Freiburg 2024 – wissenschaftliches Programm
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A: Fachverband Atomphysik
A 3: Bosonic Quantum Gases I (joint session Q/A)
A 3.3: Vortrag
Montag, 11. März 2024, 11:30–11:45, Aula
Projection Optimization Method for Open-Dissipative Quantum Fluids and its Application to a Single Vortex in a Photon Bose-Einstein Condensate — •Joshua Krauß1, Marcos Alberto Gonçalves dos Santos Filho1,2, Francisco Ednilson Alves dos Santos2, and Axel Pelster1 — 1Physics Department and Research Center OPTIMAS, RPTU Kaiserslautern-Landau, Germany — 2Departamento de Física, Universidade Federal de São Carlos, Brazil
Open dissipative systems of quantum fluids have been well studied numerically. In view of a complementary analytical description we extend here the variational optimization method for Bose-Einstein condensates of closed systems to open-dissipative condensates. The resulting projection optimization method is applied to a complex Gross-Pitaevski equation, which models phenomenologically a photon Bose-Einstein condensate. Together with known methods from hydrodynamics we obtain an approximate vortex solution, which depends on the respective open system parameters and has the same properties as obtained numerically in the literature.
[1] J. Krauß, M.A.G. dos Santos Filho, F.E.A. dos Santos, and A. Pelster, arXiv:2311.10027
Keywords: photon Bose-Einstein condensate; open-dissipative quantum system; vortex; Gross-Pitaevskii equation; quantum fluid of light