Towards holographic walking from N=4 super Yang-Mills

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.

Latex, 53 pages

References in corpus (14)

• Light scalar at LHC: the Higgs or the dilaton?
• A Light Dilaton in Walking Gauge Theories
• AdS/CFT correspondence and Geometry
• Glueballs vs. Gluinoballs: Fluctuation Spectra in Non-AdS/Non-CFT
• Phenomenology of a light scalar: the dilaton
• Techni-dilaton at Conformal Edge
• Conformal Dynamics for TeV Physics and Cosmology
• Light scalars from a compact fifth dimension
• Holographic Techni-dilaton
• Electroweak Symmetry Breaking from Gauge/Gravity Duality
• Lattice studies of QCD-like theories with many fermionic degrees of freedom
• Unquenched flavor in the gauge/gravity correspondence
• Technicolor Signals at the LHC
• N=1 supersymmetric solutions of IIB supergravity

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• On the glueball spectrum of walking backgrounds from wrapped-D5 gravity duals
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