On the surprising effectiveness of a simple matrix exponential derivative approximation, with application to global SARS-CoV-2

G Didier, NE Glatt-Holtz, AJ Holbrook… - Proceedings of the …, 2024 - National Acad Sciences
The continuous-time Markov chain (CTMC) is the mathematical workhorse of evolutionary
biology. Learning CTMC model parameters using modern, gradient-based methods requires …

Random lindblad dynamics

T Can - Journal of Physics A: Mathematical and Theoretical, 2019 - iopscience.iop.org
We study the mixing behavior of random Lindblad generators with no symmetries, using the
dynamical map or propagator of the dissipative evolution. In particular, we determine the …

Random generators of Markovian evolution: A quantum-classical transition by superdecoherence

W Tarnowski, I Yusipov, T Laptyeva, S Denisov… - Physical Review E, 2021 - APS
Continuous-time Markovian evolution appears to be manifestly different in classical and
quantum worlds. We consider ensembles of random generators of N-dimensional Markovian …

Wegner estimate and upper bound on the eigenvalue condition number of non‐Hermitian random matrices

L Erdős, HC Ji - Communications on Pure and Applied …, 2024 - Wiley Online Library
Abstract We consider N× NN*N non‐Hermitian random matrices of the form X+ A X+A,
where AA is a general deterministic matrix and NX NX consists of independent entries with …

[图书][B] Smart grid using big data analytics: a random matrix theory approach

RC Qiu, P Antonik - 2017 - books.google.com
This book is aimed at students in communications and signal processing who want to extend
their skills in the energy area. It describes power systems and why these backgrounds are …

Low rank perturbations of large elliptic random matrices

S O'Rourke, D Renfrew - 2014 - projecteuclid.org
We study the asymptotic behavior of outliers in the spectrum of bounded rank perturbations
of large random matrices. In particular, we consider perturbations of elliptic random matrices …

Brown measure of the sum of an elliptic operator and a free random variable in a finite von Neumann algebra

P Zhong - arXiv preprint arXiv:2108.09844, 2021 - arxiv.org
Given a $ n\times n $ random matrix $ X_n $ with iid entries of unit variance, the circular law
says that the empirical spectral distribution (ESD) of $ X_n/\sqrt {n} $ converges to the …

Density of Brown measure of free circular Brownian motion

L Erdős, HC Ji - arXiv preprint arXiv:2307.08626, 2023 - arxiv.org
We consider the Brown measure of free circular Brownian motion $\boldsymbol {a}+\sqrt
{t}\boldsymbol {x} $, where $\boldsymbol {a} $ is a general non-normal operator and …

Random matrices with row constraints and eigenvalue distributions of graph Laplacians

P Akara-pipattana, O Evnin - Journal of Physics A: Mathematical …, 2023 - iopscience.iop.org
Symmetric matrices with zero row sums occur in many theoretical settings and in real-life
applications. When the offdiagonal elements of such matrices are iid random variables and …

The Brown measure of a sum of two free random variables, one of which is triangular elliptic

S Belinschi, Z Yin, P Zhong - Advances in Mathematics, 2024 - Elsevier
The triangular elliptic operators are natural extensions of the elliptic deformation of circular
operators. We obtain a Brown measure formula for the sum of a triangular elliptic operator g …