130 citations · 324 across the 7 of their papers we have counts for
7 papers
Algorithm for computing perturbation series of dynamical mean field theory
Corentin Bertrand, Michel Ferrero, Olivier Parcollet
We show how to use diagrammatic techniques to compute the weak-coupling perturbation series of the self-consistent solution to a Dynamical Mean Field Theory (DMFT) problem. This ap…
Detector-tuned overlap catastrophe in quantum dots
Sarath Sankar, Corentin Bertrand, Antoine Georges +2
The Anderson overlap catastrophe (AOC) is a many-body effect arising as a result of a shakeup of a Fermi sea due to an abrupt change of a local potential, leading to a power-law de…
Quantum Quasi-Monte Carlo algorithm for out-of-equilibrium Green functions at long times
Corentin Bertrand, Daniel Bauernfeind, Philipp T. Dumitrescu +3
We extend the recently developed Quantum Quasi-Monte Carlo (QQMC) approach to obtain the full frequency dependence of Green functions in a single calculation. QQMC is a general app…
Quantum Quasi-Monte Carlo Technique for Many-Body Perturbative Expansions
Marjan Maček, Philipp T. Dumitrescu, Corentin Bertrand +3
High order perturbation theory has seen an unexpected recent revival for controlled calculations of quantum many-body systems, even at strong coupling. We adapt integration methods…
Reconstructing non-equilibrium regimes of quantum many-body systems from the analytical structure of perturbative expansions
Corentin Bertrand, Serge Florens, Olivier Parcollet +1
We propose a systematic approach to the non-equilibrium dynamics of strongly interacting many-body quantum systems, building upon the standard perturbative expansion in the Coulomb…
A Quantum Monte Carlo algorithm for out-of-equilibrium Green's functions at long times
Corentin Bertrand, Olivier Parcollet, Antoine Maillard +1
We present a quantum Monte-Carlo algorithm for computing the perturbative expansion in power of the coupling constant of the out-of-equilibrium Green's functions of interacting…
Anomalous Thouless energy and critical statistics on the metallic side of the many-body localization transition
Corentin L. Bertrand, Antonio M. García-García
We study a one-dimensional (1d) XXZ spin-chain in a random field on the metallic side of the many-body localization transition by level statistics. For a fixed interaction, and int…