中文
相关论文

相关论文: Matrix elements for the quantum cat map: Fluctuati…

200 篇论文

We review the recent developments in the theory of normal, normal self-dual and general complex random matrices. The distribution and correlations of the eigenvalues at large scales are investigated in the large $N$ limit. The 1/N expansion…

高能物理 - 理论 · 物理学 2007-05-23 A. Zabrodin

We study fluctuation properties of embedded random matrix ensembles of non-interacting particles. For ensemble of two non-interacting particle systems, we find that unlike the spectra of classical random matrices, correlation functions are…

数学物理 · 物理学 2016-06-01 Ravi Prakash , Akhilesh Pandey

Quantum gravity "foam", among its various generic Lorentz non-invariant effects, would cause neutrino mixing. It is shown here that, if the foam is manifested as a nonrenormalizable effect at scale M, the oscillation length generically…

高能物理 - 唯象学 · 物理学 2009-11-07 Ram Brustein , David Eichler , Stefano Foffa

The scaled standard Wigner matrix (symmetric with mean zero, variance one i.i.d. entries), and its limiting eigenvalue distribution, namely the semi-circular distribution, has attracted much attention. The $2k$th moment of the limit equals…

概率论 · 数学 2021-03-18 Arup Bose , Koushik Saha , Arusharka Sen , Priyanka Sen

The goal of this article is to study how much the eigenvalues of large Hermitian random matrices deviate from certain deterministic locations -- or in other words, to investigate optimal rigidity estimates for the eigenvalues. We do this in…

概率论 · 数学 2019-06-05 Tom Claeys , Benjamin Fahs , Gaultier Lambert , Christian Webb

We investigate a one-dimensional S=1/2 antiferromagnetic Heisenberg model coupled to quantum lattice vibration using a quantum Monte Carlo method. We study the ground-state lattice fluctuation where the system shows a characteristic…

统计力学 · 物理学 2009-11-07 Hiroaki Onishi , Seiji Miyashita

We develop the statistical mechanics of the Hopfield model in a transverse field to investigate how quantum fluctuations affect the macroscopic behavior of neural networks. When the number of embedded patterns is finite, the Trotter…

凝聚态物理 · 物理学 2009-10-28 Hidetoshi Nishimori , Yoshihiko Nonomura

The Planck units were originally derived from a dimensional analysis without a deeper understanding of their meaning. It was later believed that these units may provide a link between quantum theory and gravity in a yet to be developed…

综合物理 · 物理学 2015-06-05 M. Tajmar

We study the spectral properties of a class of random matrices where the matrix elements depend exponentially on the distance between uniformly and randomly distributed points. This model arises naturally in various physical contexts, such…

无序系统与神经网络 · 物理学 2015-05-18 Ariel Amir , Yuval Oreg , Yoseph Imry

This article is concerned with statistics of addition spectra for systems of identical charged particles. A classical model is suggested in order to study fluctuations of Coulomb blockade peak spacings in large two-dimensional semiconductor…

介观与纳米尺度物理 · 物理学 2009-10-31 Yshai Avishai , Daniel Berend , Richard Berkovits

Random contractions (sub-unitary random matrices) appear naturally when considering quantized chaotic maps within a general theory of open linear stationary systems with discrete time. We analyze statistical properties of complex…

混沌动力学 · 物理学 2009-10-31 Yan V. Fyodorov , H. -J. Sommmers

Equilibrium statistical ensembles commute with the Hamiltonian and thus carry no coherence in the energy eigenbasis. We develop a framework in which energy fluctuations can retain genuinely quantum-coherent contributions. We foliate state…

量子物理 · 物理学 2026-05-08 Maurizio Fagotti

We introduce a new random matrix model called distance covariance matrix in this paper, whose normalized trace is equivalent to the distance covariance. We first derive a deterministic limit for the eigenvalue distribution of the distance…

统计理论 · 数学 2021-05-18 Weiming Li , Qinwen Wang , Jianfeng Yao

Some recent publications by authors from the University of Maryland analyse the fluctuations of multi-port model parameters in stochastic environments. These authors use random matrix theory (RMT) for estimates concerning eigenfunction…

数学物理 · 物理学 2011-11-10 Bastiaan Michielsen , Francois Issac , Isabelle Junqua , Cecile Fiachetti

We analyze statistical properties of the complex system with conditions which manifests through specific constraints on the column/row sum of the matrix elements. The presence of additional constraints besides symmetry leads to new…

统计力学 · 物理学 2015-10-28 Pragya Shukla , Suchetana Sadhukhan

We study the ensemble of complex symmetric matrices. The ensemble is useful in the study of effect of dissipation on systems with time reversal invariance. We consider the nearest neighbor spacing distribution and spacing ratio to…

量子物理 · 物理学 2019-04-30 Ambuja Bhushan Jaiswal , Ravi Prakash , Akhilesh Pandey

The salient properties of large empirical covariance and correlation matrices are studied for three datasets of size 54, 55 and 330. The covariance is defined as a simple cross product of the returns, with weights that decay logarithmically…

统计金融 · 定量金融 2009-03-10 Gilles Zumbach

A one-parameter random matrix model is proposed for describing the statistics of the local amplitudes and phases of electron eigenfunctions in a mesoscopic quantum dot in an arbitrary magnetic field. Comparison of the statistics obtained…

凝聚态物理 · 物理学 2009-10-28 E. Kanzieper , V. Freilikher

The quantum fluctuation effects in the time-of-flight (TOF) experiment for a condensate released from an optical lattice potential is studied within the truncated Wigner approximation. By investigating both the spatial and momentum density…

量子气体 · 物理学 2010-09-29 Shiang Fang , Ray-Kuang Lee , Daw-Wei Wang

We establish a quantitative version of the Tracy--Widom law for the largest eigenvalue of high dimensional sample covariance matrices. To be precise, we show that the fluctuations of the largest eigenvalue of a sample covariance matrix…

概率论 · 数学 2021-08-21 Kevin Schnelli , Yuanyuan Xu