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 G0W 0 calculations concerning quasiparticle properties over a broad density region (1≤rs10) and show that, near the Fermi surface, vertex corrections and self-consistency aspects almost cancel each other out. © 2011 American Physical Society.

Momentum distribution of the homogeneous electron gas

PIERLEONI, CARLO;
2011

Abstract

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 G0W 0 calculations concerning quasiparticle properties over a broad density region (1≤rs10) and show that, near the Fermi surface, vertex corrections and self-consistency aspects almost cancel each other out. © 2011 American Physical Society.
File in questo prodotto:
File Dimensione Formato  
PhysRevLett.107.110402.pdf

non disponibili

Licenza: Non specificato
Dimensione 201.85 kB
Formato Adobe PDF
201.85 kB Adobe PDF   Visualizza/Apri   Richiedi una copia

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11697/9191
Citazioni
  • ???jsp.display-item.citation.pmc??? 2
  • Scopus 56
  • ???jsp.display-item.citation.isi??? 53
social impact