Conformal or walking? Monte Carlo renormalization group studies of SU(3) gauge models with fundamental fermions
- Department of Physics, University of Colorado, Boulder, Colorado 80309 (United States)
Strongly coupled gauge systems with many fermions are important in many phenomenological models. I use the 2-lattice matching Monte Carlo renormalization group method to study the fixed point structure and critical indexes of SU(3) gauge models with 8 and 12 flavors of fundamental fermions. With an improved renormalization group block transformation I am able to connect the perturbative and confining regimes of the N{sub f}=8 flavor system, thus verifying its QCD-like nature. With N{sub f}=12 flavors the data favor the existence of an infrared fixed point and conformal phase, though the results are also consistent with very slow walking. I measure the anomalous mass dimension in both systems at several gauge couplings and find that they are barely different from the free-field value.
- OSTI ID:
- 21410051
- Journal Information:
- Physical Review. D, Particles Fields, Vol. 82, Issue 1; Other Information: DOI: 10.1103/PhysRevD.82.014506; (c) 2010 The American Physical Society; ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
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