Gravity on a Little Warped Space

Abstract

We investigate the consistent inclusion of 4D Einstein gravity on a truncated slice of AdS_5 whose bulk-gravity 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 Randall-Sundrum framework. Using the interval approach to brane-world gravity, we show that the inclusion of a large UV-localized Einstein-Hilbert term allows one to consistently incorporate 4D Einstein gravity into the low-energy theory. We detail the spectrum of Kaluza-Klein metric fluctuations and, in particular, examine the coupling of the little radion to matter. Furthermore, we show that Goldberger-Wise stabilization can be successfully implemented on such spaces. Our results demonstrate that realistic low-energy effective theories can be constructed on these spaces, and have relevance for existing models in the literature.

1+24 pages

References in corpus (12)

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Cited by in corpus (11)

• A rapid holographic phase transition with brane-localized curvature
• Di-photon portal to warped gravity
• KK Gravitons at LHC2
• Spin-2 KK Mode Scattering in Models with a Massive Radion
• Sommerfeld Enhancement from Multiple Mediators
• Regarding the Radion in Randall-Sundrum Models with Brane Curvature
• Composite Dark Matter and Neutrino Masses from a Light Hidden Sector
• Implications of diphoton searches for a Radion in the Bulk-Higgs Scenario
• Warped Graviton Couplings to Bulk Vectors with Brane Localised Kinetic Terms
• A closed clockwork theory: ${\mathbb{Z}}_2$ parity and more
• Scattering amplitudes in the Randall-Sundrum model with brane-localized curvature terms