Signatures of Strong Correlations in One-Dimensional Ultra-Cold Atomic Fermi Gases

Abstract

Recent success in manipulating ultra-cold atomic systems allows to probe different strongly correlated regimes in one-dimension. Regimes such as the (spin-coherent) Luttinger liquid and the spin-incoherent Luttinger liquid can be realized by tuning the inter-atomic interaction strength and trap parameters. We identify the noise correlations of density fluctuations as a robust observable (uniquely suitable in the context of trapped atomic gases) to discriminate between these two regimes. Finally, we address the prospects to realize and probe these phenomena experimentally using optical lattices.

arXiv comment4 pages, 2 figures

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Cited by in corpus (5)

• Spin-charge separation in a 1D Fermi gas with tunable interactions
• Paired states in spin-imbalanced atomic Fermi gases in one dimension
• Spectral properties of a spin-incoherent Luttinger Liquid
• Thermal disruption of a Luttinger liquid
• Singular responses of spin-incoherent Luttinger liquids