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A unified formulation of the density functional theory is constructed on the foundations of entropic inference in both the classical and the quantum regimes. The theory is introduced as an application of entropic inference for inhomogeneous…

统计力学 · 物理学 2021-12-20 Ahmad Yousefi

A restricted form of Landauer's Principle, independent of computational considerations, is shown to hold for thermal systems by reference to the joint entropy associated with conjugate observables. It is shown that the source of the…

量子物理 · 物理学 2024-01-15 R. E. Kastner , Andreas Schlatter

Energy conservations are studied for inhomogeneous incompressible and compressible Euler equations with general pressure law in a torus or a bounded domain. We provide sufficient conditions for a weak solution to conserve the energy. By…

偏微分方程分析 · 数学 2019-09-23 Quoc-Hung Nguyen , Phuoc-Tai Nguyen , Bao Quoc Tang

A compactness framework is established for approximate solutions to subsonic-sonic flows governed by the steady full Euler equations for compressible fluids in arbitrary dimension. The existing compactness frameworks for the two-dimensional…

偏微分方程分析 · 数学 2015-07-28 Gui-Qiang G. Chen , Fei-Min Huang , Tian-Yi Wang

We consider variational problem related to entropy maximization in the two-dimensional Euler equations, in order to investigate the long-time dynamics of solutions with bounded vorticity. Using variations on the classical min-max principle…

偏微分方程分析 · 数学 2026-03-18 Michele Coti Zelati , Matias G. Delgadino

We consider a sequence of approximate solutions to the compressible Euler system admitting uniform energy bounds and/or satisfying the relevant field equations modulo an error vanishing in the asymptotic limit. We show that such a sequence…

偏微分方程分析 · 数学 2020-01-03 Eduard Feireisl , Martina Hofmanová

We formulate new admissibility criteria for initial value problems motivated by the least action principle. These are applied to a two-dimensional Riemann initial value problem for the isentropic compressible Euler fluid flow. It is shown…

偏微分方程分析 · 数学 2026-01-14 Heiko Gimperlein , Michael Grinfeld , Robin J. Knops , Marshall Slemrod

A principle of maximum entropy is proposed in the context of viscous incompressible flow in Eulerian coordinates. The relative entropy functional, defined over the space of $L^2$ divergence-free velocity fields, is maximized relative to…

流体动力学 · 物理学 2024-02-23 Gui-Qiang G. Chen , James Glimm , Hamid Said

We show that a specific skew-symmetric form of nonlinear hyperbolic problems leads to energy and entropy bounds. Next, we exemplify by considering the compressible Euler equations in primitive variables, transform them to skew-symmetric…

偏微分方程分析 · 数学 2025-02-18 Jan Nordström

This study proposes a novel spatial discretization procedure for the compressible Euler equations that guarantees entropy conservation at a discrete level for thermally perfect gases. The procedure is based on a locally conservative…

流体动力学 · 物理学 2026-03-11 Alessandro Aiello , Carlo De Michele , Gennaro Coppola

This paper is concerned with the existence of compactly supported admissible solutions to the Cauchy problem for the isentropic compressible Euler equations. In more than one space dimension, convex integration techniques developed by De…

偏微分方程分析 · 数学 2020-03-31 Ibrokhimbek Akramov , Emil Wiedemann

In this paper, we prove a new type of energy estimates for the compressible Euler's equation with free boundary, with a boundary part and an interior part. These can be thought of as a generalization of the energies in Christodoulou and…

偏微分方程分析 · 数学 2017-04-17 Hans Lindblad , Chenyun Luo

We consider solutions to the Cauchy problem for the incompressible Euler equations satisfying several additional requirements, like the global and local energy inequalities. Using some techniques introduced in an earlier paper we show that,…

偏微分方程分析 · 数学 2015-05-13 Camillo De Lellis , László Székelyhidi

In 2004, Taubes introduced the space of minimal hyperbolic germs with elements consisting of the first and second fundamental form of an equivariant immersed minimal disk in hyperbolic 3-space. Herein, we initiate a further study of this…

微分几何 · 数学 2016-07-13 Andrew Sanders

The question of well- and ill-posedness of entropy admissible solutions to the multi-dimensional systems of conservation laws has been studied recently in the case of isentropic Euler equations. In this context special initial data were…

偏微分方程分析 · 数学 2020-06-03 Hind Al Baba , Christian Klingenberg , Ondrej Kreml , Vaclav Macha , Simon Markfelder

This paper is concerned with the approximation of the compressible Euler equations supplemented with an arbitrary or tabulated equation of state. The proposed approximation technique is robust, formally second-order accurate in space,…

数值分析 · 数学 2023-02-22 Bennett Clayton , Jean-Luc Guermond , Matthias Maier , Bojan Popov , Eric J. Tovar

The motion of a compressible inviscid radiative flow can be described by the radiative Euler equations, which consists of the Euler system coupled with a Poisson equation for the radiative heat flux through the energy equation. Although…

偏微分方程分析 · 数学 2024-09-24 Huijiang Zhao , Boran Zhu

We show that any dissipative (measure-valued) solution of the compressible Euler system that complies with Dafermos' criterion of maximal dissipation is necessarily an admissible weak solution. In addition, we propose a simple, at most two…

偏微分方程分析 · 数学 2025-01-23 Eduard Feireisl , Ansgar Jüngel , Mária Lukáčová-Medvid'ová

When constructing models of the world, we aim for optimal compressions: models that include as few details as possible while remaining as accurate as possible. But which details -- or features measured in data -- should we choose to include…

定量方法 · 定量生物学 2025-05-06 David P. Carcamo , Nicholas J. Weaver , Purushottam D. Dixit , Christopher W. Lynn

We analyze the relativistic Euler equations of conservation laws of baryon number and momentum with a general pressure law. The existence of global-in-time bounded entropy solutions for the system is established by developing a compensated…

偏微分方程分析 · 数学 2022-05-11 Gui-Qiang G. Chen , Matthew R. I. Schrecker