Effective Lagrangians for linearized gravity in Randall-Sundrum model

Details Effective Lagrangians for linearized gravity in Randall-Sundrum model Effective Lagrangians for linearized gravity in Randall-Sundrum model

2001-05-30

arxiv.org/abs/hep-th/0105304v3

Physics

High Energy Physics

High Energy Physics - Theory

14 pages, LaTex, no figures, corrected typos

Scientific paper

We construct the second variation Lagrangian for Randall-Sundrum model with two branes, study its gauge invariance, find the corresponding equations of motion and decouple them. We also derive an effective Lagrangian for this model in the unitary gauge, which describes a massless graviton, massive gravitons and a massless scalar radion. It is shown that the mass spectra of these fields and their couplings to the matter are different on different branes.

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