Supercooled superfluids in Monte Carlo simulations

TL;DR

This paper uses path integral Monte Carlo simulations to explore the imaginary time dynamics of metastable supercooled superfluids and nearly superglassy states in a bosonic square-well fluid, highlighting the importance of particle identity and exchange symmetry.

Contribution

It demonstrates the role of particle identity and exchange symmetry in stabilizing metastable states in quantum superfluids through simulation.

Findings

Particle identity and exchange symmetry are crucial for metastability.

Imaginary time dynamics indicates proximity to glassy arrest.

Simulation distinguishes between metastable and arrested states.

Abstract

We perform path integral Monte Carlo simulations to study the imaginary time dynamics of metastable supercooled superfluid states and nearly superglassy states of a one component fluid of spinless bosons square wells. Our study shows that the identity of the particles and the exchange symmetry is crucial for the frustration necessary to obtain metastable states in the quantum regime. Whereas the simulation time has to be chosen to determine whether we are in a metastable state or not, the imaginary time dynamics tells us if we are or not close to an arrested glassy state.