Quark Condensate in Massless QCD from Planar Equivalence

Details Quark Condensate in Massless QCD from Planar Equivalence Quark Condensate in Massless QCD from Planar Equivalence

2005-11-11

arxiv.org/abs/hep-ph/0511143v1

Nucl.Phys. B740 (2006) 23-35

Physics

High Energy Physics

High Energy Physics - Phenomenology

18 pages, LaTex. 1 figure

Scientific paper

10.1016/j.nuclphysb.2006.01.044

A previous estimate of the quark condensate in one-flavour massless QCD from the known value of the gluino condensate in super Yang-Mills (SYM) theory is extended to Nf >1 by considering the large-N limit of an SU(N) gauge theory with one flavour in the antisymmetric representation and nf = Nf -1 extra flavours in the fundamental representation. We argue that, even at nf> 0, suitably chosen correlators in this theory can be mapped to those of SYM as N--> infinity. We give arguments why this correspondence should be particularly good for Nf =3 and compare our prediction with available (real and Monte Carlo) data.

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