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We present predictions for redshift-space peculiar velocity statistics in the Lagrangian and Eulerian formulations of the effective field theory (EFT) of large-scale structure. We compute 2-point pairwise velocity statistics up to the…

宇宙学与河外天体物理 · 物理学 2026-01-07 Shi-Fan Chen , Cullan Howlett , Yan Lai , Fei Qin

This letter studies the Euler-alignment system with weakly singular influence functions by introducing a novel technique to bound the density. Instead of resorting to a nonlinear maximum principle used in [C. Tan, Nonlinearity, 33:…

偏微分方程分析 · 数学 2021-10-22 Manas Bhatnagar , Hailiang Liu

We study regularity of a hydrodynamic singular model of collective behavior introduced in \cite{ST1}. In this note we address the question of global well-posedness in multi-dimensional settings. It is shown that any initial data $(u,\rho)$…

偏微分方程分析 · 数学 2020-01-08 Roman Shvydkoy

We consider the Coulomb drag between two two-dimensional electron layers at filling factor \nu = 1/2 each, using a strong coupling approach within the composite fermion picture. Due to an attractive interlayer interaction, composite…

介观与纳米尺度物理 · 物理学 2009-10-31 Iddo Ussishkin , Ady Stern

We demonstrate how to describe in an unified way early and late-time acceleration in the context of mimetic $F(R)$ gravity. As we show, an exponential $F(R)$ gravity model has appealing features, with regard to unification, and we perform…

广义相对论与量子宇宙学 · 物理学 2016-10-06 V. K. Oikonomou

Using Brownian vibrators, we conducted a study on the structures and dynamics of quasi-2d granular materials with packing fractions ($\phi$) ranging from 0.111 to 0.832. Our observations revealed a remarkable large-scale collective motion…

软凝聚态物质 · 物理学 2023-08-09 Yangrui Chen , Jie Zhang

We study the decay of convolution powers of probability measures without second moment but satisfying some weaker finite moment condition. For any locally compact unimodular group G and any positive function $\rho:G \rightarrow…

概率论 · 数学 2012-10-30 Alexander Bendikov , Laurent Saloff-Coste

We study the one-dimensional active Ising model in which aligning particles undergo diffusion biased by the signs of their spins. The phase diagram obtained varying the density of particles, their hopping rate and the temperature…

统计力学 · 物理学 2024-10-17 Brieuc Benvegnen , Hugues Chaté , Pavel Krapivsky , Julien Tailleur , Alexandre Solon

The model of Composite Fermions for describing interacting electrons in two dimensions in the presence of a magnetic field is described. In this model, charged Fermions are combined with an even number of magnetic flux quanta in such a way…

介观与纳米尺度物理 · 物理学 2007-05-23 B. Kramer , N. Magnoli , E. Mariani , M. Merlo , F. Napoli , M. Sassetti

The Heisenberg dynamics of the energy, momentum, and particle densities for fermions with short-range pair interactions is shown to converge to the compressible Euler equations in the hydrodynamic limit. The pressure function is given by…

数学物理 · 物理学 2007-05-23 Bruno Nachtergaele , Horng-Tzer Yau

We provide a new existence result for weak solutions to the one-dimensional Euler equations with a maximal density constraint, corresponding to a unilateral constraint on the density. Such models arise in the description of congestion…

偏微分方程分析 · 数学 2026-04-06 Charlotte Perrin

Recent variational studies have demonstrated that the strongly correlated ground states of the fractional quantum Hall (FQH) effect can be captured using machine learning approaches starting from no prior knowledge of the underlying…

强关联电子 · 物理学 2025-12-02 Mytraya Gattu

Sampling molecular conformations from the Boltzmann distribution is essential for computational chemistry, but iterative diffusion methods are prohibitively slow. Drifting Models offer one-step generation, yet their equilibrium matches the…

化学物理 · 物理学 2026-03-09 Pipi Hu

We devise an iterative scheme for numerically calculating dynamical two-point correlation functions in integrable many-body systems, in the Eulerian scaling limit. Expressions for these were originally derived in Ref. [1] by combining the…

统计力学 · 物理学 2021-01-01 Frederik S. Møller , Gabriele Perfetto , Benjamin Doyon , Jörg Schmiedmayer

In this chapter, we present the Cucker-Smale type flocking models, and discuss their mathematical structures and flocking theorems in terms of coupling strength, interaction topologies and initial data. In 2007, two mathematicians Felipe…

偏微分方程分析 · 数学 2016-04-19 Young-Pil Choi , Seung-Yeal Ha , Zhuchun Li

We study energy correlators and other event shapes in states created by operators with large global $U(1)$ charge $Q$ in Conformal Field Theories. Focusing on theories whose large charge sector is described by the superfluid Effective Field…

高能物理 - 理论 · 物理学 2025-03-31 Gabriel Cuomo , Eren Firat , Filippo Nardi , Lorenzo Ricci

We prove existence and uniqueness of strong solutions to the Cucker--Smale flocking model coupled with an incompressible viscous non-Newtonian fluid, with the stress tensor of a power--law structure for $p\geq\frac{11}{5}$. The coupling is…

偏微分方程分析 · 数学 2017-02-24 Piotr B. Mucha , Jan Peszek , Milan Pokorny

In this letter we consider quantum phases and the phase diagram of a Fermi Hubbard model under periodic driving that has been realized in recent cold atom experiments, in particular, when the driving frequency is resonant with the…

量子气体 · 物理学 2019-05-08 Ning Sun , Pengfei Zhang , Hui Zhai

In this paper we are concerned with the asymptotic behavior of nonautonomous fractional approximations of oscillon equation $$ u_{tt}-\mu(t)\Delta u+\omega(t)u_t=f(u),\ x\in\Omega,\ t\in\mathbb{R}, $$ subject to Dirichlet boundary condition…

偏微分方程分析 · 数学 2020-06-08 Flank D. M. Bezerra , Rodiak N. Figueroa-López , Marcelo J. D. Nascimento

We study the mean-field limit for a class of agent-based models describing flocking with nonlinear velocity alignment. Each agent interacts through a communication protocol $\phi$ and a non-linear coupling of velocities given by the power…

偏微分方程分析 · 数学 2026-01-01 Vinh Nguyen , Roman Shvydkoy , Changhui Tan