Density-dependent effective action for electron systems

J. Polonyi, K. Sailer

Research output: Contribution to journalArticle

Abstract

The density-dependent effective action is introduced as the generalization of the density functional. The one-loop approximation offers an iterative, perturbative solution of the Hartree-Fock equations by turning on the Coulomb interaction gradually. A renormalization group evolution equation for the density-dependent effective action is proposed, enabling one to systematically improve the description of the nonrelativistic electron system beyond the one-loop level.

Original languageEnglish
Pages (from-to)181-191
Number of pages11
JournalInternational Journal of Quantum Chemistry
Volume92
Issue number2 SPEC.
DOIs
Publication statusPublished - Mar 15 2003

Keywords

  • Density functional theory
  • Effective action
  • Hartree-Fock equations
  • Nonrelativistic electron system
  • Renormalization group

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Physical and Theoretical Chemistry

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