Graviton oscillations in the two-brane world
Abstract
We study the braneworld effective action in the two-brane Randall-Sundrum model. In the framework of this essentially-non-local action we reveal the origin of an infinite sequence of gravitational wave modes—the usual massless one as well as the tower of Kaluza-Klein massive ones. Mixing of the modes, which parametrically depends on the background value of the modulus of the extra dimension, can be interpreted as radion-induced gravitational-wave oscillations, a classical analogue to meson and neutrino oscillations. We show that these oscillations arising in M-theory-inspired braneworld setups could lead to effects detectable by gravitational-wave interferometers.
- Publication:
-
Physics Letters B
- Pub Date:
- October 2003
- DOI:
- 10.1016/j.physletb.2003.06.002
- arXiv:
- arXiv:hep-th/0212015
- Bibcode:
- 2003PhLB..571..229B
- Keywords:
-
- High Energy Physics - Theory;
- General Relativity and Quantum Cosmology
- E-Print:
- 8 pages, conceptual clarifications included, to appear in Phys. Lett. B