Abstract
We propose a new radion stabilization mechanism in the Randall-Sundrum spacetime, introducing a bulk SU(NH) gauge field which confines at a TeV scale. It turns out that the radion is stabilized by the balance between a brane tension and a pressure due to the Casimir energy of the strong SU(NH) gauge field. We investigate the phase transition between the Randall-Sundrum (compactified) spacetime and a de-compactified spacetime and determine the parameter regime in which eternal (old) inflation is avoided and the phase transition can be completed. In comparison to the Goldberger-Wise mechanism, the 5D Planck mass can be larger than the AdS curvature and a classical description of the gravity is reliable in our stabilization mechanism. We also discuss the effect of the phase transition in cosmology such as an entropy dilution and a production of gravitational waves.
Highlights
Hand to realize an adequate redshift factor
We propose a new radion stabilization mechanism in the Randall-Sundrum spacetime, introducing a bulk SU(NH ) gauge field which confines at a TeV scale
We have proposed a new radion stabilization mechanism in the RS model and investigated dynamics of the phase transition between the AdS-S spacetime and the RS spacetime
Summary
We first review basic properties of the RS model [1]. The effective action of the radion is summarized. We explain our radion stabilization mechanism with a bulk Yang-Mills gauge field.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have