Gravitational scattering in the ADD model at high and low energies |
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Authors: | G Gustafson M Sjödahl |
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Institution: | 1. Department of Theoretical Physics, Lund University, S?lvegatan 14A, 22362, Lund, Sweden 2. School of Physics and Astronomy, University of Manchester, Oxford Road, Manchester, M13 9PL, UK
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Abstract: | Gravitational scattering in the ADD model is considered at both sub- and transplanckian energies using a common formalism.
By keeping a physical cut-off in the KK tower associated with virtual KK exchange, such as the cut-off implied by a finite
brane width, troublesome divergences are removed from the calculations in both energy ranges. The scattering behavior depends
on three different energy scales: the fundamental Planck mass, the collision energy and the inverse brane width. The result
for energies low compared to the effective cut-off (inverse brane width) is a contact-like interaction. At high energies the
gravitational scattering associated with the extra dimensional version of Newton’s law is recovered. |
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