SKM 2023 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 5: Correlated Electrons: Method Development

TT 5.11: Vortrag

Montag, 27. März 2023, 12:15–12:30, HSZ 204

Efficient flow equations for dissipative systems — •Gary Schmiedinghoff and Götz S. Uhrig — Condensed Matter Theory, Technische Universität Dortmund, Otto-Hahn-Straße 4, 44227 Dortmund, Germany

Open quantum systems provide an essential theoretical basis for the development of novel quantum technologies, since any real quantum system inevitably interacts with its environment. Lindblad master equations capture the effect of Markovian environments. Closed quantum systems can be treated using flow equations with the particle conserving generator. We generalize this generator to non-Hermitian matrices and open quantum systems governed by Lindbladians, comparing our results with recently proposed generators by Rosso et al. In comparison, we find that our advocated generator provides an efficient flow with good accuracy in spite of truncations.