Theta dependence in holographic QCD

@article{Bartolini2016ThetaDI,
  title={Theta dependence in holographic QCD},
  author={Lorenzo Bartolini and Francesco Bigazzi and Stefano Bolognesi and Aldo L. Cotrone and Andrea Manenti},
  journal={Journal of High Energy Physics},
  year={2016},
  volume={2017},
  pages={1-55}
}
A bstractWe study the effects of the CP-breaking topological θ-term in the large Nc QCD model by Witten, Sakai and Sugimoto with Nf degenerate light flavors. We first compute the ground state energy density, the topological susceptibility and the masses of the lowest lying mesons, finding agreement with expectations from the QCD chiral effective action. Then, focusing on the Nf = 2 case, we consider the baryonic sector and determine, to leading order in the small θ regime, the related… 
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