217 citations · 625 across the 22 of their papers we have counts for
5 papers · 1 filter
Finite-state automata for exact matrix product operators of tight-binding Hamiltonians: fractals, quasicrystals, trees and hyperbolic lattices
Marta Brzezińska, Jeanne Colbois, Loïc Herviou
Inspired by the recent progress in the simulation of tight-binding Hamiltonians on large lattices using tensor networks, we introduce a systematic matrix product operator (MPO) con…
Why finite-size non-Hermitian eigenvalues can miss asymptotic eigenstates in topological physics
Lucien Jezequel, Loïc Herviou, Jens H. Bardarson +1
Non-Hermitian systems exhibit a fundamental spectral dichotomy absent in Hermitian physics: the eigenvalue spectrum and the eigenstate spectrum can deviate significantly in the the…
Fate of the non-Hermitian skin effect in many-body fermionic systems
Faisal Alsallom, Loïc Herviou, Oleg V. Yazyev +1
We revisit the fate of the skin modes in many-body non-Hermitian fermionic systems. Contrary to the single-particle case, the many-body ground state cannot exhibit an exponential l…
Defining a bulk-edge correspondence for non-Hermitian Hamiltonians via singular-value decomposition
Loic Herviou, Jens H. Bardarson, Nicolas Regnault
We address the breakdown of the bulk-boundary correspondence observed in non-Hermitian systems, where open and periodic systems can have distinct phase diagrams. The correspondence…
Many-terminal Majorana island: from Topological to Multi-Channel Kondo Model
Loïc Herviou, Karyn Le Hur, Christophe Mora
We study Kondo screening obtained by coupling Majorana bound states, located on a topological superconducting island, to interacting electronic reservoirs. At the charge degeneracy…