Anomaly Cancellation and Conformality in Quiver Gauge Theories
نویسنده
چکیده
Abelian quiver gauge theories provide nonsupersymmetric candidates for the conformality approach to physics beyond the standard model. Written asN = 0, U(N) gauge theories, however, they have mixed U(1)pU(1) 2 q and U(1)pSU(N) 2 q triangle anomalies. It is shown how to construct explicitly a compensatory term ∆Lcomp which restores gauge invariance of Leff = L+∆Lcomp under U(N). It can lead to a negative contribution to the U(1) β-function and hence to one-loop conformality at high energy for all dimensionless couplings.
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