Many-body perturbation theory using the density-functional concept: beyond the GW approximation

Article, Preprint English OPEN
Bruneval, Fabien; Sottile, Francesco; Olevano, Valério; Del Sole, Rodolfo; Reining, Lucia;
(2005)
  • Publisher: American Physical Society
  • Identifiers: doi: 10.1103/PhysRevLett.94.186402
  • Subject: Condensed Matter - Other Condensed Matter | [PHYS.COND.CM-GEN]Physics [physics]/Condensed Matter [cond-mat]/Other [cond-mat.other]

We propose an alternative formulation of Many-Body Perturbation Theory that uses the density-functional concept. Instead of the usual four-point integral equation for the polarizability, we obtain a two-point one, that leads to excellent optical absorption and energy lo... View more
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