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Dark matter comprised of axion-like particles (ALPs) generated by the realignment mechanism in the post-inflationary scenario leads to primordial isocurvature fluctuations. The power spectrum of these fluctuations is flat for small wave…

宇宙学与河外天体物理 · 物理学 2020-12-09 Martin Feix , Steffen Hagstotz , Andreas Pargner , Robert Reischke , Bjoern Malte Schaefer , Thomas Schwetz

We prove two theorems related to the Central Limit Theorem (CLT) for Martin-L\"of Random (MLR) sequences. Martin-L\"of randomness attempts to capture what it means for a sequence of bits to be "truly random". By contrast, CLTs do not make…

概率论 · 数学 2022-01-31 Anton Vuerinckx , Yves Moreau

Control-affine Extremum Seeking Control (ESC) systems have been increasingly studied and applied in the last decade. In a recent effort, many control-affine ESC structures have been generalized in a unifying class and their stability was…

最优化与控制 · 数学 2023-05-02 Sameer Pokhrel , Sameh A. Eisa

This paper deals with subspace estimation in the small sample size regime, where the number of samples is comparable in magnitude with the observation dimension. The traditional estimators, mostly based on the sample correlation matrix, are…

统计方法学 · 统计学 2015-06-19 Pascal Vallet , Xavier Mestre , Philippe Loubaton

In this paper we study existence of Normally Hyperbolic Invariant Laminations (NHIL) for a nearly integrable system given by the product of the pendulum and the rotator perturbed with a small coupling between the two. This example was…

动力系统 · 数学 2015-11-17 Vadim Kaloshin , Jianlu Zhang , Ke Zhang

In this article, we consider the Parabolic Anderson Model with constant initial condition, driven by a space-time homogeneous Gaussian noise, with general covariance function in time and spatial spectral measure satisfying Dalang's…

概率论 · 数学 2018-07-17 Raluca M. Balan , Lluís Quer-Sardanyons , Jian Song

In this paper, we establish the central limit theorem (CLT) for the linear spectral statistics (LSS) of sample correlation matrix $R$, constructed from a $p\times n$ data matrix $X$ with independent and identically distributed (i.i.d.)…

概率论 · 数学 2024-09-20 Yanpeng Li , Guangming Pan , Jiahui Xie , Wang Zhou

We study the Gaussian noise stability of subsets A of Euclidean space satisfying A=-A. It is shown that an interval centered at the origin, or its complement, maximizes noise stability for small correlation, among symmetric subsets of the…

概率论 · 数学 2016-09-05 Steven Heilman

We consider canonical determinantal random point processes with N particles on a compact Riemann surface X defined with respect to the constant curvature metric. In the higher genus (hyperbolic) cases these point processes may be defined in…

数学物理 · 物理学 2011-08-18 Robert J. Berman

In this paper, we consider the dynamics of integrable stochastic Hamiltonian systems. Utilizing the Nagaev-Guivarc'h method, we obtain several generalized results of the central limit theorem. Making use of this technique and the Birkhoff…

动力系统 · 数学 2024-04-04 Chen Wang , Yong Li

Here we obtain explicit formulae for bounds on the complex electrical polarizability at a given frequency of an inclusion with known volume that follow directly from the quasistatic bounds of Bergman and Milton on the effective complex…

数学物理 · 物理学 2017-09-27 Graeme W. Milton

Localization and delocalization of quantum diffusion in time-continuous one-dimensional Anderson model perturbed by the quasi-periodic harmonic oscillations of $M$ colors is investigated systematically, which has been partly reported by the…

无序系统与神经网络 · 物理学 2022-05-11 Hiroaki S. Yamada , Kensuke S. Ikeda

We prove annealed central limit theorems for finite pattern counts in the measurement record of discrete-time quantum trajectories generated by repeated measurements in a disordered environment. Under summable mixing assumptions on the…

数学物理 · 物理学 2026-04-01 Lubashan Pathirana

In this article, we establish the well-posedness theory for renormalized entropy solutions of a degenerate parabolic-hyperbolic PDE perturbed by a multiplicative Levy noise with general L1-data on the unbounded domain. By using a suitable…

偏微分方程分析 · 数学 2024-08-27 Soumya Ranjan Behera , Ananta K Majee

We present and constrain a cosmological model where the only component is a pressureless fluid with bulk viscosity as an explanation for the present accelerated expansion of the universe. We study the particular model of a bulk viscosity…

广义相对论与量子宇宙学 · 物理学 2009-01-05 Arturo Avelino , Ulises Nucamendi

We consider a model initial- and Dirichlet boundary- value problem for a fourth-order linear stochastic parabolic equation, in one space dimension, forced by an additive space-time white noise. First, we approximate its solution by the…

数值分析 · 数学 2016-07-19 Georgios E. Zouraris

We study the $L^2$ spectral gap of a large system of strongly coupled diffusions on unbounded state space and subject to a double-well potential. This system can be seen as a spatially discrete approximation of the stochastic Allen-Cahn…

谱理论 · 数学 2015-06-16 Giacomo Di Gesù , Dorian Le Peutrec

In [2] it has been proved that a linear Hamiltonian lattice field perturbed by a conservative stochastic noise belongs to the 3/2-L\'evy/Diffusive universality class in the nonlinear fluctuating theory terminology [15], i.e. energy…

数学物理 · 物理学 2018-08-01 Cédric Bernardin , Patricia Gonçalves , Milton Jara , Marielle Simon

We prove the existence and uniqueness of global, probabilistically strong, analytically strong solutions of the 2D Stochastic Navier-Stokes Equation under Navier boundary conditions. The choice of noise includes a large class of additive,…

概率论 · 数学 2023-08-17 Daniel Goodair

Quasi-linear hyperbolic systems with source terms introduce significant computational challenges due to the presence of a stiff source term. To address this, a finite volume Nessyahu-Tadmor (NT) central numerical scheme is explored and…

数值分析 · 数学 2026-03-30 Sudipta Sahu , Emanuele Macca , Rathan Samala
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