Controlling nonautonomous matter waves in "smart" transient trap variations

TL;DR

This paper investigates how to control nonautonomous matter waves in Bose-Einstein condensates using time-dependent trap variations, employing mathematical transformations to generate solvable models and analyze soliton behavior.

Contribution

It introduces a method to design temporal trap modulations using exactly solvable potentials and their rational extensions, revealing different soliton dynamics.

Findings

Different trap modulations lead to distinct soliton compression behaviors.

The use of Riccati and Cole-Hopf transformations facilitates the design of controllable trap variations.

Regular and rational extended potentials produce structurally different temporal modulations.

Abstract

In this paper, we study the controllable behavior of nonautonomous matter waves in different "smart" transient trap variations in the context of the cigar-shaped Bose-Einstein condensates. By utilizing a self-similarity transformation we reduce the nonautonomous Gross-Pitaevskii (GP) equation to the elliptic equation that admits soliton solutions. This procedure leads to a consistency equation which is in the form of Riccati equation. The connection between the Riccati and the linear Schr\"odinger equation, through the Cole-Hopf transformation, is exploited profitably here to introduce temporal trap variations. For our study, we explore the possibility of using one dimensional exactly solvable (ES) potentials and their newly constructed rational extensions, as functions of time to introduce interesting temporal trap modulations. The fact that the regular potentials and their rational extensions being structurally different, leads to different temporal modulations. It is exhibited that the soliton behavior with respect to compression in both these cases is quite different.