Laplace-transformed diagonal Dyson correction to quasiparticle energies in periodic systems

Ramiro Pino, Gustavo E. Scuseria

Research output: Contribution to journalArticlepeer-review

18 Scopus citations

Abstract

A method to self-consistently evaluate quasiparticle energies and pole strengths of periodic systems within diagonal approximation for solving Dyson's equation, was described. The method was found to be based on the Laplace transform of second-order MØller-Plesset perturbation (MP2) theory kernel in atomic basis formulation. MP2 accounts for long-range van der Waals dispersion interactions and it is self-interaction free, which makes it accurate and reliable, albeit substantially more expensive computationally. The interchain interactions affect the band gap in a sizeable manner such that MP2 band gap of two interacting trans-polyacetylene chains is reduced to 0.5 eV.

Original languageEnglish (US)
Pages (from-to)2553-2557
Number of pages5
JournalJournal of Chemical Physics
Volume121
Issue number6
DOIs
StatePublished - Aug 8 2004

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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