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We study the statistical mechanics of the self-gravitating gas at thermal equilibrium with two kinds of particles. We start from the partition function in the canonical ensemble which we express as a functional integral over the densities…

天体物理学 · 物理学 2009-11-07 H. J. de Vega , J. A. Siebert

Quantum mechanics owes much of its extraordinary success to a Hilbertian program of mathematical formalization. Yet, the formalism remains poorly aligned with the practical limitations of computations in finite dimensions and under finite…

量子物理 · 物理学 2026-04-15 Timothy Stroschein , Markus Reiher

We demonstrate the equilibration of isolated macroscopic quantum systems, prepared in non-equilibrium mixed states with significant population of many energy levels, and observed by instruments with a reasonably bound working range compared…

统计力学 · 物理学 2009-11-13 Peter Reimann

We can, and should, do statistical inference on simulation models by adjusting the parameters in the simulation so that the values of {\em randomly chosen} functions of the simulation output match the values of those same functions…

统计方法学 · 统计学 2021-11-18 Cosma Rohilla Shalizi

The requirement that physical phenomena associated with gravitational collapse should be duly reconciled with the postulates of quantum mechanics implies that at a Planckian scale our world is not 3+1 dimensional. Rather, the observable…

广义相对论与量子宇宙学 · 物理学 2009-03-21 G. 't Hooft

In classical density (or density-functional) estimation, it is standard to assume that the underlying distribution has a density with respect to the Lebesgue measure. However, when the data distribution is a mixture of continuous and…

统计方法学 · 统计学 2025-08-05 Aytijhya Saha , Aaditya Ramdas

Volume estimates of metric balls in manifolds find diverse applications in information and coding theory. In this paper, some new results for the volume of a metric ball in unitary group are derived via various tools from random matrix…

信息论 · 计算机科学 2015-06-25 Lu Wei , Renaud-Alexandre Pitaval , Jukka Corander , Olav Tirkkonen

Fundamental Measure Theory (FMT) is a successful and versatile approach for describing the properties of the hard-sphere fluid and hard-sphere mixtures within the framework of classical density functional theory (DFT). Lutsko [Phys. Rev. E…

软凝聚态物质 · 物理学 2024-09-04 Melih Gül , Roland Roth , Robert Evans

Density Functional Theory (DFT) is one of the most widely used methods for "ab initio" calculations of the structure of atoms, molecules, crystals, surfaces, and their interactions. Unfortunately, the customary introduction to DFT is often…

物理教育 · 物理学 2010-12-07 Nathan Argaman , Guy Makov

One observes that a considerable level of confusion remains about some of those aspects of irreversibility, entropy generation and `the arrow of time' which actually are well understood. This demands that great care must be taken in any…

数学物理 · 物理学 2008-11-14 Thomas Fischbacher

A functional calculus on the space of (generalized) connections was recently introduced without any reference to a background metric. It is used to continue the exploration of the quantum Riemannian geometry. Operators corresponding to…

广义相对论与量子宇宙学 · 物理学 2007-05-23 Abhay Ashtekar , Jerzy Lewandowski

The asymptotic law for the expected nodal volume of random non-Gaussian monochromatic band-limited functions is determined in vast generality. Our methods combine microlocal analytic techniques and modern probability theory. A particularly…

概率论 · 数学 2021-09-09 Zakhar Kabluchko , Andrea Sartori , Igor Wigman

We derive the finite-volume correction to the binding energy of an N-particle quantum bound state in a cubic periodic volume. Our results are applicable to bound states with arbitrary composition and total angular momentum, and in any…

高能物理 - 格点 · 物理学 2018-02-02 Sebastian König , Dean Lee

Systematic generalization remains challenging for current language models, which are known to be both sensitive to semantically similar permutations of the input and to struggle with known concepts presented in novel contexts. Although…

计算与语言 · 计算机科学 2025-05-28 Sondre Wold , Lucas Georges Gabriel Charpentier , Étienne Simon

We analyze here in details the probability to find a given number of particles in a finite volume inside a normal or superfluid finite system. This probability, also known as counting statistics, is obtained using projection operator…

核理论 · 物理学 2020-01-22 Denis Lacroix , Sakir Ayik

We study the statistical behavior of entanglement in quantum bipartite systems over fermionic Gaussian states as measured by von Neumann entropy and entanglement capacity. The focus is on the variance of von Neumann entropy and the mean…

数学物理 · 物理学 2022-02-16 Youyi Huang , Lu Wei

Including finite-temperature effects from the electronic degrees of freedom in electronic structure calculations of semiconductors and metals is desired; however, in practice it remains exceedingly difficult when using zero-temperature…

化学物理 · 物理学 2016-11-24 Alicia Rae Welden , Alexander A. Rusakov , Dominika Zgid

I discuss the statistical mechanics of gravitating systems and in particular its cosmological implications, and argue that many conventional views on this subject in the foundations of statistical mechanics embody significant confusion; I…

统计力学 · 物理学 2011-11-10 David Wallace

Dynamical systems often contain oscillatory forces or depend on periodic potentials. Time or space periodicity is reflected in the properties of these systems through a dependence on the parameters of their periodic terms. In this paper we…

It is widely believed that the underlying reality behind statistical mechanics is a deterministic and unitary time evolution of a many-particle wave function, even though this is in conflict with the irreversible, stochastic nature of…

统计力学 · 物理学 2017-05-16 Barbara Drossel