Journal
PHYSICAL REVIEW LETTERS
Volume 107, Issue 11, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.107.110402
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- IIT [259 SIMBEDD]
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We calculate the off-diagonal density matrix of the homogeneous electron gas at zero temperature using unbiased reptation Monte Carlo calculations for various densities and extrapolate the momentum distribution and the kinetic and potential energies to the thermodynamic limit. Our results on the renormalization factor allow us to validate approximate G(0)W(0) calculations concerning quasiparticle properties over a broad density region (1 <= r(s) less than or similar to 10) and show that, near the Fermi surface, vertex corrections and self-consistency aspects almost cancel each other out.
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