Large-Nc and Large-NF Limits of SU(Nc) Gauge Theories with Fermions in Different Representations

Sudhakantha Girmohanta*, Thomas A. Ryttov, Robert Shrock

*Corresponding author for this work

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We present calculations of certain limits of scheme-independent series expansions for the anomalous dimensions of gauge-invariant fermion bilinear operators and for the derivative of the beta function at an infrared fixed point in SU(Nc) gauge theories with fermions transforming according to two different representations. We first study a theory with Nf fermions in the fundamental representation and Nf′ fermions in the adjoint or symmetric or antisymmetric rank-2 tensor representation, in the limit Nc→∞, Nf→∞ with Nf/Nc fixed and finite. We then study the Nc→∞ limit of a theory with fermions in the adjoint and rank-2 symmetric or antisymmetric tensor representations.

Original languageEnglish
Article number116022
JournalPhysical Review D
Issue number11
Number of pages14
Publication statusPublished - Jun 2019


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