Properties of dipolar bosonic quantum gases at finite temperatures

TL;DR

This paper investigates the finite-temperature properties of dipolar bosonic quantum gases, deriving self-consistent equations and analyzing how dipolar interactions and temperature influence condensate depletion, thermodynamics, and structure factors.

Contribution

It introduces a self-consistent theoretical framework for analyzing finite-temperature dipolar bosonic gases, including corrections to key physical quantities and extension to trapped gases.

Findings

Dipolar interactions significantly affect condensate depletion.

Temperature influences thermodynamic properties and structure factors.

Results are generalized to trapped gas configurations.

Abstract

The properties of ultracold quantum gases of bosons with dipole-dipole interaction is investigated at finite temperature in the frame of the representative ensembles theory. Self-consistent coupled equations of motion are derived for the condensate and the non-condensate components. Corrections due to the dipolar interaction to the condensate depletion, the anomalous density and thermodynamic quantities such as the ground state energy, the equation of state, the compressibility and the presure are calculated in the homogeneous case at both zero and finite temperatures. Effects of interaction and temperature on the structure factor are also discussed. Within the realm of the local density approximation, we generalize our results to the case of a trapped dipolar gas.