Yong Zhang

collaborators

3 papers

cond-mat.stat-mech2026

The Fermi-Pasta-Ulam-Tsingou problem after 70 years: toward universal laws of thermalization in lattice systems in the thermodynamic limit

Weicheng Fu, Zhen Wang, Wei Lin +4

The Fermi--Pasta--Ulam--Tsingou (FPUT) problem provides a paradigmatic framework for understanding thermalization in weakly nonlinear many-body Hamiltonian systems. This focused re…

math.AP2026

Nonsymmetric sign-changing solutions for the partially overdetermined eigenvalue problem on a hollow cylinder

Guowei Dai, Yingxin Sun, Yong Zhang

Fix $R \in (0, 1)$ and $N \geq 2$ , and let $λ_{k}$ be the $k$ th eigenvalue of the radial Dirichlet problem on the annulus $A_{R} := {x \in R^{N} : R < ∣ x ∣ < 1}$ . For every $k \geq 1$ we constru…

cond-mat.stat-mech2025

From Near-Integrable to Far-from-Integrable: A Unified Picture of Thermalization and Heat Transport

Weicheng Fu, Zhen Wang, Yisen Wang +2

Whether and how a system approaches equilibrium is central in nonequilibrium statistical physics, crucial to understanding thermalization and transport. Bogoliubov's three-stage (i…