Gravity beyond linear perturbations in the braneworld

Details Gravity beyond linear perturbations in the braneworld Gravity beyond linear perturbations in the braneworld

2002-05-12

arxiv.org/abs/gr-qc/0205046v2

Prog.Theor.Phys.Suppl.148:145-157,2003

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

12 pages, typos corrected, Proceedings for YITP workshop "Braneworld -Dynamics of spacetime boundary -"

Scientific paper

10.1143/PTPS.148.145

In the present paper, we briefly review recent studies of second-order gravitational perturbations in braneworld models. After we consider the possibility of pathological behavior of gravity at higher orders of perturbation, second-order perturbations are discussed in Randall-Sundrum braneworld models. Because the mass spectra in these braneworld models are different, we analyze them using different approaches. In the respective models, it is discussed that 4D Einstein gravity is approximately recovered at level of second-order perturbation, although there are some exceptional cases in the two-brane model.

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