Exotic superfluid states of lattice fermions in elongated traps

TL;DR

This paper uses real-space dynamical mean-field theory to study superfluid states of lattice fermions in elongated traps, revealing a critical polarization and unconventional superfluid structures including FFLO-type states.

Contribution

It provides new insights into superfluid phases and critical polarization in elongated trap geometries using advanced theoretical calculations.

Findings

Critical polarization is 0.8, independent of trap elongation.

Unconventional superfluid structures emerge below the critical polarization.

Polarized superfluid and FFLO-type states are found across the entire core region.

Abstract

We present real-space dynamical mean-field theory calculations for attractively interacting fermions in three-dimensional lattices with elongated traps. The critical polarization is found to be 0.8, regardless of the trap elongation. Below the critical polarization, we find unconventional superfluid structures where the polarized superfluid and Fulde-Ferrell-Larkin-Ovchinnikov-type states emerge across the entire core region.