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Smoothed Dissipative Particle Dynamics (SDPD) is a mesoscopic method which allows to select the level of resolution at which a fluid is simulated. In this work, we study the consistency of the resulting thermodynamic properties as a…

统计力学 · 物理学 2016-10-19 G. Faure , J. Roussel , J. -B. Maillet , G. Stoltz

This study investigates the steady Boltzmann equation in one spatial variable for a polyatomic single-component gas in a half-space. Inflow boundary conditions are assumed at the half-space boundary, where particles entering the half-space…

偏微分方程分析 · 数学 2026-02-03 Niclas Bernhoff , Stephane Brull , Eddie Wadbro

Thermodynamic conventions suffer from describing dynamical distinctions, especially when the structural and energetic changes induced by localized rare events are insignificant. By using the ensemble theory in the trajectory space, we…

统计力学 · 物理学 2023-03-30 Qi-Jun Ye , Xin-Zheng Li

We propose an effective field-theoretic framework for analyzing Transformer attention through a thermodynamic lens. By constructing a Lagrangian on the information manifold equipped with the Fisher metric, we show that, within the…

机器学习 · 计算机科学 2026-02-16 Gunn Kim

We derive the fundamental thermodynamic equation for Fermi-Dirac and Bose-Einstein quantum gases, which contains the first order contribution due to the quantum nature of the gas particles. Then, we analyze the fundamental equation in the…

广义相对论与量子宇宙学 · 物理学 2024-03-22 Sasha A. Zaldivar , Hernando Quevedo

Thermodynamic properties of confined systems depend on sizes of the confinement domain due to quantum nature of particles. Here we show that shape also enters as a control parameter on thermodynamic state functions. By considering specially…

介观与纳米尺度物理 · 物理学 2019-01-29 Alhun Aydin , Altug Sisman

The fluctuations in the ideal quantum gases are studied using the strongly intensive measures $\Delta[A,B]$ and $\Sigma[A,B]$ defined in terms of two extensive quantities $A$ and $B$. In the present paper, these extensive quantities are…

核理论 · 物理学 2014-03-03 M. I. Gorenstein , M. Rybczynski

Stochastic partial differential equations can be used to model second order thermodynamical phase transitions, as well as a number of critical out-of-equilibrium phenomena. In (2+1) dimensions, many of these systems are conjectured (and…

统计力学 · 物理学 2013-05-29 L. Moriconi , M. Moriconi

We present an improved many-body T-matrix theory for partially Bose-Einstein condensed atomic gases by treating the phase fluctuations exactly. The resulting mean-field theory is valid in arbitrary dimensions and able to describe the…

凝聚态物理 · 物理学 2014-10-13 U. Al Khawaja , J. O. Andersen , N. P. Proukakis , H. T. C Stoof

One-dimensional systems, such as nanowires or electrons moving along strong magnetic field lines, have peculiar thermalization physics. The binary collision of point-like particles, typically the dominant process for reaching thermal…

原子物理 · 物理学 2024-07-10 M. Eltohfa , Xinghan Wang , Colton M. Griffin , F. Robicheaux

We develop a geometric theory of phase transitions (PTs) for Hamiltonian systems in the microcanonical ensemble. This theory allows to reformulate Bachmann's classification of PTs for finite-size systems in terms of geometric properties of…

统计力学 · 物理学 2022-06-29 Loris Di Cairano

In systems with detailed balance, the stationary distribution and the equilibrium distribution are identical, creating a clear connection between energetic and entropic quantities. Many driven systems violate detailed balance and still pose…

统计力学 · 物理学 2025-01-22 Markus Hofer , Jan Korbel , Rudolf Hanel , Stefan Thurner

We report exact numerical calculation of chemical potential, condensate fraction and specific heat of $N$ non-interacting bosons confined in an isotropic harmonic oscillator trap in one, two and three dimensions, as also for interacting…

量子气体 · 物理学 2013-08-14 Sanchari Goswami , Tapan Kumar Das , Anindya Biswas

The non extensive thermodynamics of an ideal gas composed by bosons and/or fermions is derived from its partition function for systems with finite chemical potentials. It is shown that the thermodynamical quantities derived in the present…

高能物理 - 唯象学 · 物理学 2014-11-19 Eugenio Megias , Debora P. Menezes , Airton Deppman

The role of dimensionality on the electronic performance of thermoelectric devices is clarified using the Landauer formalism, which shows that the thermoelectric coefficients are related to the transmission, T(E), and how the conducing…

介观与纳米尺度物理 · 物理学 2011-09-15 Raseong Kim , Supriyo Datta , Mark S. Lundstrom

The idea that a thermodynamic glass transition of some sort underlies the observed glass formation has been highly debated since Kauzmann first stressed the hypothetical entropy crisis that could take place if one were able to equilibrate…

无序系统与神经网络 · 物理学 2022-09-23 Chiara Cammarota , Misaki Ozawa , Gilles Tarjus

Monte Carlo simulations are performed in classical phase space for a one-dimensional quantum harmonic crystal. Symmetrization effects for spinless bosons and fermions are quantified. The algorithm is tested for a range of parameters against…

量子物理 · 物理学 2019-04-25 Phil Attard

We investigate the balanced $M=4$, $p=4$ spin-glass model for a one-dimensional long-range proxy for the finite dimensional short-range $p$-spin glass model to examine the nature of the glass transition beyond mean-field theory. We perform…

无序系统与神经网络 · 物理学 2026-04-20 Prerak Gupta , Auditya Sharma , Bharadwaj Vedula , J. Yeo , M. A. Moore

Evading the Mermin-Wagner-Hohenberg no-go theorem and revisiting with rigor the ideal Bose gas confined in a square box, we explore a discrete phase transition in two spatial dimensions. Through both analytic and numerical methods we verify…

量子气体 · 物理学 2015-01-27 Wonyoung Cho , Sang-Woo Kim , Jeong-Hyuck Park

Intrinsic discrete nature in thermodynamic properties of Fermi gases appears under strongly confined and degenerate conditions. For a rectangular confinement domain, thermodynamic properties of an ideal Fermi gas are expressed in their…

量子气体 · 物理学 2016-02-24 Alhun Aydin , Altug Sisman