Mainz 2026 – scientific programme
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A: Fachverband Atomphysik
A 2: Ultra-cold Plasmas and Rydberg Systems I (joint session A/Q)
A 2.3: Talk
Monday, March 2, 2026, 12:30–12:45, N 1
Signatures of emerging kinetic constraints in a weakly interacting dissipative Rydberg gas — •Viktoria Noel1 and Igor Lesanovsky1,2 — 1Institut für Theoretische Physik and Center for Integrated Quantum Science and Technology, Eberhard Karls Universität Tübingen, Auf der Morgenstelle 14, 72076 Tübingen, Germany — 2School of Physics and Astronomy and center for the Mathematics and Theoretical Physics of Quantum Non-Equilibrium Systems, The University of Nottingham, Nottingham, NG7 2RD, United Kingdom
We investigate the relaxation dynamics of a weakly interacting, dissipative Rydberg gas, and identify subtle signatures typically associated with kinetic constraints in more strongly interacting settings. We access mesoscopic one- and two-dimensional systems and resolve the dynamical features underlying this behaviour using the truncated Wigner approximation, also supported by exact benchmarks on smaller systems. We observe a weak slowdown in temporal correlations relative to a simple relaxation, while spacetime snapshots show prolonged excitation patches signalling dynamical heterogeneity. We trace these features to the interplay of coherent driving, interactions, and dissipation, which in part restricts relaxation pathways. Our results highlight that the onset of kinetic constraints may occur before the strongly interacting regime is reached, establishing weakly interacting Rydberg arrays as a promising platform for studying emergent slowed dynamics out of equilibrium.
Keywords: Dissipative Rydberg systems; Kinetic constraints; Truncated Wigner approximation; Nonequilibrium many-body dynamics; Quantum many-body simulations