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Theory Seminar (High Energy/Cosmology)
The Dilaton, the Radion, and Duality
Date: Friday, October 4th
Time: 2:00 pm
Place: 5280 Chamberlin Hall
Speaker: Zackaria Chacko, University of Maryland
Abstract: I consider scenarios where strong conformal dynamics constitutes the ultraviolet completion of the physics that drives electroweak symmetry breaking. I identify the circumstances under which the dilaton can remain light, and construct the effective theory of the light dilaton in this framework. The form of the dilaton couplings to Standard Model states is determined, and corrections from conformal symmetry violating effects are shown to be under good theoretical control in theories where the dilaton is light. I then show how the same results emerge from extra dimensional warped constructions, with the dilaton identified as the radion, as expected from the AdS/CFT correspondence.
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