Gravity in a Box
Joseph Lykken, Robert C. Myers, Jing Wang

TL;DR
This paper explores a hybrid brane-world model combining flat and anti-de Sitter spaces to analyze how resonant modes influence four-dimensional gravity and mode production, bridging different theoretical frameworks.
Contribution
It introduces a novel hybrid brane-world construction that interpolates between two prominent models and studies the effects of resonant and nonresonant modes on gravity.
Findings
Resonant modes affect four-dimensional gravity.
Enhanced production of nonresonant modes occurs on a probe brane.
The model connects different brane-world scenarios.
Abstract
We consider a brane-world construction which incorporates a finite region of flat space, ``the box,'' surrounded by a region of anti-de Sitter space. This hybrid construction provides a framework which interpolates between the scenario proposed by Arkani-Hamed, Dimopoulos and Dvali, and that proposed by Randall and Sundrum. Within this composite framework, we investigate the effects of resonant modes on four-dimensional gravity. We also show that, on a probe brane in the anti-de Sitter region, there is enhanced production of on-shell nonresonant modes. We compare our model to some recent attempts to incorporate the Randall-Sundrum scenario into superstring theory.
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