Speaker: Valentin Boettcher (TU Dresden)

Title: Bath Observables with HOPS: Energy Flow in Strongly Coupled Open Quantum Systems"

Abstract: The hierarchy of pure states (HOPS) is a general purpose stochastic numerical framework for the exact simulation of non-Markovian strongly coupled open systems. Without modification of the core method, it is possible to calculate the interaction energy and the bath energy change. This is due to HOPS’ foundation on the global dynamics of the system and the bath in contrast to master-equation methods. We extended the result in for the Hierarchical Equations Of Motion method to arbitrary modulations of system and coupling inheriting all the advantages of the HOPS method. We present the basic theory and its application to simple driven spin-boson like systems, as well as a comparison with an exact solution for a quantum Brownian motion like model.