Wave Turbulence and thermalization in one-dimensional chains

M Onorato, YV Lvov, G Dematteis, S Chibbaro - Physics Reports, 2023 - Elsevier
One-dimensional chains are used as a fundamental model of condensed matter, and have
constituted the starting point for key developments in nonlinear physics and complex …

Adiabatic eigenstate deformations as a sensitive probe for quantum chaos

M Pandey, PW Claeys, DK Campbell, A Polkovnikov… - Physical Review X, 2020 - APS
In the past decades, it was recognized that quantum chaos, which is essential for the
emergence of statistical mechanics and thermodynamics, manifests itself in the effective …

Asymptotic prethermalization in periodically driven classical spin chains

O Howell, P Weinberg, D Sels, A Polkovnikov… - Physical review letters, 2019 - APS
We reveal a continuous dynamical heating transition between a prethermal and an infinite-
temperature stage in a clean, chaotic periodically driven classical spin chain. The transition …

Effect of discrete breathers on the specific heat of a nonlinear chain

M Singh, AY Morkina, EA Korznikova… - Journal of Nonlinear …, 2021 - Springer
A nonlinear chain with sixth-order polynomial on-site potential is used to analyze the
evolution of the total-to-kinetic-energy ratio during development of modulational instability of …

Double Scaling in the Relaxation Time in the -Fermi-Pasta-Ulam-Tsingou Model

YV Lvov, M Onorato - Physical review letters, 2018 - APS
We consider the original β-Fermi-Pasta-Ulam-Tsingou system; numerical simulations and
theoretical arguments suggest that, for a finite number of masses, a statistical equilibrium …

Four-wave mixing and coherently coupled Schrödinger equations: Cascading processes and Fermi–Pasta–Ulam–Tsingou recurrence

HM Yin, Q Pan, KW Chow - Chaos: An Interdisciplinary Journal of …, 2021 - pubs.aip.org
Modulation instability, breather formation, and the Fermi–Pasta–Ulam–Tsingou recurrence
(FPUT) phenomena are studied in this article. Physically, such nonlinear systems arise …

Weakly nonergodic dynamics in the Gross-Pitaevskii lattice

T Mithun, Y Kati, C Danieli, S Flach - Physical review letters, 2018 - APS
The microcanonical Gross-Pitaevskii (also known as the semiclassical Bose-Hubbard)
lattice model dynamics is characterized by a pair of energy and norm densities. The grand …

Wave-turbulence origin of the instability of anderson localization against many-body interactions

Z Wang, W Fu, Y Zhang, H Zhao - Physical Review Letters, 2020 - APS
Whether Anderson localization is robust against many-body interactions and, closely
related, whether a disordered many-body system can be thermalized are long outstanding …

Equilibration of quasi-integrable systems

T Goldfriend, J Kurchan - Physical Review E, 2019 - APS
We study the slow relaxation of isolated quasi-integrable systems, focusing on the classical
problem of Fermi-Pasta-Ulam-Tsingou (FPU) chain. It is well known that the initial energy …

Dynamical glass and ergodization times in classical josephson junction chains

T Mithun, C Danieli, Y Kati, S Flach - Physical review letters, 2019 - APS
Models of classical Josephson junction chains turn integrable in the limit of large energy
densities or small Josephson energies. Close to these limits the Josephson coupling …