Radiation from Accelerated Branes
Abstract
The radiation emitted by accelerated fundamental strings and D-branes is studied within the linear approximation to the supergravity limit of string theory. We show that scalar, gauge field and gravitational radiation is generically emitted by such branes. In the case where an external scalar field accelerates the branes, we derive a Larmor-type formula for the emitted scalar radiation and study the angular distribution of the outgoing energy flux. The classical radii of the branes are calculated by means of the corresponding Thompson scattering cross sections. Within the linear approximation, the interaction of the external scalar field with the velocity fields of the branes gives a contribution to the observed gauge field and gravitational radiation.
Keywords
Cite
@article{arxiv.hep-th/9909148,
title = {Radiation from Accelerated Branes},
author = {Mohab Abou-Zeid and Miguel S. Costa},
journal= {arXiv preprint arXiv:hep-th/9909148},
year = {2009}
}
Comments
LaTeX, 25 pages, 2 figures; v2: added comments on the validity of the linear approximation, minor changes; version to appear in Physical Review D