Dynamic formation of supersolid phase in a mixture of ultracold bosonic and fermionic atoms

TL;DR

This paper investigates how a mixture of ultracold bosonic and fermionic atoms can dynamically transition into a supersolid phase when the interspecies attraction is increased, revealing a phase transition supported by excitation spectrum analysis.

Contribution

It demonstrates the dynamical formation of a supersolid phase in a boson-fermion mixture through numerical simulations of interaction strength variation.

Findings

Supersolid phase emerges at strong interspecies attraction

Goldstone mode appears in the excitation spectrum

Phase transition is dynamically induced by interaction tuning

Abstract

We numerically study the dynamical properties of a mixture consisting of a dipolar condensate and a degenerate Fermi gas in a quasi-one-dimensional geometry. In particular, we focus on the system's response to a temporal variation in the interaction strength between bosons and fermions. When the interspecies attraction becomes sufficiently strong, we observe a phase transition to a supersolid state. This conclusion is supported by the emergence of an out-of-phase Goldstone mode in the excitation spectrum.