Unconventional strongly interacting Bose-Einstein condensates in optical lattices

TL;DR

This paper explores how Feshbach resonances in non-s-wave channels can create unconventional Bose-Einstein condensates with non-zero orbital momentum in optical lattices, breaking lattice symmetry and revealing unique imaging patterns.

Contribution

It introduces a novel mechanism for forming non-s-wave condensates in optical lattices using Feshbach resonances in two-component bosonic mixtures.

Findings

Non-s-wave condensates can break lattice symmetry.

Time-reversal symmetry may also be broken.

Distinct absorption imaging patterns can reveal these condensates.

Abstract

Feschbach resonances in a non-s-wave channel of two-component bosonic mixtures can induce atomic Bose Einstein condensates with a non-zero orbital momentum in the optical lattice, if one component is in the Mott insulator state and the other is not. Such non-s-wave condensates break the symmetry of the lattice and, in some cases, time-reversal symmetry. They can be revealed in specific absorption imaging patterns.