Bonn 2025 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 25: Poster – Cold Atoms and Molecules, Matter Waves (joint session Q/A/MO)
Q 25.26: Poster
Tuesday, March 11, 2025, 14:00–16:00, Tent
Pattern formation in dipolar quantum gases — •Andreea-Maria Oros1, Niklas Rasch1, Wyatt Kirkby1,2, Lauriane Chomaz2, and Thomas Gasenzer1,3 — 1Kirchhoff-Institut für Physik, Universität Heidelberg, Im Neuenheimer Feld 227 — 2Physikalisches Institut, Universität Heidelberg, Im Neuenheimer Feld 276 — 3Institut für Theoretische Physik, Universität Heidelberg, Philosophenweg 16
Ultracold dipolar gases have garnered increasing interest over the past years. The anisotropic and long-range character of the dipolar interaction and the stabilizing nature of the quantum fluctuations give rise to supersolidity, superglasses, and exotic states of matter. Depending on the atom number, scattering length, and trapping geometry, different supersolid morphologies, such as triangular, honeycomb, and labyrinthine, have already been theoretically predicted to be the possible ground states of such a system. Our work expands on these phases by considering the out-of-equilibrium dynamics of a harmonically trapped, three-dimensional dipolar condensate. Following a quench in the scattering length across a phase transition boundary, we investigate the dynamical formation of supersolids, and demonstrate quenches into the triangular, honeycomb, and labyrinth phases. We furthermore investigate systems which have artificially been brought out of equilibrium, such as systems with imprinted vortex ensembles, or where the initial state differs from one that could naturally occur, in order to better aid the search for non-thermal fixed points, as well as far-from-equilibrium and novel phenomena.
Keywords: dipolar gases; far-from-equilibrium dynamics; supersolid; pattern formation; non-thermal fixed points