An Unparticle Solution to the Hierarchy Problem

          @misc{ pirsa_PIRSA:10050014,
            doi = {10.48660/10050014},
            url = {https://pirsa.org/10050014},
            author = {Setzer, Nick},
            keywords = {Particle Physics},
            language = {en},
            title = {An Unparticle Solution to the Hierarchy Problem},
            publisher = {Perimeter Institute},
            year = {2010},
            month = {may},
            note = {PIRSA:10050014 see, \url{https://pirsa.org}}
          }
          

Abstract

The Planck-weak hierarchy is investigated in an extradimensional, soft-wall model originally proposed by Batell and Gherghetta. In this model the soft-wall is dynamically generated by background fields that, in the Einstein frame, cause the metric factor to deviate from anti-de Sitter by a power-law of the conformal coordinate. This talk will demonstrate that in order to achieve the appropriate Planck-weak hierarchy, the power of the conformal coordinate must be less than one. This in turn implies that the gravitational sector contains scalar fields that act like unparticles without a mass gap.