Dynamics of kicked matter-wave solitons in an optical lattice

TL;DR

This paper studies how applying a kick affects the movement of matter-wave solitons in a Bose-Einstein condensate within an optical lattice, revealing a transition from pinned to mobile states based on various parameters.

Contribution

It introduces a detailed analysis of the dynamics of kicked matter-wave solitons in optical lattices using the nonpolynomial Schrödinger equation framework.

Findings

The soliton's motion depends on the kick strength, self-attraction, and lattice parameters.

A crossover from pinning to free motion is identified.

The dynamics are characterized within a specific theoretical model.

Abstract

We investigate effects of the application of a kick to one-dimensional matter-wave solitons in a self-attractive Bose-Einstein condensate trapped in a optical lattice. The resulting soliton's dynamics is studied within the framework of the time-dependent nonpolynomial Schrodinger equation. The crossover from the pinning to quasi-free motion crucially depends on the size of the kick, strength of the self-attraction, and parameters of the optical lattice.