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Review and theoretically characterize non-equilibrium BCS-BEC crossover physics and superfluid transitions in a strongly interacting, driven-dissipative two-component Fermi gas.

November 7, 2024AAPPS bulletinOpen Access

Non-equilibrium BCS-BEC crossover and unconventional FFLO superfluid in a strongly interacting driven-dissipative Fermi gas

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TKTaira KawamuraNihon University YOYoji OhashiUniversity of Fukui

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Theoretical analysis reveals non-equilibrium FFLO superfluid instability in driven-dissipative Fermi gases, highlighting new states driven by reservoir chemical potential differences.

Key Points

Review and theoretically characterize non-equilibrium BCS-BEC crossover physics and superfluid transitions in a strongly interacting, driven-dissipative two-component Fermi gas.
Applied the Schwinger-Keldysh Green's function technique to model a strongly interacting two-component Fermi gas coupled to two external particle reservoirs.
Tuned the reservoir chemical potential difference alongside the s-wave pairing interaction strength associated with a Feshbach resonance to explore steady-state phase behavior.
Imprinted a two-step structure on particle momentum distributions in the weak-coupling BCS regime via reservoir chemical potential differences.
Demonstrated an anomalous pseudogap enhancement and the emergence of an unconventional Fulde-Ferrell-Larkin-Ovchinnikov (FFLO)-type superfluid instability in non-equilibrium conditions.

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Kawamura et al. (2024) studied this question.

synapsesocial.com/papers/6a7013b53ce530166bc2b9ab https://doi.org/10.1007/s43673-024-00137-3

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Implication

Theoretical analysis reveals non-equilibrium FFLO superfluid instability in driven-dissipative Fermi gases, highlighting new states driven by reservoir chemical potential differences.

Non-equilibrium BCS-BEC crossover and unconventional FFLO superfluid in a strongly interacting driven-dissipative Fermi gas

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Cite This Study

Non-equilibrium BCS-BEC crossover and unconventional FFLO superfluid in a strongly interacting driven-dissipative Fermi gas

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Implication

Key Points

Cite This Study

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