Strong-coupling expansion in the large-N limit

Néstor Parga, Doug Toussaint, José R. Fulco

Research output: Contribution to journalArticlepeer-review

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 - 1979

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)


Dive into the research topics of 'Strong-coupling expansion in the large-N limit'. Together they form a unique fingerprint.

Cite this