Conformal Windows of SU(N) Gauge Theories, Higher Dimensional Representations and The Size of The Unparticle World

  title={Conformal Windows of SU(N) Gauge Theories, Higher Dimensional Representations and The Size of The Unparticle World},
  author={Thomas A. Ryttov and Francesco Sannino},
  journal={Physical Review D},
We present the conformal windows of SU(N) supersymmetric and nonsupersymmetric gauge theories with vectorlike matter transforming according to higher irreducible representations of the gauge group. We determine the fraction of asymptotically free theories expected to develop an infrared fixed point and find that it does not depend on the specific choice of the representation. This result is exact in supersymmetric theories while it is an approximate one in the nonsupersymmetric case. The… 

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