Hydrodynamics of weak integrability breaking

A Bastianello, A De Luca… - Journal of Statistical …, 2021 - iopscience.iop.org
We review recent progress in understanding nearly integrable models within the framework
of generalized hydrodynamics (GHD). Integrable systems have infinitely many conserved …

Nonequilibrium dynamics and weakly broken integrability

J Durnin, MJ Bhaseen, B Doyon - Physical Review Letters, 2021 - APS
Motivated by dynamical experiments on cold atomic gases, we develop a quantum kinetic
approach to weakly perturbed integrable models out of equilibrium. Using the exact matrix …

Large-scale universality in quantum reaction-diffusion from Keldysh field theory

F Gerbino, I Lesanovsky, G Perfetto - Physical Review B, 2024 - APS
We consider the quantum reaction-diffusion dynamics in d spatial dimensions of a Fermi gas
subject to binary annihilation reactions A+ A→∅. These systems display collective …

Tunable transport in the mass-imbalanced Fermi-Hubbard model

P Zechmann, A Bastianello, M Knap - Physical Review B, 2022 - APS
The late-time dynamics of quantum many-body systems is organized in distinct dynamical
universality classes, characterized by their conservation laws and thus by their emergent …

Thermalization rates in the one-dimensional Hubbard model with next-to-nearest neighbor hop**

FRA Biebl, S Kehrein - Physical Review B, 2017 - APS
We consider a fermionic Hubbard chain with an additional next-to-nearest neighbor hop**
term. We study the thermalization rates of the quasimomentum distribution function within a …

On the emergence of quantum Boltzmann fluctuation dynamics near a Bose–Einstein condensate

T Chen, M Hott - Journal of Statistical Physics, 2023 - Springer
In this work, we study the quantum fluctuation dynamics in a Bose gas on a torus Λ=(LT) 3
that exhibits Bose–Einstein condensation, beyond the leading order Hartree–Fock …

Thermalization of oscillator chains with onsite anharmonicity and comparison with kinetic theory

CB Mendl, J Lu, J Lukkarinen - Physical Review E, 2016 - APS
We perform microscopic molecular dynamics simulations of particle chains with an onsite
anharmonicity to study relaxation of spatially homogeneous states to equilibrium, and …

Numerical scheme for a spatially inhomogeneous matrix-valued quantum Boltzmann equation

J Lu, CB Mendl - Journal of Computational Physics, 2015 - Elsevier
We develop an efficient algorithm for a spatially inhomogeneous matrix-valued quantum
Boltzmann equation derived from the Hubbard model. The distribution functions are 2× 2 …

Global Well‐Posedness of the Spatially Homogeneous Hubbard‐Boltzmann Equation

J Lukkarinen, P Mei, H Spohn - Communications on Pure and …, 2015 - Wiley Online Library
The Hubbard model is a simplified description for the evolution of interacting spin fermions
on ad‐dimensional lattice. In a kinetic scaling limit, the Hubbard model can be associated …

Matrix-valued quantum lattice Boltzmann method

CB Mendl - International Journal of Modern Physics C, 2015 - World Scientific
We devise a lattice Boltzmann method (LBM) for a matrix-valued quantum Boltzmann
equation, with the classical Maxwell distribution replaced by Fermi–Dirac functions. To …