We prove fundamental rigorous bounds on the speed of quantum evolution for a quantum system coupled to a thermal bath. The bounds are formulated in terms of expectation values of few-body observables derived from the system-bath Hamiltonian. They do not rely on the Markov approximation and, as a consequence, are applicable beyond the limit of weak system-bath coupling.
@article{arxiv.2302.13639,
title = {Quantum speed limits for an open system in contact with a thermal bath},
author = {N. Il'in and A. Aristova and O. Lychkovskiy},
journal= {arXiv preprint arXiv:2302.13639},
year = {2024}
}