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July 15, 2026iScienceOpen Access

Non-Hermitian topological superfluidity in a three-dimensional Fermi gas with spin-orbit coupling

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Authors

PZPingcheng ZhuLZLihong ZhouJZJianxin Zhong

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Overview

Randomized trial explores superfluidity properties in Fermi gases, indicating rich pairing phenomena.

Key Points

  • This work aims to explore the effects of non-Hermitian potentials and spin-orbit coupling in a two-component Fermi gas.
  • Investigated a three-dimensional cubic lattice system with Rashba spin-orbit coupling and complex interactions due to two-body loss.
  • Utilized non-Hermitian mean-field theory to assess the interplay between dissipation and SOC.
  • Introduced a Zeeman field to explore the transition to a topological superfluid phase.
  • Dissipation drives a phase transition from superfluid to normal state and induces a reentrant superfluid phase.
  • The stability regions of normal and metastable superfluid phases are significantly expanded under the influence of SOC and dissipation.
  • A Zeeman field transforms the system into a topological superfluid phase characterized by a nontrivial topological invariant.

Cite This Study

Zhu et al. (2026) studied this question.

synapsesocial.com/papers/6a5722be88b21df87547fb00https://doi.org/10.1016/j.isci.2026.116686
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