QCD quark condensate from SUSY and the orientifold large-N expansion

A. Armoni, M. Shifman, G. Veneziano

Research output: Contribution to journalArticle

60 Scopus citations

Abstract

We estimate the quark condensate in one-flavor massless QCD from the known value of the gluino condensate in SUSY Yang-Mills theory using our newly proposed "orientifold" large-N expansion. The numerical result for the quark condensate renormalized at the scale 2 GeV is then given as a function of αS (2 GeV) and of possible corrections from sub-leading terms. Our value can be compared with the quark condensate in (quenched) lattice QCD or with the one extracted from the Gell-Mann-Oakes-Renner relation by virtue of non-lattice determinations of the quark masses. In both cases we find quite a remarkable agreement.

Original languageEnglish (US)
Pages (from-to)384-390
Number of pages7
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume579
Issue number3-4
DOIs
StatePublished - Jan 22 2004

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