On unravelling of Lindblad equations with (some) negative rates (part 2)

by Erik Aurell (KTH)

Thursday 14 Mar 2024, 13:00 → 15:00 Europe/Stockholm

AlbaNova C4:3059 - Café Planck (AlbaNova Main Building)

In a contribution to the Lindblad memorial volume, Brecht and Muratore-Ginanneschi discussed unravelling of Lindblad equations with (some) negative rates [1] and memory effects. Unravelling means here that that the open system evolution e.g. the Lindblad equation is obtained as an ensemble average over random evolutions of the wave function a.k.a. the stochastic wave equation technique. Earlier contributions to incorporate memory effects by Strunz, Diosi, Gisin, Tilloy and Donvil and Muratore-Ginanneschi and others are cited in [1]. I will give a summary of [1], and then go on to point out that it can be used as a part of a method to simulate the evolution of a system interacting with a harmonic bath of Ohmic spectrum at arbitrary temperature. 

This is a follow-up on a previous talk (on Feb 29) where I did not quite get to the end.

[1] "On the unraveling of open quantum dynamics", Brecht Donvil and Paolo Muratore-Ginanneschi, Open Sys Inf Dynamics (2023) [arXiv.org:2309.13408]