We review recent progress in studying mesons within gauge/gravity duality, in the context of
adding flavour degrees of freedom to generalizations of the AdS/CFT correspondence. Our …

We present a holographic dual of four-dimensional, large N c QCD with massless flavors.
This model is constructed by placing Nf probe D8-branes into a D4 background, where …

We review results concerning the θ dependence of 4D SU (N) gauge theories and QCD,
where θ is the coefficient of the CP-violating topological term in the Lagrangian. In particular …

We consider a general framework to study holographically the dynamics of fundamental
quarks in a confining gauge theory. Flavors are introduced by placing a set of (coincident) …

The holographic model of V-QCD is used to analyze the physics of QCD in the Veneziano
large-N limit. An unprecedented analysis of the CP-odd physics is performed going beyond …

We estimate the consequences of finite masses of pseudoscalar mesons on the decay rates
of scalar glueballs in the Witten-Sakai-Sugimoto model, a top-down holographic model of …

We construct backreacted D3/D7 supergravity backgrounds which are dual to four-
dimensional Script N= 1 and Script N= 2 supersymmetric Yang-Mills at large N c with flavor …

We study systematically the open string modes of a general class of BPS intersections of
branes. We work in the approximation in which one of the branes is considered as a probe …

In the string holographic dual of large-N c QCD with N f flavours of [1], the η'meson is
massless at infinite N c and dual to a collective fluctuation of N f D6-brane probes in a …

We revisit the U (1) A anomaly in the holographic model of low-energy QCD by Witten,
Sakai, and Sugimoto, presenting a new and direct derivation of the Witten-Veneziano …