Dynamics of Dipolar Spinor Condensates

TL;DR

This paper investigates the semiclassical dynamics of dipolar spinor condensates, revealing how interactions and initial conditions influence population dynamics, leading to phenomena like spontaneous magnetization and quantum self-trapping.

Contribution

It introduces a detailed analysis of how dipole-dipole interactions affect spinor condensate dynamics, highlighting controllable phenomena based on trap geometry.

Findings

Interaction strength and initial conditions critically influence dynamics

Dipolar interactions enable manipulation of spin populations

Spontaneous magnetization and quantum self-trapping observed

Abstract

We study the semiclassical dynamics of a spinor condensate with the magnetic dipole-dipole interaction included. The time evolution of the population imbalance and the relative phase among different spin components depends greatly on the relative strength of interactions as well as on the initial conditions. The interplay of spin exchange and dipole-dipole interaction makes it possible to manipulate the atomic population on different components, leading to the phenomena of spontaneous magnetization and Macroscopic Quantum Self Trapping. Simple estimate demonstrates that these effects are accessible and controllable by modifying the geometry of the trapping potential.