A new Bloch period for interacting cold atoms in 1D optical lattices

TL;DR

This paper introduces a novel interaction-induced Bloch period for ultracold atoms in 1D optical lattices, supported by analytical and numerical evidence, advancing understanding of many-body quantum dynamics.

Contribution

It identifies a new Bloch period caused by atom-atom interactions, providing analytical and numerical validation for this phenomenon.

Findings

Discovery of an interaction-induced Bloch period

Analytical derivation of the new period

Numerical simulations confirming the analytical results

Abstract

The paper studies Bloch oscillations of ultracold atoms in optical lattice in the presence of atom-atom interaction. A new, interaction-induced Bloch period is identified. The analytical results are corroborated by realistic numerical calculations.