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Exact gravitational shockwaves and Planckian scattering on branes Emparan García de Salazar, Roberto A. Gravetat quàntica Teories del camp unificat Relativitat general (Física) Teoria de Kaluza-Klein Quantum gravity Unified field theories Relativitat general (Física) Kaluza-Klein theories We obtain a solution describing a gravitational shock wave propagating along a Randall-Sundrum brane. The interest of such a solution is twofold: on the one hand, it is the first exact solution for a localized source on a Randall-Sundrum three-brane. On the other hand, one can use it to study forward scattering at Planckian energies, including the effects of the continuum of Kaluza-Klein modes. We map out the different regimes for the scattering obtained by varying the center-of-mass energy and the impact parameter. We also discuss exact shock waves in ADD scenarios with compact extra dimensions. 2010-05-06T09:26:57Z 2010-05-06T09:26:57Z 2001 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Reproducció digital del document publicat en format paper, proporcionada per PROLA i http://dx.doi.org/10.1103/PhysRevD.64.024025 Physical Review D, 2001, vol. 64, núm. 2, p. 024025-1-024025-9 http://dx.doi.org/10.1103/PhysRevD.64.024025 (c) The American Physical Society, 2001 info:eu-repo/semantics/openAccess The American Physical Society Articles publicats en revistes (Física de la Matèria Condensada)