In chiral SU(N) gauge theories with mixed one- and two-index matter, the CFL-phase coset topology yields no Skyrmions yet permits stable heavy baryons protected by unbroken symmetries, unlike vector-like models; theta anomalies on domain walls are matched without extra light modes when color is full
Quark Condensate in Massless QCD from Planar Equivalence
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abstract
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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Baryons, Skyrmions and $\theta$-periodicity anomaly in chiral and vector-like gauge theories
In chiral SU(N) gauge theories with mixed one- and two-index matter, the CFL-phase coset topology yields no Skyrmions yet permits stable heavy baryons protected by unbroken symmetries, unlike vector-like models; theta anomalies on domain walls are matched without extra light modes when color is full