Effects of dipole-dipole interaction between cigar-shaped BECs of cold alkali atoms: Towards inverse-squared interactions

TL;DR

This paper proposes a method to realize the Calogero-Sutherland inverse-squared interaction model in ultracold alkali Bose-Einstein condensates by enhancing dipole-dipole interactions in cigar-shaped geometries.

Contribution

It demonstrates how dipole-dipole interactions can dominate in cigar-shaped BECs, enabling experimental realization of the Calogero-Sutherland model.

Findings

Dipole-dipole coupling is significantly enhanced in cigar-shaped BECs.

Effective inverse squared interactions can be realized experimentally.

Potential to study fundamental physics models in ultracold atom systems.

Abstract

We show that the dipole-dipole coupling between Wannier modes in cigar-shaped Bose-Einstein condensates (BECs) is significantly enhanced while the short-range coupling strongly suppressed. As a result, the dipole-dipole interaction can become the dominant interaction between ultracold alkali Bose atoms. In the long length limit of a cigar-shaped BEC, the resulting effective one-dimensional models possess an effective inverse squared interacting potential, the Calogero-Sutherland potential, which plays a fundamental role in many fields of contemporary physics; but its direct experimental realization has been a challenge for a long time. We propose to realize the Calogero-Sutherland model in ultracold alkali Bose atoms and study the effects of the dipole-dipole interaction.