Finite-momentum superfluidity and phase transitions in a p-wave resonant Bose gas

TL;DR

This paper investigates a two-species bosonic gas near a p-wave Feshbach resonance, revealing novel finite-momentum superfluid phases and analyzing their phase transitions.

Contribution

It introduces the concept of finite-momentum atomic-molecular superfluidity in a p-wave resonant Bose gas and characterizes the associated phase transitions.

Findings

Identification of finite-momentum superfluid phase at intermediate detuning.

Characterization of quantum and thermal phase transitions.

Analysis of phase diagram in a p-wave resonant Bose gas.

Abstract

We study a degenerate two-species gas of bosonic atoms interacting through a p-wave Feshbach resonance as for example realized in a Rb85-Rb87 mixture. We show that in addition to a conventional atomic and a p-wave molecular spinor-1 superfluidity at large positive and negative detunings, respectively, the system generically exhibits a finite momentum atomic-molecular superfluidity at intermediate detuning around the unitary point. We analyze the detailed nature of the corresponding phases and the associated quantum and thermal phase transitions.