Quantum Dew

TL;DR

This paper investigates phase separation in a nonequilibrium Bose gas with attractive interactions, demonstrating the formation of condensate drops resembling dew, with formation rates depending on initial density.

Contribution

It introduces a numerical study of quantum dew formation in an attractive Bose gas, highlighting the scaling behavior with initial density.

Findings

Condensate drops form in the system during evolution.

The formation rate scales with initial density as expected for two-particle collision processes.

The system exhibits a state with both condensed and uncondensed components.

Abstract

We consider phase separation in nonequilibrium Bose gas with an attractive interaction between the particles. Using numerical integrations on a lattice, we show that the system evolves into a state that contains drops of Bose-Einstein condensate suspended in uncondensed gas. When the initial gas is sufficiently rarefied, the rate of formation of this quantum dew scales with the initial density as expected for a process governed by two-particle collisions.