Khasseh, R.Abedinpour, S. H.Tanatar, Bilal2018-04-122018-04-1220172469-9926http://hdl.handle.net/11693/37140We 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.EnglishApproximation algorithmsFermi liquidsGround stateCollective modesDensity oscillationsGround state propertiesHomogeneous systemLocal-field factorsOrdered phasisRandom phase approximationsSpectral weightHartree approximationArticle10.1103/PhysRevA.96.053611