Superfluid properties of one-component Fermi gas with an anisotropic p-wave interaction

TL;DR

This paper studies superfluidity in a one-component Fermi gas with anisotropic p-wave interactions, analyzing transition temperatures and phase transitions, revealing how anisotropy affects superfluid properties and phase stability.

Contribution

It provides a theoretical analysis of superfluid transition temperatures and phase transitions in anisotropic p-wave Fermi gases using Gaussian fluctuation theory, highlighting the effects of anisotropy.

Findings

Anisotropy enhances the superfluid transition temperature $T_c$ in strong coupling.

Anisotropy suppresses the phase transition temperature $T_0$ from $p_x$-wave to $p_x+ip_y$-wave.

The phase transition from $p_x$-wave to $p_x+ip_y$-wave occurs below $T_c$.

Abstract

We investigate superfluid properties and strong-coupling effects in a one-component Fermi gas with an anisotropic p-wave interaction. Within the framework of the Gaussian fluctuation theory, we determine the superfluid transition temperature $T_{\rm c}$, as well as the temperature $T_0$ at which the phase transition from the $p_x$-wave pairing state to the $p_x+ip_y$-wave state occurs below $T_{\rm c}$. We also show that while the anisotropy of the p-wave interaction enhances $T_{\rm c}$ in the strong-coupling regime, it suppresses $T_0$.