Open-system eigenstate thermalization in a noninteracting integrable
model
Open-system eigenstate thermalization in a noninteracting integrable
model
We study thermalization in isolated quantum systems from an open quantum systems perspective. We argue that for a small system connected to a macroscopic bath, the system observables are thermal if the combined system-bath configuration is in an eigenstate of its Hamiltonian, even for fully integrable models (unless thermalization is …