Toward a systematic 1/d expansion: Two-particle properties

Gergely Zaránd, Gergely Zaránd, Daniel L. Cox, Avraham Schiller

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

We present a procedure to calculate 1/d corrections to two-particle properties around the infinite-dimensional dynamical mean-field limit. Our method is based on a modified version of the scheme of Schiller and Ingersent (Ref. 7), where the cancellation of overcounted diagrams is assured at each iteration step. We test our method on the half-filled Hubbard model using the fluctuation exchange approximation. To within numerical accuracy, we find stable, causal solutions for which 1/d corrections to the local correction are relatively small.

Original languageEnglish
Article numberR16227
Pages (from-to)R16227-R16230
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume62
Issue number24
DOIs
Publication statusPublished - Dec 15 2000

    Fingerprint

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this