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Macroscopic quantum dynamics of ultra cold Bose gases and quantum droplets

December 2, 2020 , 13:00 14:00

Speaker: Prof. Piotr Deuar
Affiliation: Institute of Physics, Polish Academy of Sciences, Warsaw, Poland

In the field of ultracold quantum systems, the celebrated nonlinear Schrodinger equation (aka the Gross-Pitaevskii equation) is in ubiquitous use to model the system and its quantum dynamics. However, what to do if this or its perturbative expansion, Bogoliubov theory, does not suffice?  I will present some of the relevant physics in the field such as thermal spontaneous soliton formation, atomic pair creation and the new field of quantum droplets, and give examples of how they can be simulated. In particular using scalable full quantum mechanics in phase-space and the so-called  “classical field” approaches. These allow one to deal with nonperturbative and far out of equilibrium physics (usually, mostly).

Seminar language: English

Chaiman: Ireneusz Weymann