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TT: Fachverband Tiefe Temperaturen

TT 18: Focus Session: Relaxation Timescales in Open Quantum Systems (joint session TT/DY)

TT 18.2: Topical Talk

Montag, 9. März 2026, 15:30–16:00, CHE/0089

Asymptotic relaxation in quantum Markovian dynamics — •Susana Huelga — Institute of Theoretical Physics, Ulm University, Germany

We investigate the long-time dynamics of generic time-dependent GKLS master equations and provide sufficient conditions such that the dynamics is asymptotically independent of the initial state. These conditions represent a natural extension of the Spohn-Frigerio theorem to the case of a time-dependent generator. To illustrate our results, we analyze a specific master equation for driven systems and connect our conditions to the microscopic Hamiltonian of system and environment. The case of a 3-level system is also treated in detail. A brief mention of the non-Markovian case is included, with specific focus on time-local master equations which are asymptotically in Lindblad form. These findings pave the way for the development of a more general theory of relaxation beyond the Markovian case.

Keywords: open quantum systems; relaxation; time dependent Markovian dynamics