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Q: Fachverband Quantenoptik und Photonik
Q 25: Poster: Quantum Optics and Photonics I
Q 25.14: Poster
Tuesday, March 12, 2019, 16:30–18:30, S Atrium Informatik
Vortices and droplets in dipolar Bose-Einstein condensates — •Antun Balaž1 and Axel Pelster2 — 1Scientific Computing Laboratory, Center for the Study of Complex Systems, Institute of Physics Belgrade, University of Belgrade, Serbia — 2Research Center OPTIMAS and Department of Physics, Technische Universität Kaiserslautern, Germany
In the recent experiment [1], the Rosensweig instability was observed in a quantum ferrofluid of a strongly dipolar BEC, leading to a formation of atomic droplets, which represent a new state of quantum matter. In Ref. [2-4] it was demonstrated that the stability of such droplets is due to a quantum fluctuation correction of the ground-state energy [5-7]. Here we extend this previous theoretical description and develop a full Bogoliubov-Popov theory, which also takes into account the condensate depletion due to quantum fluctuations. We apply this approach and use extensive numerical simulations to study both the formation and the properties of vortices in a rotating 164Dy BEC, including the droplet phase.
[1] H. Kadau, et al., Nature 530, 194 (2016).
[2] F. Wächtler and L. Santos, Phys. Rev. A 93, 061603(R) (2016).
[3] F. Wächtler and L. Santos, Phys. Rev. A 94, 043618 (2016).
[4] L. Chomaz, et al., Phys. Rev. X 6, 041039 (2016).
[5] T. D. Lee, K. Huang, and C. N. Yang, Phys. Rev. 106, 1135 (1957).
[6] A. R. P. Lima and A. Pelster, Phys. Rev. A 84, 041604(R) (2011).
[7] A. R. P. Lima and A. Pelster, Phys. Rev. A 86, 063609 (2012).