Dilaton and axion bremsstrahlung from collisions of cosmic (super)strings
arXiv:hep-th/0612271 · doi:10.1088/1751-8113/40/25/S49
Abstract
We calculate dilaton and axion radiation generated in the collision of two straight initially unexcited strings and give a rough cosmological estimate of dilaton and axion densities produced via this mechanism in the early universe.
7 pages, to appear in Proceedings of the 2nd International conference On quantum theories and renormalization group in gravity and cosmology (IRGAC 2006), 11-15 Jul 2006, Barcelona, Spain