High-energy string-brane scattering: leading eikonal and beyond

Details High-energy string-brane scattering: leading eikonal and beyond High-energy string-brane scattering: leading eikonal and beyond

2010-08-27

arxiv.org/abs/1008.4773v2

JHEP 1011:100,2010

Physics

High Energy Physics

High Energy Physics - Theory

40 pages, 5 figures, v2: minor corrections, new appendix with a discussion of the Feynman diagrams contributing to the scatter

Scientific paper

10.1007/JHEP11(2010)100

We extend previous techniques for calculations of transplanckian-energy string-string collisions to the high-energy scattering of massless closed strings from a stack of N Dp-branes in Minkowski spacetime. We show that an effective non-trivial metric emerges from the string scattering amplitudes by comparing them against the semiclassical dynamics of high-energy strings in the extremal p-brane background. By changing the energy, impact parameter and effective open string coupling, we are able to explore various interesting regimes and to reproduce classical expectations, including tidal-force excitations, even beyond the leading-eikonal approximation.

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