Geometrically Frustrated Coarsening Dynamics in Spinor Bose-Fermi Mixtures

TL;DR

This paper investigates how geometrical frustration affects coarsening dynamics in spinor Bose-Fermi mixtures, revealing suppression of coarsening, metastable states, and universal scaling laws unique to these nonequilibrium systems.

Contribution

It demonstrates that geometrical frustration can suppress coarsening in spinor Bose-Fermi mixtures, leading to metastable states with topological features and novel universal scaling laws.

Findings

Coarsening dynamics can be suppressed by geometrical frustration.

The system approaches a metastable state with finite correlation lengths.

Universal scaling laws relate frustration to vortex number and correlation length.

Abstract

Coarsening dynamics theory has successfully described the equilibration of a broad class of systems.By studying the relaxation of a periodic array of microcondensates immersed in a Fermi gas which can mediate long-range spin interactions to simulate frustrated classical magnets, we show that coarsening dynamics can be suppressed by geometrical frustration. The system is found to eventually approach a metastable state which is robust against random field noise and characterized by finite correlation lengths with the emergence of topologically stable Z2 vortices. We find universal scaling laws with no thermal-equilibrium analog that relate the correlation lengths and the number of vortices to the degree of frustration in the system.