Different growth rates for spin and superfluid order in a quenched spinor condensate

TL;DR

This study investigates the coarsening dynamics of a quenched spinor condensate, revealing different growth rates for spin and superfluid order, and demonstrating dynamic scaling and percolation behavior in the system.

Contribution

It introduces the analysis of different growth rates for spin and superfluid order in a quenched spinor condensate, highlighting the impact of spin rotation on dynamics.

Findings

Spin and superfluid orders grow at different rates with distinct critical exponents.

Dynamic scaling observed in the correlation functions of both orders.

Power law distribution of spin domain areas consistent with percolation theory.

Abstract

In this paper we study the coarsening dynamics of a spinor condensate quenched into an easy-axis ferromagnetic phase by a sudden change in the quadratic Zeeman energy. We show that applying a spin rotation prior to changing the Zeeman energy accelerates the development of local order and reduces heating. We examine the longitudinal spin ordering and the superfluid ordering of the system and show that the respective order parameter correlation functions exhibit dynamic scaling in the late time dynamics. Our results also demonstrate that these two types of order grow at different rates, i.e.~with different dynamic critical exponents. The spin domain area distribution is calculated and is shown to have power law scaling behavior expected from percolation theory.