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Among the fundamental symmetry classes of quantum chaotic systems in Dyson's threefold way, the symplectic class is rarely observed in nature. Characterized by the strongest possible level repulsion in the energy spectrum, the symplectic…

量子气体 · 物理学 2025-12-15 Alex D. Kerin , Barbara Dietz , Joachim Brand

We consider highly heterogeneous random networks with symmetric interactions in the limit of high connectivity. A key feature of this system is that the spectral density of the corresponding ensemble exhibits a divergence within the bulk.…

无序系统与神经网络 · 物理学 2023-11-29 Diego Tapias , Peter Sollich

We investigate the dynamics of electrons in the vicinity of the Anderson transition in $d=3$ dimensions. Using the exact eigenstates from a numerical diagonalization, a number of quantities related to the critical behavior of the diffusion…

凝聚态物理 · 物理学 2007-05-23 Tobias Brandes , Bodo Huckestein , Ludwig Schweitzer

We explore the eigenvalue statistics of a non-Hermitian version of the Su-Schrieffer-Heeger model, with imaginary on-site potentials and randomly distributed hopping terms. We find that owing to the structure of the Hamiltonian, eigenvalues…

无序系统与神经网络 · 物理学 2025-01-10 Ken Mochizuki , Naomichi Hatano , Joshua Feinberg , Hideaki Obuse

The random matrix ensembles are applied to the quantum chaotic systems. The quantum systems are studied using the finite dimensional real, complex and quaternion Hilbert spaces of the eigenfunctions. The linear operators describing the…

统计力学 · 物理学 2007-05-23 Maciej M. Duras

We study the characteristic polynomials of both the Gaussian Orthogonal and Symplectic Ensembles. We show that for both ensembles, powers of the absolute value of the characteristic polynomials converge in law to Gaussian multiplicative…

概率论 · 数学 2022-10-28 Pax Kivimae

In this article the statistical properties of symmetrical random matrices whose elements are drawn from a q-parametrized non-extensive statistics power-law distribution are investigated. In the limit as q->1 the well known Gaussian…

统计力学 · 物理学 2007-05-23 John Evans , Fredrick Michael

This paper considers random matrices distributed according to Haar measure in different classical compact groups. Utilizing the determinantal point structures of their nontrivial eigenangles, with respect to the $L_1$-Wasserstein distance,…

概率论 · 数学 2026-02-19 Mengchun Cai

We propose a one-dimensional nonintegrable spin model with local interactions that covers Dyson's three symmetry classes (classes A, AI, and AII) depending on the values of parameters. We show that the nearest-neighbor spacing distribution…

统计力学 · 物理学 2019-04-17 Ryusuke Hamazaki , Masahito Ueda

We consider generic optimal Bayesian inference, namely, models of signal reconstruction where the posterior distribution and all hyperparameters are known. Under a standard assumption on the concentration of the free energy, we show how…

概率论 · 数学 2022-07-19 Jean Barbier , Dmitry Panchenko

We argue that the spectrum of the QCD Dirac operator near zero virtuality can be described by random matrix theory. As in the case of classical random matrix ensembles of Dyson we have three distinct classes: the chiral orthogonal ensemble…

高能物理 - 理论 · 物理学 2011-07-18 Jacobus Verbaarschot

We study spectral densities for systems on lattices, which, at a phase transition display, power-law spatial correlations. Constructing the spatial correlation matrix we prove that its eigenvalue density shows a power law that can be…

数学物理 · 物理学 2014-11-24 Vinayak , T. Prosen , B. Buca , T. H. Seligman

In an absorptive system the Wigner reaction $K-$matrix (directly related to the impedance matrix in acoustic or electromagnetic wave scattering) is non-selfadjoint, hence its eigenvalues are complex. The most interesting regime arises when…

无序系统与神经网络 · 物理学 2023-08-11 Yan V. Fyodorov

Consider the ensemble of real symmetric Toeplitz matrices, each independent entry an i.i.d. random variable chosen from a fixed probability distribution p of mean 0, variance 1, and finite higher moments. Previous investigations showed that…

概率论 · 数学 2010-11-16 Adam Massey , Steven J. Miller , John Sinsheimer

Analytic and numerical results for quasiperiodic tight-binding models are reviewed, with emphasis on two and three-dimensional models which so far are beyond a mathematically rigorous treatment. In particular, we consider energy spectra of…

无序系统与神经网络 · 物理学 2007-05-23 Uwe Grimm , Michael Schreiber

We study the evolution of the distribution of eigenvalues of $N\times N$ matrix ensembles subject to a change of variances of its matrix elements. Our results indicate that the evolution of the probability density is governed by a Fokker-…

统计力学 · 物理学 2007-05-23 Pragya Shukla

Critical systems have always intrigued physicists and precipitated the development of new techniques. Recently, there has been renewed interest in the information contained in their classical configurations, whose computation do not require…

统计力学 · 物理学 2017-01-04 Ching Hua Lee , Dai Ozaki , Hiroaki Matsueda

We numerically investigate the statistical properties of Wigner delay time in Anderson disordered 1D, 2D and quantum dot (QD) systems. The distribution of proper delay time for each conducting channel is found to be universal in 2D and QD…

无序系统与神经网络 · 物理学 2015-05-27 Fuming Xu , Jian Wang

Random matrix ensembles are introduced that respect the local tensor structure of Hamiltonians describing a chain of $n$ distinguishable spin-half particles with nearest-neighbour interactions. We prove a central limit theorem for the…

数学物理 · 物理学 2017-06-19 J. P. Keating , N. Linden , H. J. Wells

The random matrix ensembles (RME), especially Gaussian RME and Ginibre RME, are applied to nuclear systems, molecular systems, and two-dimensional electron systems (Wigner-Dyson electrostatic analogy). Measures of quantum chaos and quantum…

统计力学 · 物理学 2007-05-23 Maciej M. Duras