Théorique, numérique
Ultracold quantum gases confined in three-dimensional bubble traps are promising tools for exploring many-body effects on curved manifolds. As an alternative to the conventional technique of radio-frequency dressing, one could create such shell-shaped Bose-Einstein condensates in microgravity based on dual-species atomic mixtures. Beyond similarities with the radio-frequency dressing method as in the collective-excitation spectrum, this approach has several natural advantages like the robustness of the created quantum bubbles and the possibility to magnify shell effects through an interaction-driven expansion. The internship proposed here, co-supervised by Prof. Eric Charron in Paris-Saclay University (France) and by Dr. Naceur Gaaloul at the Leibniz University of Hanover (Germany), aims to theoretically explore dynamical effects on the surface of quantum bubbles (collective oscillations, vortex physics, etc.) that are unique to this system with periodic boundary conditions. Proposals to implement these findings in existing microgravity and space experiments accessible to both groups will be sought for.