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We prove the convergence of a particle method for the approximation of diffusive gradient flows in one dimension. This method relies on the discretisation of the energy via non-overlapping balls centred at the particles and preserves the…

偏微分方程分析 · 数学 2017-06-09 J. A. Carrillo , F. S. Patacchini , P. Sternberg , G. Wolansky

A longstanding question in water research is the possibility that supercooled liquid water can undergo a liquid-liquid phase transition (LLT) into high- and low-density liquids. We used several complementary molecular simulation techniques…

Let $X$ be a regular linear diffusion whose state space is an open interval $E\subseteq\mathbb{R}$. We consider a diffusion $X^*$ which probability law is obtained as a Doob $h$-transform of the law of $X$, where $h$ is a positive harmonic…

概率论 · 数学 2015-01-14 L. Alili , P. Graczyk , T. Zak

This article concerns second-order time discretization of subdiffusion equations with time-dependent diffusion coefficients. High-order differentiability and regularity estimates are established for subdiffusion equations with…

数值分析 · 数学 2020-06-05 Bangti Jin , Buyang Li , Zhi Zhou

Diffusive transport is characterized by the scaling law $(length)^{2}\propto(time)$. In this letter we show that this relationship is significantly altered in curved analogue spacetimes. This circumstance provides an opportunity to tailor…

统计力学 · 物理学 2012-06-21 Matteo Smerlak

By means of a particle model that includes interactions only via the local particle concentration, we show that hyperballistic diffusion may result. This is done by findng the exact solution of the corresponding non-linear diffusion…

统计力学 · 物理学 2020-12-08 Eirik G. Flekkøy , Alex Hansen , Beatrice Baldelli

This paper investigates the behavior of statistical ensembles under iteration map induced by discrete integrable Hamiltonian systems in deterministic case and stochastic case, addressing the problem from two perspectives: the Law of Large…

概率论 · 数学 2025-09-26 Xinyu Liu , Xinze Zhang , Yong Li

The special theory of relativity is constructed demanding the retention of the rectilinear form of a trajectory and invariance of the wave equation under linear transformations of space and time coordinates. The usual approach to relativity…

综合物理 · 物理学 2008-11-20 Valery P. Dmitriyev

We start from the remark that in wave turbulence theory, exemplified by the cubic twodimensional Schr{\"o}dinger equation (NLS) on the real plane, the regularity of the resonant manifold is linked with dispersive properties of the equation…

偏微分方程分析 · 数学 2023-07-06 Erwan Faou , Antoine Mouzard

Score-based diffusion models have demonstrated outstanding empirical performance in machine learning and artificial intelligence, particularly in generating high-quality new samples from complex probability distributions. Improving the…

机器学习 · 统计学 2025-05-30 Yuchen Jiao , Gen Li

Supersymmetry and Lorentz invariance are closely related as both are spacetime symmetries. Terms can be added to Lagrangians that explicitly break either supersymmetry or Lorentz invariance. It is possible to include terms which violate…

高能物理 - 唯象学 · 物理学 2009-11-07 M. S. Berger

We derive the formulae of fluctuating hydrodynamics appropiate to a relativistically consistent divergence type theory, obtaining Landau - Lifshitz fluctuating hydrodynamics as a limiting case.

广义相对论与量子宇宙学 · 物理学 2009-10-30 Esteban Calzetta

In modeling parasitic diseases, it is natural to distinguish hosts according to the number of parasites that they carry, leading to a countably infinite type space. Proving the analogue of the deterministic equations, used in models with…

概率论 · 数学 2009-01-16 A. D. Barbour , M. J. Luczak

We introduce layer systems for proving generalizations of the modularity of confluence for first-order rewrite systems. Layer systems specify how terms can be divided into layers. We establish structural conditions on those systems that…

计算机科学中的逻辑 · 计算机科学 2015-02-10 Bertram Felgenhauer , Aart Middeldorp , Harald Zankl , Vincent van Oostrom

We derive a large deviation principle for random permutations induced by probability measures of the unit square, called permutons. These permutations are called $\mu$-random permutations. We also introduce and study a new general class of…

概率论 · 数学 2023-04-04 Jacopo Borga , Sayan Das , Sumit Mukherjee , Peter Winkler

We analyze single particle coherence and interference in the presence of particle loss and derive an inequality that relates the preservation of coherence, the creation of superposition with the vacuum, and the degree of particle loss. We…

量子物理 · 物理学 2007-05-23 Johan Aberg , Daniel K. L. Oi

We prove a contraction in $L^1$ property for the solutions of a nonlinear reaction--diffusion system whose special cases include intercellular transport as well as reversible chemical reactions. Assuming the existence of stationary…

偏微分方程分析 · 数学 2008-08-05 M. Chipot , D. Hilhorst , D. Kinderlehrer , M. Olech

We propose and demonstrate a photon-efficient optical classifier to overcome the Rayleigh limit in spatial resolution. It utilizes mode-selective sum frequency generation and single-pixel photon detection to resolve closely spaced…

量子物理 · 物理学 2020-10-21 He Zhang , Santosh Kumar , Yu-Ping Huang

We show that if $f$ is locally in $L\log\log L$ then the lacunary spherical means converge almost everywhere. The argument given here is a model case for more general results on singular maximal functions and Radon transforms (see ref. 6).

经典分析与常微分方程 · 数学 2010-03-15 Andreas Seeger , Terence Tao , James Wright

We propose a new finetuning method to provide pre-trained large language models (LMs) the ability to scale test-time compute through the diffusion framework. By increasing the number of diffusion steps, we show our finetuned models achieve…

计算与语言 · 计算机科学 2025-06-04 Edoardo Cetin , Tianyu Zhao , Yujin Tang