Classical and quantum theory of fluctuations for many‐particle systems out of equilibrium

E Schroedter, M Bonitz - Contributions to Plasma Physics, 2024 - Wiley Online Library
Correlated classical and quantum many‐particle systems out of equilibrium are of high
interest in many fields, including dense plasmas, correlated solids, and ultracold atoms …

Precise evaluation of thermal response functions by optimized density matrix renormalization group schemes

T Barthel - New Journal of Physics, 2013 - iopscience.iop.org
This paper provides a study and discussion of earlier as well as novel more efficient
schemes for the precise evaluation of finite-temperature response functions of strongly …

Chiral spin liquids in arrays of spin chains

G Gorohovsky, RG Pereira, E Sela - Physical Review B, 2015 - APS
We describe a coupled-chain construction for chiral spin liquids in two-dimensional spin
systems. Starting from a one-dimensional zigzag spin chain and imposing SU (2) symmetry …

Nonequilibrium dynamics in pumped Mott insulators

S Ejima, F Lange, H Fehske - Physical Review Research, 2022 - APS
We use time-evolution techniques for (infinite) matrix product states to calculate, directly in
the thermodynamic limit, the time-dependent photoemission spectra and dynamic structure …

Finite-temperature dynamics of the Mott insulating Hubbard chain

A Nocera, FHL Essler, AE Feiguin - Physical Review B, 2018 - APS
We study the dynamical response of the half-filled one-dimensional Hubbard model for a
range of interaction strengths U and temperatures T by a combination of numerical and …

Two‐Time Quantum Fluctuations Approach and Its Relation to the Bethe–Salpeter Equation

E Schroedter, M Bonitz - physica status solidi (b), 2024 - Wiley Online Library
Correlated quantum many‐particle systems out of equilibrium are of high interest in many
fields, including correlated solids, ultracold atoms, or dense plasmas. Accurate theoretical …

Pseudoparticle approach to 1D integrable quantum models

JMP Carmelo, PD Sacramento - Physics Reports, 2018 - Elsevier
Over the last three decades a large number of experimental studies on several quasi one-
dimensional (1D) metals and quasi 1D Mott–Hubbard insulators have produced evidence …

Quantum fluctuations approach to the nonequilibrium approximation: Density correlations and dynamic structure factor

E Schroedter, BJ Wurst, JP Joost, M Bonitz - Physical Review B, 2023 - APS
The quantum dynamics of correlated fermionic or bosonic many-body systems following
external excitation can be successfully studied using nonequilibrium Green functions …

Quantum Monte Carlo solution of the dynamical mean field equations in real time

Q Dong, I Krivenko, J Kleinhenz, AE Antipov, G Cohen… - Physical Review B, 2017 - APS
We present real-time inchworm quantum Monte Carlo results for single-site dynamical mean
field theory on an infinite coordination number Bethe lattice. Our numerically exact results …

Charge dynamics of correlated electrons: Variational description with inclusion of composite fermions

K Ido, M Imada, T Misawa - Physical Review B, 2020 - APS
We propose a method to calculate the charge dynamical structure factors for the ground
states of correlated electron systems based on the variational Monte Carlo method. Our …