Graviton oscillations in the two-brane world
نویسندگان
چکیده
We study the braneworld effective action in the two-brane RandallSundrum model. In the framework of this essentially-nonlocal 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. In recent years the old Kaluza-Klein idea of a world with additional dimensions has received new impacts from string-inspired attempts to resolve the [email protected] [email protected] [email protected] [email protected]
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