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

@inproceedings{Debbio2007SUNGT,
  title={SU(N) gauge theories in the presence of a topological term},
  author={Luigi Del Debbio and H. Panagopoulos and Ettore Vicari Supa and School of Cosmic Physics and University of Edinburgh and Department of Engineering Physics and University of Cyprus and University of Pisa},
  year={2007}
}
We review recent results on the θ dependence of the ground-state energy and spectrum of four-dimensional SU(N) gauge theories, where θ is the coefficient of the CP-violating topological term F 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 θ dependence around θ = 0 by determining the moments of the topological charge distribution, and their correlations with other observables. The… 
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