MG13 - Talk detail |
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Participant |
Gal'tsov, Dmitry | |||||||
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Institution |
Moscow State University - Vorobievy gory, 1 - Moscow - Moscow - Russia | |||||||
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Session |
ST1 |
Accepted |
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Order |
Time |
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Talk |
Oral abstract |
Title |
Bremsstrahlung at transplanckian scattering | |||||
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Abstract |
Various approaches to calculate gravitational radiation at transplanckian collisions in the models of TeV-scale gravity are reviewed and compared. Multidimensional generalization of the fast-motion formalism of General Relativity is used to compute radiation from ultrarelativistic point-like partons colliding in D-dimensional Minkowski space or in the brane/bulk models. The radiation efficiency is shown to grow with the number d of extra dimensions due to increasing phase space for emitted Kaluza-Klein modes and for d>2 becomes of the order of unity for impact parameters far away from gravitational radius of the collision energy. Classical and quantum limitation of validity of this result are discussed. |
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