Dresden 2026 – scientific programme
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DY: Fachverband Dynamik und Statistische Physik
DY 49: Active Matter V (joint session DY/BP)
DY 49.10: Talk
Thursday, March 12, 2026, 12:15–12:30, ZEU/0160
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
In classical active matter systems, dissipation plays a major role. Currently, there is an increased focus in exploring quantum mechanical active matter systems, for which the question of how to model dissipation is far from obvious. In fact, for open quantum systems, a variety of quantum heat bath models have been proposed that are valid in different physical situations. Here, we compare the effects of different quantum heat baths based on a recently proposed quantum active matter model [Phys. Rev. Res. 7, 033008 (2025)]. We find that the choice of the quantum heat bath strongly influences the dynamics at short timescales, which is the regime in which quantum effects are most relevant.
Keywords: Active matter; Quantum systems; Dissipation