SU(N) gauge theories in the presence of a topological term

Details SU(N) gauge theories in the presence of a topological term SU(N) gauge theories in the presence of a topological term

2007-06-11

arxiv.org/abs/0706.1479v2

J.Phys.Conf.Ser.110:122005,2008

Physics

High Energy Physics

High Energy Physics - Theory

18 pages, presentation at the HEP2007 Conference, Manchester, 7/2007. A couple of references added

Scientific paper

10.1088/1742-6596/110/12/122005

We review recent results on the theta dependence of the ground-state energy and spectrum of four-dimensional SU(N) gauge theories, where theta is the coefficient of the CP-violating topological term F-Fdual in the Lagrangian. In particular, we discuss the results obtained by Monte Carlo simulations of the lattice formulation of QCD, which allow the investigation of theta dependence around theta=0 by determining the moments of the topological charge distribution, and their correlations with other observables. The results for N=3 and larger values of N support the scenario obtained by general large-N scaling arguments.

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