QCD Quark Condensate from SUSY and the Orientifold Large-N Expansion

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 alpha_s(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.

15 pages, LaTex

References in corpus (2)

• SUSY Relics in One-Flavor QCD from a New 1/N Expansion
• The Cosmological Constant and Domain Walls in Orientifold Field Theories and N=1 Gluodynamics

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