3 papers
nlin.CD2026
Thermalization of Weakly Nonintegrable FPUT and Toda Dynamics: A Lyapunov Spectrum Perspective
Aniket Patra, Sergej Flach
We study the thermalization slowing down of Fermi-Past-Ulam-Tsingou (FPUT) chains and of Toda chains with nonintegrable boundaries. We focus on the transition from FPUT to harmonic…
nlin.CD2025
Measuring FPUT thermalization with Toda integrals
Helen Christodoulidi, Sergej Flach
We assess the ergodic properties of the Fermi-Pasta-Ulam-Tsingou- model for generic initial conditions using a Toda integral. It serves as an adiabatic invariant for the system…
quant-ph2025
Trotter transition in BCS pairing dynamics
Aniket Patra, Emil A. Yuzbashyan, Boris L. Altshuler +1
We study universal aspects of thermalization induced by Trotterization, a procedure routinely used in gate-based quantum computation. We use the reduced-BCS model -- quantum integr…