Moving Bose mixtures with dipole-dipole interactions

TL;DR

This paper investigates the effects of relative motion and dipole-dipole interactions on the properties of moving Bose-Bose mixtures, revealing unconventional behaviors in certain regimes through analytical and numerical methods.

Contribution

It provides a comprehensive analysis of moving dipolar Bose mixtures using Hartree-Fock-Bogoliubov theory, highlighting new effects of interspecies interactions and motion.

Findings

Unconventional behavior in lower branch mixtures

Impact of dipole-dipole interactions on ground-state energy

Altered pair correlations due to relative motion

Abstract

We study the properties of moving uniform dipolar Bose-Bose mixtures using the full Hartree-Fock-Bogoliubov theory. The analytical and numerical calculations emphasize that the competition between the relative motion of two fluids and the interspecies dipole-dipole interactions may affect the behavior of the condensed depletion, the anomalous density, the ground-state energy and second-order pair correlation. It is found that in the lower branch of the mixture, these quantities are unimportant and present an unconventional behavior.