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

TL;DR

This paper investigates how Lee-Huang-Yang quantum corrections influence a disordered dipolar Bose gas, revealing their role in stabilizing the condensate and affecting superfluid properties.

Contribution

It provides a perturbative analysis of quantum corrections and disorder effects on dipolar Bose gases, highlighting their impact on condensate stability and superfluid behavior.

Findings

LHY corrections prevent dipolar implosion.

Disorder effects are reduced by LHY corrections.

Superfluid density shows unconventional behavior.

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.