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Q: Fachverband Quantenoptik und Photonik
Q 36: Ultra-cold Atoms, Ions and BEC III (joint session A/Q)
Q 36.4: Vortrag
Mittwoch, 12. März 2025, 12:00–12:15, KlHS Mathe
Modeling thermodynamic and dynamic properties of Bose-Einstein condensate bubbles in microgravity — •Brendan Rhyno1,2, Timothé Estrampes1,3, Gabriel Müller1, Charles Garcion1, Eric Charron3, Jean-Baptiste Gerent4, Nathan Lundblad4, Smitha Vishveshwara2, and Naceur Gaaloul1 — 1Leibniz Universität Hannover — 2University of Illinois at Urbana-Champaign — 3Université Paris-Saclay — 4Bates College
The study of Bose-Einstein condensate (BEC) bubbles has received increasing attention in recent years. We discuss our efforts to model the properties of such systems in view of the current Cold Atom Lab experiments and the prospects of realizing BEC bubbles in the microgravity environment of the Einstein-Elevator at the Leibniz University of Hanover. Using an isotropic `bubble trap' potential, we explore both the thermodynamic and dynamic inflation of dilute Bose-condensed bubbles. In the thermodynamic treatment, adiabatic inflation from an initial filled spherical BEC into a large thin spherical shell leads to condensate depletion. In the dynamic treatment, we study the non-equilibrium expansion and contraction of the system in the vicinity of the BEC phase transition. We conclude by discussing how our work can inform the ongoing experimental efforts.
Keywords: Bose-Einstein condensates; microgravity; quantum bubbles; thermodynamics