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arXiv · 1706.03222

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

Reyhaneh Khasseh·Saeed H. Abedinpour·B. Tanatar
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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.

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Reyhaneh Khasseh, Saeed H. Abedinpour, B. Tanatar. 2017-06-10. Phase-diagram and dynamics of Rydberg-dressed fermions in two-dimensions. https://doi.org/10.1103/physreva.96.053611

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