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GR: Gravitation und Relativitätstheorie

GR 6: Gravitationswellen, experimentelle Tests

GR 6.1: Fachvortrag

Freitag, 28. März 2003, 14:20–14:40, A310

Will VIRGO see RIGOs? — Radion-induced graviton oscillations in the two-brane world — •Andreas Rathke^1,2, Andrei O. Barvinsky³, Alexander Yu. Kamenshchik⁴, and Claus Kiefer¹ — ¹Institut für Theoretische Physik, Universität zu Köln, Zülpicher Str. 77, 50937 Köln — ²Fakultät für Mathematik und Physik, Physikalisches Institut, Universität Freiburg, Hermann-Herder-Str. 3, 79104 Freiburg — ³Theory Department, Lebedev Physics Institute, Leninsky Pr. 53, Moskau 117924, Rußland — ⁴Landau Network — Centro Volta, Villa Olmo, via Cantoni 1, 22100 Como, Italien

One of the most interesting features of braneworld models is the existence of massive gravitational modes in addition to the usual massless one. Mixing of the modes which depends nontrivially on the inter-brane distance called the radion field can be interpreted as radion-induced gravitational-wave oscillations, a classical analogy to meson and neutrino oscillations. We show that these oscillations arising in M-theory-inspired two-brane setups could lead to effects detectable by gravitational-wave interferometers.