Effects of the Lee-Huang-Yang quantum corrections on a disordered dipolar Bose gas

Abdelâali Boudjemâa ()
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Abdelâali Boudjemâa: Faculty of Exact Sciences and Informatics, Hassiba Benbouali University of Chlef

The European Physical Journal B: Condensed Matter and Complex Systems, 2019, vol. 92, issue 7, 1-7

Abstract: Abstract We study the behavior of a quantum dipolar Bose condensate with the Lee-Huang-Yang quantum corrections at zero temperature in the presence of weak disorder potential. We solve the underlying nonlocal Gross-Pitaevskii equation using a perturbative theory. The role of both the Lee-Huang-Yang term and the disorder potential on the condensed fraction, the equation of state, the compressibility and the superfluid density is deeply analyzed. Surprisingly, we find that the Lee-Huang-Yang quantum corrections not only arrest the dipolar implosion but also lead to reduce the condensate fluctuations due to the disorder effects prohibiting the formation of a Bose glass state. We show that the superfluid density exhibits unconventional behavior. Graphical abstract

Keywords: Statistical; and; Nonlinear; Physics (search for similar items in EconPapers)
Date: 2019
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DOI: 10.1140/epjb/e2019-100217-2

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