English

Towards holographic walking from N=4 super Yang-Mills

High Energy Physics - Theory 2015-05-20 v1 High Energy Physics - Phenomenology

Abstract

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.

Keywords

Cite

@article{arxiv.1012.4678,
  title  = {Towards holographic walking from N=4 super Yang-Mills},
  author = {S. Prem Kumar and David Mateos and Angel Paredes and Maurizio Piai},
  journal= {arXiv preprint arXiv:1012.4678},
  year   = {2015}
}

Comments

Latex, 53 pages