Effects of quantum depletion and gradient corrections on the critical atom number of dipolar droplets
ORAL
Abstract
The first experimental realization of quantum droplets in dipolar condensates [1] has highlighted the importance of quantum fluctuations [2,3], which were later shown to be the main source of system's stability against the dipolar collapse. The droplets were predicted and shown to be self-bound beyond the critical atom number even without the trap. However, there is a systematic difference in theoretical estimates of the critical atom number and experimental results [4]. Here we use an approach based on the extended Gross-Pitaevskii equation, which includes quantum depletion and beyond-LDA gradient corrections, to numerically and variationally study their effects on the critical atom number.
[1] H. Kadau et al., Nature 530, 194 (2016).
[2] A. R. P. Lima and A. Pelster, Phys. Rev. A 84, 041604(R) (2011).
[3] A. R. P. Lima and A. Pelster Phys. Rev. A 86, 063609 (2012).
[4] F. Böttcher et al., Phys. Rev. Research 1, 033088 (2019).
[1] H. Kadau et al., Nature 530, 194 (2016).
[2] A. R. P. Lima and A. Pelster, Phys. Rev. A 84, 041604(R) (2011).
[3] A. R. P. Lima and A. Pelster Phys. Rev. A 86, 063609 (2012).
[4] F. Böttcher et al., Phys. Rev. Research 1, 033088 (2019).
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Publication: We are currently working a paper that will include results presented here.
Presenters
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Antun J Balaz
Institute of Physics Belgrade, University of Belgrade, Serbia, Institute of Physics Belgrade
Authors
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Antun J Balaz
Institute of Physics Belgrade, University of Belgrade, Serbia, Institute of Physics Belgrade
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Milan Radonjic
I. Institute of Theoretical Physics, University of Hamburg, Germany; Institute of Physics Belgrade, University of Belgrade, Serbia
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Axel Pelster
Department of Physics and Research Center OPTIMAS, Rheinland-Pfälzische Technische Universität Kaiserslautern-Landau, Germany