Phase-diagram and dynamics of Rydberg-dressed fermions in two-dimensions

Abstract

We investigate the ground-state properties and the collective modes of a two-dimensional two-component Rydberg-dressed Fermi liquid in the dipole-blockade regime. We find instability of the homogeneous system toward phase separated and density ordered phases, using the Hartree-Fock and random-phase approximations, respectively. The spectral weight of collective density oscillations in the homogenous phase also signals the emergence of density-wave instability. We examine the effect of exchange-hole on the density-wave instability and on the collective mode dispersion using the Hubbard local-field factor.

arXiv comment7 pages, 6 figures, submitted

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Cited by in corpus (7)

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• Resonant stroboscopic Rydberg dressing: electron-motion coupling and multi-body interactions
• Rydberg-dressed Fermi liquid: correlations and signatures of droplet crystallization
• Multipolar Fermi-surface deformation in a Rydberg-dressed Fermi gas with long-range anisotropic interactions
• Fast spin squeezing by distance-selective long-range interactions with Rydberg molecule dressing
• Density and pseudo-spin rotons in a bilayer of soft-core bosons