Phase separations of bosonic mixtures in optical lattices from macroscopic to microscopic scales

TL;DR

This paper investigates how mixtures of cold bosonic atoms in optical lattices undergo phase separations across various length scales as inter-species repulsion increases, revealing diverse phenomena in superfluids and Mott-insulators.

Contribution

It provides a comprehensive analysis of phase separation phenomena in bosonic mixtures across different length scales, highlighting the influence of interaction strengths.

Findings

Phase separation length scales decrease with increasing intra-species interactions.

Diverse phenomena observed in superfluid and Mott-insulator regimes.

Illustrative examples demonstrate the range of phase separation behaviors.

Abstract

Mixtures of cold bosonic atoms in optical lattices undergo phase separations on different length scales with increasing inter-species repulsion. As a general rule, the stronger the intra-species interactions, the shorter is this length scale. The wealth of phenomena is documented by illustrative examples on both superfluids and Mott-insulators.