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A: Fachverband Atomphysik
A 11: Atomic Systems in External Fields I
A 11.3: Talk
Tuesday, March 3, 2026, 11:45–12:00, N 2
Modeling dissipation in quantum active matter — Alexander P. Antonov1, Sangyun Lee2, Benno Liebchen3, Hartmut Löwen1, Jannis Melles1, Giovanna Morigi4, Yehor Tuchkov2, and •Michael te Vrugt2 — 1Institut für Theoretische Physik II, Weiche Materie, Heinrich-Heine-Universität Düsseldorf — 2Institut für Physik, Johannes Gutenberg-Universität Mainz — 3Institut für Physik der kondensierten Materie, Technische Universität Darmstadt — 4Theoretische Physik, Universität des Saarlandes
Active particles, such as flying birds and swimming bacteria, are a widely studied class of systems in classical soft matter physics. Recently, there have been a variety of suggestions for how to realize activity on a quantum level in cold atom systems. Here, we investigate one particular way in which such quantum active matter may differ from its classical counterpart, namely the way in which it is influenced by dissipation. We find that the choice of the quantum heat bath strongly influences the dynamics of quantum active matter at short timescales, which is the regime in which quantum effects are most relevant.
Keywords: Active matter; Dissipative systems