Towards holographic walking from N=4 super Yang-Mills

Details Towards holographic walking from N=4 super Yang-Mills Towards holographic walking from N=4 super Yang-Mills

2010-12-21

arxiv.org/abs/1012.4678v1

Physics

High Energy Physics

High Energy Physics - Theory

Latex, 53 pages

Scientific paper

We propose that a holographic description of `walking' behaviour, namely quasi-conformal dynamics relevant for technicolor models, can be obtained from relevant deformations of N=4 super Yang-Mills. We consider deformations which drive the theory close to the N=1 Leigh-Strassler fixed point, eventually deviating from it in the deep IR. We use the Pilch-Warner dual supergravity description of the flow between the N=4 and the N=1 fixed points to focus on observables that only require knowledge of the walking region. These include large anomalous dimensions of quark bilinear operators, which we study via probe D7-branes. We also make a first attempt at describing the theory beyond the walking region by introducing an infrared cut-off, in the spirit of hard-wall models. In this case we find a light, dilaton-like scalar state, but whether this mode persists in the exact theory remains an open question.

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