Mainz 2026 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 64: Poster – Ultra-cold atoms, ions and BEC (joint session A/Q)

Q 64.29: Poster

Donnerstag, 5. März 2026, 17:00–19:00, Philo 1. OG

Temperature-dependent extended Gross-Pitaevskii treatment for dipolar quantum gases — •Julian Kusch, Wyatt Kirkby, and Lauriane Chomaz — Physikalisches Institut, Universität Heidelberg

We investigate the theoretical effects of finite temperature on dipolar quantum gases. The extended Gross-Pitaevskii equation (eGPE) serves as the general framework, including isotropic contact interactions, anisotropic long-range dipole interactions and beyond-mean-field effects. By extending the eGPE to include a term based on Bogoliubov theory, we describe the influence of finite temperatures and study the impact on the phase diagram and real-time evolution. We also compare our results directly with experimental observations from the Heidelberg Dysprosium lab.

Keywords: Dipolar quantum gases; Supersolids; Gross-Pitaevskii theory; Bose-Einstein condensate; Finite temperature