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Finite-dimensional state-space representations of unsteady aerodynamics implicitly assume a system with fading memory. However, the impulse response of the two-dimensional inviscid (Euler) equations is characterized by an asymptotic…

流体动力学 · 物理学 2026-04-21 Sarasija Sudharsan

The Markov dynamics of interlaced particle arrays, introduced by A. Borodin and P. Ferrari in arXiv:0811.0682, is a classical example of (2+1)-dimensional random growth model belonging to the so-called Anisotropic KPZ universality class. In…

概率论 · 数学 2022-03-01 Vincent Lerouvillois , Fabio Lucio Toninelli

Large scale, dynamical simulations have been performed for the two dimensional octahedron model, describing the Kardar-Parisi-Zhang (KPZ) for nonlinear, or the Edwards-Wilkinson (EW) class for linear surface growth. The autocorrelation…

统计力学 · 物理学 2017-12-19 Jeffrey Kelling , Géza Ódor , Sibylle Gemming

We consider continuous and discrete (1+1)-dimensional wetting models which undergo a localization/delocalization phase transition. Using a simple approach based on Renewal Theory we determine the precise asymptotic behavior of the partition…

概率论 · 数学 2007-05-23 Francesco Caravenna , Giambattista Giacomin , Lorenzo Zambotti

The theory of growth kinetics developed previously is extended to the asymmetric case of off-critical quenches for systems with a conserved scalar order parameter. In this instance the new parameter $M$, the average global value of the…

凝聚态物理 · 物理学 2009-10-22 G. F. Mazenko , R. A. Wickham

Heat flows in 1+1 dimensional stochastic environment converge after scaling to the random geometry described by the directed landscape. In this first part, we show that the O'Connell-Yor polymer and the KPZ equation converge to the KPZ…

概率论 · 数学 2020-08-18 Balint Virag

We study the rate of growth of sharp fronts of the Quasi-geostrophic equation and 2D incompressible Euler equations.. The development of sharp fronts are due to a mechanism that piles up level sets very fast. Under a semi-uniform collapse,…

偏微分方程分析 · 数学 2007-05-23 Diego Cordoba , Charles Fefferman

We compute the limit of the moments of the partition function $Z_{N}^{\beta_N} $ of the directed polymer in dimension $d=2$ in the subcritical regime, i.e. when the inverse temperature is scaled as $\beta_N \sim \hat{\beta}…

概率论 · 数学 2023-08-02 Dimitris Lygkonis , Nikos Zygouras

We study thermodynamics of strongly coupled lattice QCD with $two$ colors of staggered fermions in $(2+1)$ dimensions. The partition function of this model can be written elegantly as a statistical mechanics of dimers and baryonloops. The…

高能物理 - 格点 · 物理学 2009-11-11 Shailesh Chandrasekharan

We consider the limit behavior of partition function of directed polymers in random environment represented by linear model instead of a family of i.i.d.variables in $1+1$ dimensions. Under the assumption that the correlation decays…

概率论 · 数学 2019-12-19 Guanglin Rang

This is a preliminary announcement of results in the PhD. thesis of the first author concerning the nonlinear stochastic heat equation in the spatial domain $\R$, driven by space-time white noise. A central special case is the parabolic…

概率论 · 数学 2012-10-08 Le Chen , Robert C. Dalang

For quantum spin systems in equilibrium, the dynamic structure factor (DSF) is among the most feature-packed experimental observables. However, from a theory perspective it is often hard to simulate in an unbiased and accurate way,…

强关联电子 · 物理学 2026-02-06 Ruben Burkard , Benedikt Schneider , Björn Sbierski

We consider a flip dynamics for directed (1+d)-dimensional lattice paths with length L. The model can be interpreted as a higher dimensional version of the simple exclusion process, the latter corresponding to the case d=1. We prove that…

概率论 · 数学 2015-04-10 Pietro Caputo , Julien Sohier

Stochastic heavy ball momentum (SHB) is commonly used to train machine learning models, and often provides empirical improvements over stochastic gradient descent. By primarily focusing on strongly-convex quadratics, we aim to better…

最优化与控制 · 数学 2025-06-02 Anh Dang , Reza Babanezhad , Sharan Vaswani

We consider a system of $d$ non-linear stochastic fractional heat equations in spatial dimension $1$ driven by multiplicative $d$-dimensional space-time white noise. We establish a sharp Gaussian-type upper bound on the two-point…

概率论 · 数学 2018-10-15 Robert C. Dalang , Fei Pu

We consider the binormal flow equation, which is a model for the dynamics of vortex filaments in Euler equations. Geometrically it is a flow of curves in three dimensions, explicitly connected to the 1-D Schr\"odinger map with values on the…

偏微分方程分析 · 数学 2021-03-24 Valeria Banica , Luis Vega

Recent empirical and theoretical work has shown that the dynamics of the large eigenvalues of the training loss Hessian have some remarkably robust features across models and datasets in the full batch regime. There is often an early period…

机器学习 · 计算机科学 2025-02-04 Atish Agarwala , Jeffrey Pennington

High-dimensional linear regression under heavy-tailed noise or outlier corruption is challenging, both computationally and statistically. Convex approaches have been proven statistically optimal but suffer from high computational costs,…

统计理论 · 数学 2023-05-11 Yinan Shen , Jingyang Li , Jian-Feng Cai , Dong Xia

The Random First Order Transition Theory (RFOT) predicts that transport proceeds by cooperative movement of particles in domains whose sizes increase as a liquid is compressed above a characteristic volume fraction, $\phi_d$. The rounded…

软凝聚态物质 · 物理学 2024-12-24 Rajsekhar Das , T. R. Kirkpatrick , D. Thirumalai

We study the shear momentum diffusion and related modes of a strongly coupled $(2+1)$-dimensional conformal field theory at finite temperature and chemical potential, using a dual holographic description. We consider a space-time filling…

高能物理 - 理论 · 物理学 2018-07-31 Nikola I. Gushterov