# 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…

## 22 Citations

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We extend the holographic analysis of light-baryon spectrum in [50] to the case involving the heavy flavors. With the construction of the Witten-Sakai-Sugimoto model in the D0D4 background, we use…

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The theta-dependent gauge theories can be studied by using holographic duality through string theory on certain spacetimes. Via this correspondence we consider a stack of $N_{0}$ dynamical D0-branes…

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We compute the electric dipole moment (EDM) of the deuteron in the holographic QCD model of Witten-Sakai-Sugimoto. Previously, the leading contribution to the EDM of nucleons was computed, finding…

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- PhysicsThe European physical journal. C, Particles and fields
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Numerically the results of simple hard-wall holographic QCD models point to larger contributions from axial vector mesons than assumed previously, while the predicted contributions from pseudo-Goldstone bosons agree nicely with data-driven approaches.

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