Ergodicity Breaking in MPS Effective Hamiltonians

DMRG effective Hamiltonians—routinely used for ground-state approximation—are shown to capture many-body localization transitions, level statistics, and quantum many-body scars in large spin chains well beyond exact diagonalization limits.

#ManyBodyLocalization #QuantumSimulation #Research

Thermalisation as Diffusion in Hilbert Space

Microscopic theory of thermalisation beyond Markovian/Fermi-golden-rule assumptions: diffusion propagator links reduced thermometer dynamics to level-broadening statistics, verified via exact diagonalization on Lévy, TFIM, and Imbrie models.

#QuantumThermalization #ManyBodyLocalization #Research