Simulating Artificial 1D Physics with Ultra‐Cold Fermionic Atoms: Three Exemplary Themes

Dobrzyniecki, Jacek; Sowiński, Tomasz

doi:10.1002/qute.202000010

Cited by 8 publications

(4 citation statements)

References 235 publications

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“…It is argued that systems with reduced dimensionality (particularly one-dimensional systems) may serve as a promising bypassing platforms for FFLO detection 20 – 27 . For recent reviews see 28 , 29 . The universal nature of such correlations in different number of spatial dimensions can be seen through the variety of physical systems that are studied.…”

Section: Introductionmentioning

confidence: 99%

Unconventional pairing in few-fermion systems at finite temperature

Pęcak

Sowiński

2022

Sci Rep

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Attractively interacting two-component mixtures of fermionic particles confined in a one-dimensional harmonic trap are investigated. Properties of balanced and imbalanced systems are systematically explored with the exact diagonalization approach, focusing on the finite-temperature effects. Using single- and two-particle density distributions, specific non-classical pairing correlations are analyzed in terms of the noise correlations—quantity directly accessible in state-of-the-art experiments with ultra-cold atoms. It is shown that along with increasing temperature, any imbalanced system hosting Fulde–Ferrel–Larkin–Ovchinnikov pairs crossovers to a standard Bardeen-Cooper-Schrieffer one characterized by zero net momentum of resulting pairs. By performing calculations for systems with different imbalances, the approximate boundary between the two phases on a phase diagram is determined.

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Section: Introductionmentioning

confidence: 99%

Unconventional pairing in few-fermion systems at finite temperature

Pęcak

Sowiński

2022

Sci Rep

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“…It is argued that systems with reduced dimensionality (particularly one-dimensional systems) may serve as a promising bypassing platforms for FFLO detection [20][21][22][23][24][25][26][27]. For recent reviews see [28,29].…”

Section: Introductionmentioning

confidence: 99%

Unconventional pairing in few-fermion systems at finite temperature

Pęcak¹,

Sowiński²

2022

Preprint

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Attractively interacting two-component mixtures of fermionic particles confined in a onedimensional harmonic trap are investigated. Properties of balanced and imbalanced systems are systematically explored with the exact diagonalization approach, focusing on the finite-temperature effects. Using single-and two-particle density distributions, specific nonclassical pairing correlations are analyzed in terms of the noise correlations -quantity directly accessible in state-of-the-art experiments with ultra-cold atoms. It is shown that along with increasing temperature, any imbalanced system hosting Fulde-Ferrel-Larkin-Ovchinnikov pairs crossovers to a standard Bardeen-Cooper-Schrieffer one characterized by zero net momentum of resulting pairs. By performing calculations for systems with different imbalances, the approximate boundary between the two phases on a phase diagram is determined.

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“…The high degree of control over cold-atom setups has allowed experimentalists to generate asymmetries in the spin populations [67][68][69][70][71], making such systems ideal for observing the elusive unconventional pairing mechanism * jsilvav@unal.edu.co named after Fulde, Ferrell, Larkin, and Ovchinnikov (FFLO) [72,73]. However, the effect of spin population imbalance on Bose-Fermi mixtures has been barely explored.…”

Section: Introductionmentioning

confidence: 99%

Spin-selective insulators in Bose-Fermi mixtures

Guerrero-Suarez,

Mendoza-Arenas,

Franco

et al. 2020

Preprint

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We investigate an imbalanced mixture composed of two-color fermions and scalar bosons in the hard-core limit, considering repulsive and attractive interspecies and intraspecies interactions. The interplay between commensurability, repulsive interactions and imbalance generates three insulating phases: a mixed Mott state and two spin-selective insulators characterized by the commensurability relations ρB + ρ ↑,(↓) F = 1. For an attractive coupling between fermions and bosons, we found the relations ρB − ρ ↑,(↓) F = 0 for the spin-selective insulators. State-of-the-art cold-atoms setups constitute ideal platforms to implement these unveiled insulating states and verify their commensurability relations.

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Simulating Artificial 1D Physics with Ultra‐Cold Fermionic Atoms: Three Exemplary Themes

Cited by 8 publications

References 235 publications

Unconventional pairing in few-fermion systems at finite temperature

Unconventional pairing in few-fermion systems at finite temperature

Unconventional pairing in few-fermion systems at finite temperature

Spin-selective insulators in Bose-Fermi mixtures

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