Strong-coupling expansion in the large-N limit

Néstor Parga, Doug Toussaint, José R. Fulco

Research output: Contribution to journalArticle

14 Scopus citations


We study a strong-coupling expansion of a 4 quantum field theory with an O(N) internal symmetry. For large values of N we observe that there is a critical point in 2<D<4 dimensions and recover the known results for the two-point and the four-point Green's functions near the critical point, and for the critical exponent.

Original languageEnglish (US)
Pages (from-to)887-894
Number of pages8
JournalPhysical Review D
Issue number4
StatePublished - Jan 1 1979
Externally publishedYes


ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)

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