Observation of the Sign Reversal of the Magnetic Correlation in a Driven-Dissipative Fermi Gas in Double Wells

Kantaro, Honda,; Taie, Shintaro; Takasu, Yoshio; Nishizawa, Naoki; Nakagawa, Masaya; Takahashi, Yoshiro

doi:10.1103/physrevlett.130.063001

Cited by 22 publications

(2 citation statements)

References 33 publications

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“…The boundary conditions for the fermions are modified according to Eq. (10). Thus we need to relate the Fourier modes of the fermions with periodic boundary conditions to the ones with anti-periodic boundary conditions.…”

Section: A One-body Lossesmentioning

confidence: 99%

“…Cold atom experiments involve various loss processes, for instance one-body losses resulting from scattering with background thermal atoms [2], which can be significant. Inelastic two-body collisions can occur naturally or be intentionally engineered, leading to two-body losses [3][4][5][6][7][8][9][10]. Three-body losses, where a highly bound diatomic molecule is formed, are invariably present and typically dominate the overall loss process [11][12][13].…”

Section: Introductionmentioning

confidence: 99%

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Gradient corrections to the local-density approximation in the one-dimensional Bose gas

et al. 2022

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Section: A One-body Lossesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Gradient corrections to the local-density approximation in the one-dimensional Bose gas

et al. 2022

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

Kawamura,

Ohashi

2024

AAPPS Bull.

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We present a theoretical review of the recent progress in non-equilibrium BCS (Bardeen-Cooper-Schrieffer)-BEC (Bose-Einstein condensation) crossover physics. As a paradigmatic example, we consider a strongly interacting driven-dissipative two-component Fermi gas where the non-equilibrium steady state is tuned by adjusting the chemical potential difference between two reservoirs that are coupled with the system. As a powerful theoretical tool to deal with this system, we employ the Schwinger-Keldysh Green’s function technique. We systematically evaluate the superfluid transition, as well as the single-particle properties, in the non-equilibrium BCS-BEC crossover region, by adjusting the chemical potential difference between the reservoirs and the strength of an s-wave pairing interaction associated with a Feshbach resonance. In the weak-coupling BCS side, the chemical potential difference is shown to imprint a two-step structure on the particle momentum distribution, leading to an anomalous enhancement of pseudogap, as well as the emergence of exotic Fulde-Ferrell-Larkin-Ovchinnikov-type superfluid instability. Since various non-equilibrium situations have recently been realized in ultracold Fermi gases, the theoretical understanding of non-equilibrium BCS-BEC crossover physics would become increasingly important in this research field.

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Floquet states

Tsuji

2024

Encyclopedia of Condensed Matter Physics

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Observation of the Sign Reversal of the Magnetic Correlation in a Driven-Dissipative Fermi Gas in Double Wells

Cited by 22 publications

References 33 publications

Gradient corrections to the local-density approximation in the one-dimensional Bose gas

Gradient corrections to the local-density approximation in the one-dimensional Bose gas

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

Floquet states

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