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VOLUME 85 (2007) | ISSUE 1 | PAGE 9
Is Strong Gravitational Radiation predicted by TeV-Gravity?
PACS: 04.50.+h, 04.30.-w, 11.25.-w
Abstract
In TeV-gravity models the gravitational coupling to particles with energies {\cal E} \sim m_{Pl} \sim 10 TeV is not suppressed by powers of ultra-small ratio {\cal E}/M_{Pl} with M_{Pl} \sim 10^{19} GeV. Therefore one could imagine strong synchrotron radiation of gravitons by the accelerating particles to become the most pronounced manifestation of TeV-gravity at LHC. However, this turns out to be not true: considerable damping continues to exist, only the place of {\cal E}/M_{Pl} it taken by a power of a ratio \vartheta\omega/{\cal E}, where the typical frequency ω of emitted radiation, while increased by a number of γ-factors, can not reach {\cal E}/\vartheta unless particles are accelerated by nearly critical fields. Moreover, for currently available magnetic fields B \sim 10 T, multi-dimensionality does not enhance gravitational radiation at all even if TeV-gravity is correct.