Josephson Dynamics of a Bose-Einstein Condensate in an Accelerated Double Well Potential

TL;DR

This paper investigates how acceleration affects Josephson dynamics in a Bose-Einstein condensate within a double well, revealing that acceleration suppresses oscillations and introduces dissipation, which stabilizes the system.

Contribution

It introduces a model for Josephson dynamics under acceleration, showing how acceleration-induced dissipation influences BEC behavior in double wells.

Findings

Acceleration suppresses coherent population oscillations.

Time-dependent Josephson coupling leads to dissipation.

Dissipation stabilizes the BEC system.

Abstract

Motivated by recent experiment on Bloch Oscillation of Bose-Einstein condensates (BEC) in accelerated optical lattices, we consider the Josephson dynamics of a BEC in an accelerated double well potential. We show that acceleration suppresses coherent population oscillation between the two wells. Accelerating the double well renders the Josephson coupling energy time dependent and this emerges as a source of dissipation.This dissipative mechanism helps to stabilize the system.The results are used to interpret recent experimental results[reference 16].