理学 2024-05-24 C. Granier , E. Tassi , D. Laveder , T. Passot , P. L. Sulem

We study heat conduction through one-dimensional homogeneous lattices in the presence of the nonlinear on-site potentials containing the bounded and unbounded parts, and the harmonic interaction potential. We observe the occurrence of…

统计力学 · 物理学 2012-08-16 Bao-quan Ai , Wei-rong Zhong , Bambi Hu

The self-energy functional theory (SFT) is generalized to describe the real-time dynamics of correlated lattice-fermion models far from thermal equilibrium. This is achieved by means of a reformulation of the original equilibrium theory in…

强关联电子 · 物理学 2013-10-21 Felix Hofmann , Martin Eckstein , Enrico Arrigoni , Michael Potthoff

We study the slow dynamics of salol by varying both temperature and pressure using photon correlation spectroscopy and pressure-volume-temperature measurements, and compare the behavior of the structural relaxation time with equations…

软凝聚态物质 · 物理学 2016-11-25 L. Comez , S. Corezzi , D. Fioretto , H. Kriegs , A. Best , W. Steffen

Optical second-harmonic-generation(SHG) observations and precise X-ray diffraction experiments have been performed on quantum paraelectrics KTaO3 (KTO) and relaxor K(1-x)LixTaO3 with x=3% (KLT-3) and 7% (KLT-7). It is found in KLT-3 and…

材料科学 · 物理学 2009-11-11 Hiroko Yokota , Yoshiaki Uesu , Charlotte Malibert , Jean-Michel Kiat

When the difference between changes in energy and entropy at a given temperature is correlated with the ratio between the same changes in energy and entropy at zero average free energy of an ensemble of similar but distinct molecule-sized…

综合物理 · 物理学 2009-06-17 Petr Zimak , Silvia Terenzi , Peter Strazewski

Many scaling relations are observed for self-gravitating systems in the universe. We explore the consistent understanding of them from a simple principle based on the proposal that the collision-less dark matter fluid terns into a turbulent…

天体物理学 · 物理学 2010-02-04 Akika Nakamichi , Masahiro Morikawa

We develop a low-order conserving approximation for the interacting resonant-level model (IRLM), and apply it to (i) thermal equilibrium, (ii) nonequilibrium steady state, and (iii) nonequilibrium quench dynamics. Thermal equilibrium is…

强关联电子 · 物理学 2014-10-10 Yuval Vinkler-Aviv , Avraham Schiller , Frithjof B. Anders

We model the effects of shocks on the diffuse, X-ray emitting baryons in clusters of galaxies. Shocks separate the infalling from the inner gas nearly at equilibrium, and dominate the compression and the density gradients of the latter in…

天体物理学 · 物理学 2009-10-30 A. Cavaliere , N. Menci , P. Tozzi

We develop a nonperturbative zero-temperature theory for the dynamic response functions of interacting one-dimensional spin-1/2 fermions. In contrast to the conventional Luttinger liquid theory, we take into account the nonlinearity of the…

强关联电子 · 物理学 2010-12-16 Thomas L. Schmidt , Adilet Imambekov , Leonid I. Glazman