Deep thermalization in constrained quantum systems
Tanmay Bhore, Jean-Yves Desaules, Zlatko Papić
Abstract
Generic quantum systems thermalize as entanglement builds up between a subsystem and its complement. Performing measurements on a complementary subsystem, however, can reveal finer nuances in the system's ability to thermalize. The authors show here that systems that look `thermal' under the lens of the Eigenstate Thermalization Hypothesis (ETH) can be highly `nonthermal' when probed deeper. They illustrate this finding on several constrained models that describe slow relaxation in quantum glasses and quantum many-body scars in Rydberg atom arrays.
Topics & Concepts
ThermalisationPhysicsQuantum entanglementQuantumRydberg atomRydberg formulaRelaxation (psychology)Quantum mechanicsQuantum systemStatistical physicsPsychologyIonIonizationSocial psychologyQuantum many-body systemsAdvanced Thermodynamics and Statistical MechanicsCold Atom Physics and Bose-Einstein Condensates