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Polymer self-consistent field theory techniques are used to derive quantum density functional theory without the use of the theorems of density functional theory. Instead, a free energy is obtained from a partition function that is…

化学物理 · 物理学 2022-11-29 Russell B. Thompson

We consider the two-dimensional advection-diffusion equation on a bounded domain subject to either Dirichlet or von Neumann boundary conditions and study both time-independent and time-periodic cases involving Liouville integrable…

流体动力学 · 物理学 2013-09-30 Eugene Dedits , Andrew C. Poje , Tobias Schaefer , Jesenko Vukadinovic

We consider random hermitian matrices in which distant above-diagonal entries are independent but nearby entries may be correlated. We find the limit of the empirical distribution of eigenvalues by combinatorial methods. We also prove that…

概率论 · 数学 2007-10-21 Greg Anderson , Ofer Zeitouni

We investigate traces of powers of random matrices whose distributions are invariant under rotations (with respect to the Hilbert--Schmidt inner product) within a real-linear subspace of the space of $n\times n$ matrices. The matrices we…

概率论 · 数学 2023-11-30 Elizabeth S. Meckes , Mark W. Meckes

We introduce the concept of Randomly Modulated Gaussian Processes as a unifying framework for modeling, analyzing and classifying anomalous diffusion models in heterogeneous media. This formulation incorporates correlations in the…

生物物理 · 物理学 2026-03-16 Yann Lanoiselée , Denis S. Grebenkov , Gianni Pagnini

This paper investigates asymptotic distribution of complex zeros of random polynomials $P_n(z):=\sum_{k=0}^{n}b(k)\xi_k z^k$, as $n\to\infty$, where $b$ is a regularly varying function at infinity with index $\alpha\in \mathbb{R}$ and…

概率论 · 数学 2025-11-18 Zakhar Kabluchko , Boris Khoruzhenko , Alexander Marynych

We compute the distribution of the number of negative eigenvalues (the index) for an ensemble of Gaussian random matrices, by means of the replica method. This calculation has important applications in the context of statistical mechanics…

统计力学 · 物理学 2009-10-31 Andrea Cavagna , Juan P. Garrahan , Irene Giardina

Kolo\u{g}lu, Kopp and Miller compute the limiting spectral distribution of a certain class of real random matrix ensembles, known as $k$-block circulant ensembles, and discover that it is exactly equal to the eigenvalue distribution of an…

概率论 · 数学 2018-04-18 Roger Van Peski

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

In spite of its simplicity, the central limit theorem captures one of the most outstanding phenomena in mathematical physics, that of universality. While this classical result is well understood it is still not very clear what happens to…

无序系统与神经网络 · 物理学 2023-04-19 Ernesto Carro , Luis Benet , Isaac Pérez Castillo

Non-Hermitian singularities are ubiquitous in non-conservative open systems. These singularities are often points of measure zero in the eigenspectrum of the system which make them difficult to access without careful engineering. Despite…

量子物理 · 物理学 2018-05-24 Qi Zhong , Mercedeh Khajavikhan , Demetrios Christodoulides , Ramy El-Ganainy

The earlier times of evolution of a magnetic system contain more information than we can imagine. Capturing correlation matrices G of different time evolutions of a simple testbed spin system, as the Ising model, we analyzed the density of…

统计力学 · 物理学 2022-06-03 Roberto da Silva

Using the standard concepts of free random variables, we show that for a large class of nonhermitean random matrix models, the support of the eigenvalue distribution follows from their hermitean analogs using a conformal transformation. We…

高能物理 - 唯象学 · 物理学 2009-10-28 Romuald A. Janik , Maciej A. Nowak , Gabor Papp , Jochen Wambach , Ismail Zahed

We use an extension of the diagrammatic rules in random matrix theory to evaluate spectral properties of finite and infinite products of large complex matrices and large hermitian matrices. The infinite product case allows us to define a…

数学物理 · 物理学 2015-06-26 Ewa Gudowska-Nowak , Romuald A. Janik , Jerzy Jurkiewicz , Maciej A. Nowak

We propose a technique for calculating and understanding the eigenvalue distribution of sums of random matrices from the known distribution of the summands. The exact problem is formidably hard. One extreme approximation to the true density…

量子物理 · 物理学 2017-10-27 Ramis Movassagh , Alan Edelman

Recent advances in single particle tracking and supercomputing techniques demonstrate the emergence of normal or anomalous, viscoelastic diffusion in conjunction with non-Gaussian distributions in soft, biological, and active matter…

统计力学 · 物理学 2018-01-23 Jakub Ślęzak , Ralf Metzler , Marcin Magdziarz

Understanding the joint dynamics of electron and nuclear spins is central to core concepts in solid-state magnetic resonance - such as spin-lattice relaxation and dynamic nuclear polarization - but a generalization that capitalizes on…

量子物理 · 物理学 2021-06-16 Santiago Bussandri , Pablo R. Zangara , Rodolfo H. Acosta , Carlos A. Meriles

The eigenvalues of an arbitrary quaternionic matrix have a joint probability distribution function first derived by Ginibre. We show that there exists a mapping of this system onto a fermionic field theory and then use this mapping to…

无序系统与神经网络 · 物理学 2009-10-31 M. B. Hastings

We explore the spectra and localization properties of the N-site banded one-dimensional non-Hermitian random matrices that arise naturally in sparse neural networks. Approximately equal numbers of random excitatory and inhibitory…

无序系统与神经网络 · 物理学 2016-04-20 Ariel Amir , Naomichi Hatano , David R. Nelson

The eigenvalue PDF for some well known classes of non-Hermitian random matrices --- the complex Ginibre ensemble for example --- can be interpreted as the Boltzmann factor for one-component plasma systems in two-dimensional domains. We…

数学物理 · 物理学 2016-04-20 Peter J. Forrester