Non-hermitian physics

Y Ashida, Z Gong, M Ueda - Advances in Physics, 2020 - Taylor & Francis
A review is given on the foundations and applications of non-Hermitian classical and
quantum physics. First, key theorems and central concepts in non-Hermitian linear algebra …

Biorthogonal quantum mechanics

DC Brody - Journal of Physics A: Mathematical and Theoretical, 2013 - iopscience.iop.org
The Hermiticity condition in quantum mechanics required for the characterization of (a)
physical observables and (b) generators of unitary motions can be relaxed into a wider class …

Quantum transport on disordered and noisy networks: an interplay of structural complexity and uncertainty

M Walschaers, F Schlawin, T Wellens… - Annual Review of …, 2016 - annualreviews.org
We discuss recent research on quantum transport in complex materials, from photosynthetic
light-harvesting complexes to photonic circuits. We identify finite, disordered networks as the …

Focusing inside disordered media with the generalized Wigner-Smith operator

P Ambichl, A Brandstötter, J Böhm, M Kühmayer… - Physical review …, 2017 - APS
We introduce a wave front sha** protocol for focusing inside disordered media based on a
generalization of the established Wigner-Smith time-delay operator. The key ingredient for …

On statistics of bi-orthogonal eigenvectors in real and complex Ginibre ensembles: combining partial Schur decomposition with supersymmetry

YV Fyodorov - Communications in Mathematical Physics, 2018 - Springer
We suggest a method of studying the joint probability density (JPD) of an eigenvalue and the
associated 'non-orthogonality overlap factor'(also known as the 'eigenvalue condition …

The distribution of overlaps between eigenvectors of Ginibre matrices

P Bourgade, G Dubach - Probability Theory and Related Fields, 2020 - Springer
We study the overlaps between eigenvectors of nonnormal matrices. They quantify the
stability of the spectrum, and characterize the joint eigenvalues increments under Dyson …

Resonances in open quantum systems

H Eleuch, I Rotter - Physical Review A, 2017 - APS
The Hamilton operator of an open quantum system is non-Hermitian. Its eigenvalues are
generally complex and provide not only the energies but also the lifetimes of the states of the …

Mean eigenvector self-overlap in the real and complex elliptic Ginibre ensembles at strong and weak non-Hermiticity

MJ Crumpton, YV Fyodorov, TR Würfel - arxiv preprint arxiv:2402.09296, 2024 - arxiv.org
We study the mean diagonal overlap of left and right eigenvectors associated with complex
eigenvalues in $ N\times N $ non-Hermitian random Gaussian matrices. In well known …

Clustering of exceptional points and dynamical phase transitions

H Eleuch, I Rotter - Physical Review A, 2016 - APS
The eigenvalues of a non-Hermitian Hamilton operator are complex and provide not only the
energies but also the lifetimes of the states of the system. They show a nonanalytical …

Eigenvalues, eigenvector-overlaps, and regularized Fuglede-Kadison determinant of the non-Hermitian matrix-valued Brownian motion

S Esaki, M Katori, S Yabuoku - arxiv preprint arxiv:2306.00300, 2023 - arxiv.org
The non-Hermitian matrix-valued Brownian motion is the stochastic process of a random
matrix whose entries are given by independent complex Brownian motions. The bi …