Mechanisms for Radion Stabilization with Bulk Fields

The Randall-Sundrum model has been a great source of interest to theorists and phenomenologists for over two decades, both for its novel solution to the hierarchy problem, and its phenomenological consequences. The modulus field associated with the warped extra dimension of this model requires stabilization. A number of mechanisms have been considered in this effort; from the classic approach of Goldberger and Wise (hep-ph/9907447), to Casimir forces due to bulk matter & gauge fields (hep-th/0212227), to a TeV confining bulk gauge field (hep-th/1910.07546). In practice, each of these mechanisms will contribute simultaneously.

In this talk I will present ongoing work to investigate the feasibility of stabilizing the fifth dimension using only bulk fields that give rise to the expected standard model fields in the 4D effective theory on the IR brane. I will also discuss how the rate of the phase transition between the high and low temperature phases of the RS model is affected by the specific details of the radions dependence on the confinement scale of a bulk gauge field.