Evaluation of the optical conductivity tensor in terms of contour integrations

László Szunyogh, Peter Weinberger

Research output: Conference article

27 Citations (Scopus)


For the case of finite lifetime broadening the standard Kubo formula for the optical conductivity tensor is rederived in terms of Green's functions by using contour integrations, whereby finite temperatures are accounted for by using the Fermi-Dirac distribution function. For zero lifetime broadening, the present formalism is related to expressions well known in the literature. Numerical aspects of how to calculate the corresponding contour integrals are also outlined.

Original languageEnglish
Pages (from-to)10451-10458
Number of pages8
JournalJournal of Physics Condensed Matter
Issue number50
Publication statusPublished - dec. 20 1999
EventProceedings of the CECAM Workshop on Effective Interactions and Phase Transitions in Colloidal Suspensions - Lyon, France
Duration: jún. 28 1999jún. 30 1999

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

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