Radion dynamics in multibrane Randall-Sundrum model
arXiv:2211.11601 · doi:10.22323/1.414.0437
Abstract
The radion in the Randall-Sundrum model is stabilized by the back reaction of a bulk scalar field with its VEV depending on the fifth dimensional coordinate. We studied the radion dynamics in an extended scenario, where intermediate branes exist between the UV and IR branes. Our analysis proves that the formalism of EFT delivers the same equations of motion as the linearized Einstein equation with all junction conditions satisfied. The relic of 5d diffeomorphism is broken after including the Goldberger-Wise stabilization and a unique radion field is conjectured as legitimate in the RS metric perturbation.
arXiv comment6 pages and 1 figure; The proceeding paper for talk presented at the 41st International Conference on High Energy Physics (ICHEP2022), 6-13 July, 2022, Bologna, Italy
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