Decoherence effects in the dynamics of interacting ultracold bosons in disordered lattices

TL;DR

This paper investigates how disorder, interactions, and decoherence from spontaneous emission influence the dynamics of ultracold bosons in disordered lattices, revealing their complex interplay through numerical simulations.

Contribution

It introduces a mean-field Anderson model with spontaneous emission to analyze decoherence effects on ultracold bosons in disordered lattices.

Findings

Decoherence significantly alters dynamical regimes.

Scaling laws depend on initial state width.

Physical mechanisms are interpreted through simple models.

Abstract

We study the interplay between disorder, interactions and decoherence induced by spontaneous emission process. Interactions are included in the Anderson model via a mean-field approximation, and a simple model for spontaneous emission is introduced. Numerical simulations allow us to study the effects of decoherence on different dynamical regimes. Physical pictures for the mechanisms at play are discussed and provide simple interpretations. Finally, we discuss the validity of scaling laws on the initial state width.