Gravity on a little warped space
Abstract
We investigate the consistent inclusion of 4D Einstein gravity on a truncated slice of AdS_{5} whose bulkgravity and UV scales are much less than the 4D Planck scale, M_{*}≪M_{Pl}. Such “Little Warped Spaces” have found phenomenological utility and can be motivated by string realizations of the RandallSundrum framework. Using the interval approach to braneworld gravity, we show that the inclusion of a large UVlocalized EinsteinHilbert term allows one to consistently incorporate 4D Einstein gravity into the lowenergy theory. We detail the spectrum of KaluzaKlein metric fluctuations and, in particular, examine the coupling of the little radion to matter. Furthermore, we show that GoldbergerWise stabilization can be successfully implemented on such spaces. Our results demonstrate that realistic lowenergy effective theories can be constructed on these spaces, and have relevance for existing models in the literature.
 Publication:

Physical Review D
 Pub Date:
 September 2011
 DOI:
 10.1103/PhysRevD.84.064007
 arXiv:
 arXiv:1107.0755
 Bibcode:
 2011PhRvD..84f4007G
 Keywords:

 04.50.Cd;
 KaluzaKlein theories;
 High Energy Physics  Phenomenology;
 General Relativity and Quantum Cosmology;
 High Energy Physics  Theory
 EPrint:
 1+24 pages