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We derive generalized Langevin equations for the translational and rotational motion of a heated Brownian particle from the fluctuating hydrodynamics of its non-isothermal solvent. The temperature gradient around the particle couples to the…

统计力学 · 物理学 2014-10-01 G. Falasco , M. V. Gnann , D. Rings , K. Kroy

The standard Caldeira-Leggett model addresses the problem of Brownian motion in a thermal equilibrium environment. Here, we look for generalizations of the Caldeira-Leggett model to account for thermal gradients in the environment. We…

量子物理 · 物理学 2026-03-31 Daniel Valente , Maurício Matos , Thiago Werlang

We use the path integral approach to a two-dimensional noncommutative harmonic oscillator to derive the partition function of the system at finite temperature. It is shown that the result based on the Lagrangian formulation of the problem,…

高能物理 - 理论 · 物理学 2012-08-02 A. Jahan

In the frames of classical mechanics the generalized Langevin equation is derived for an arbitrary mechanical subsystem coupled to the harmonic bath of a solid. A time-acting temperature operator is introduced for the quantum Klein-Kramers…

量子物理 · 物理学 2021-05-17 Roumen Tsekov

We consider solutions of the linear heat equation in $\mathbb{R}^N$ with isolated singularities. It is assumed that the position of a singular point depends on time and is H\"older continuous with the exponent $\alpha \in (0,1)$. We show…

偏微分方程分析 · 数学 2020-12-09 Mikihiro Fujii , Izumi Okada , Eiji Yanagida

We introduce the heat equation relative to a positive dd-bar-closed current and apply it to the invariant currents associated with Riemann surface laminations possibly with singularities. The main examples are holomorphic foliations by…

动力系统 · 数学 2010-04-23 Tien-Cuong Dinh , Viet-Anh Nguyen , Nessim Sibony

Motivated by recent developments on solvable directed polymer models, we define a 'multi-layer' extension of the stochastic heat equation involving non-intersecting Brownian motions.

概率论 · 数学 2021-03-30 Neil O'Connell , Jon Warren

In the preceding paper, introducing a cutoff, the present author gave a proof of the statement that the transition to a superconducting state is a second-order phase transition in the BCS-Bogoliubov model of superconductivity on the basis…

数学物理 · 物理学 2020-06-29 Shuji Watanabe

We report the exact fundamental solution for Kramers equation associated to a brownian gas of charged particles, under the influence of homogeneous (spatially uniform) otherwise arbitrary, external mechanical, electrical and magnetic…

其他凝聚态物理 · 物理学 2009-11-10 Tania P. Simoes , Roberto E. Lagos

We consider heat conduction across an ordered oscillator chain with harmonic interparticle interactions and also onsite harmonic potentials. The onsite spring constant is the same for all sites excepting the boundary sites. The chain is…

统计力学 · 物理学 2009-11-13 Dibyendu Roy , Abhishek Dhar

We obtain a non-Markovian quantum master equation directly from the quantization of a non-Markovian Fokker-Planck equation describing the Brownian motion of a particle immersed in a generic environment (e.g. a non-thermal fluid). As far as…

统计力学 · 物理学 2011-03-25 A. O. Bolivar

We consider a Stratonovich heat equation in $(0,1)$ with a nonlinear multiplicative noise driven by a trace-class Wiener process. First, the equation is shown to have a unique mild solution. Secondly, convolutional rough paths techniques…

概率论 · 数学 2013-01-22 Aurélien Deya , Maria Jolis , Lluís Quer-Sardanyons

Recently it was obtained in [Tarzia, Thermal Sci. 21A (2017) 1-11] for the classical two-phase Lam\'e-Clapeyron-Stefan problem an equivalence between the temperature and convective boundary conditions at the fixed face under a certain…

数学物理 · 物理学 2018-10-17 Julieta Bollati , Domingo A. Tarzia

We prove the existence and uniqueness of the mild solution for a nonlinear stochastic heat equation defined on an unbounded spatial domain. The nonlinearity is not assumed to be globally, or even locally, Lipschitz continuous. Instead the…

概率论 · 数学 2021-02-12 Michael Salins

In this work we find a solution to problem of the heat equation which is annihiliated at a cubic boundary $f$. The solution turns out to be the convolution between the fundamental solution of the heat equation and a function $\phi$ which…

综合数学 · 数学 2016-07-28 Gerardo Hernandez-del-Valle

The second law of thermodynamics is a useful and universal tool to derive the generalizations of the Fourier's law. In many cases, only linear relations are considered between the thermodynamic fluxes and forces, i.e., the conduction…

统计力学 · 物理学 2019-12-25 Róbert Kovács , Patrizia Rogolino

In the literature, one can find numerous modifications of Fourier's law from which the first one is called Maxwell-Cattaneo-Vernotte heat equation. Although this model has been known for decades and successfully used to model…

应用物理 · 物理学 2023-08-21 A. J. A. Ramos , A. D. S. Campelo , M. M. Freitas , R. Kovács

Consider the Skorokhod equation in the closed first quadrant: \[ X_t=x_0+ B_t+\int_0^t{\bf v}(X_s)\, dL_s,\] where $B_t$ is standard 2-dimensional Brownian motion, $X_t$ takes values in the quadrant for all $t$, and $L_t$ is a process that…

概率论 · 数学 2024-05-13 Richard F. Bass , Krzysztof Burdzy

We study classical heat conduction in a dissipative open system composed of interacting oscillators. By exactly solving a twisted Fokker-Planck equation which describes the full counting statistics of heat flux flowing through the system,…

统计力学 · 物理学 2012-10-30 Jie Ren , Sha Liu , Baowen Li

The paper concerns classical solution of path-dependent partial differential equations (PPDEs) with coefficients depending on both variables of path and path-valued measure, which are crucial to understanding large-scale mean-field…

概率论 · 数学 2024-07-26 Shanjian Tang , Huilin Zhang