Non-Hermitian modification of pairing and crossover physics

Characterize how non-Hermiticity modifies pairing symmetry, triplet correlations, and BCS-BEC crossover physics in spin-orbit-coupled Fermi gases subject to dissipation.

Background

The paper studies a two-dimensional Rashba spin-orbit-coupled Fermi gas with spin-selective one-body loss, modeled using a non-Hermitian mean-field framework. Although prior work has examined non-Hermitian s-wave and p-wave pairing, the authors identify the combined effects of non-Hermiticity and synthetic spin-orbit coupling as insufficiently understood. In particular, the unresolved issue concerns how dissipation changes the symmetry of the pairing state, the induced equal-spin triplet components, and the behavior of the BCS-BEC crossover. The paper subsequently analyzes these effects within its specific model, but the broader characterization is presented as unclear in the introduction.