Holographic renormalization for non-conformal branes, i.e. non-AdS/non-CFT systems, was systematically developed in this paper by Kanitscheider, Skenderis and Taylor. They even work it out for the example of the Witten model, which is the background of the Sakai-Sugimoto model.

The key principle that permits one to extend the formalism of holographic renormalization to non-conformal systems is the so-called generalized conformal structure. This can be understood as follows: if you extend conformal transformations in such a way that the coupling constant of the boundary Yang-Mills theory transforms like an operator of appropriate dimension, the theory possesses a (generalized) conformal invariance. This allows for an asymptotic Fefferman-Graham expansion and the construction of a renormalized action from which you can derive n-point functions.

Holographic renormalization for non-conformal branes, i.e. non-AdS/non-CFT systems, was systematically developed in this paper by Kanitscheider, Skenderis and Taylor. They even work it out for the example of the Witten model, which is the background of the Sakai-Sugimoto model.

The key principle that permits one to extend the formalism of holographic renormalization to non-conformal systems is the so-called generalized conformal structure. This can be understood as follows: if you extend conformal transformations in such a way that the coupling constant of the boundary Yang-Mills theory transforms like an operator of appropriate dimension, the theory possesses a (generalized) conformal invariance. This allows for an asymptotic Fefferman-Graham expansion and the construction of a renormalized action from which you can derive (renormalized) n-point functions.

Holographic renormalization for non-conformal branes, i.e. non-AdS/non-CFT systems, was systematically developed in this paper by Kanitscheider, Skenderis and Taylor. They even work it out for the example of the Witten model, which is the background of the Sakai-Sugimoto model.

The key principle that allows one to extend the formalism of holographic renormalization to non-conformal systems is the so-called generalized conformal structure. This can be understood as follows: if you extend conformal transformations in such a way that the coupling constant of the boundary Yang-Mills theory transforms like an operator of appropriate dimension, the theory possesses a (generalized) conformal invariance. This allows for an asymptotic Fefferman-Graham expansion and the construction of a renormalized action from which you can derive n-point functions.

Holographic renormalization for non-conformal branes, i.e. non-AdS/non-CFT systems, was systematically developed in this paper by Kanitscheider, Skenderis and Taylor. They even work it out for the example of the Witten model, which is the background of the Sakai-Sugimoto model.

The key principle that permits one to extend the formalism of holographic renormalization to non-conformal systems is the so-called generalized conformal structure. This can be understood as follows: if you extend conformal transformations in such a way that the coupling constant of the boundary Yang-Mills theory transforms like an operator of appropriate dimension, the theory possesses a (generalized) conformal invariance. This allows for an asymptotic Fefferman-Graham expansion and the construction of a renormalized action from which you can derive n-point functions.