Dilatonic, Current-Carrying Cosmic String

Authors :: Ferreira, C. N.
Guimaraes, M. E. X.
Helayel-Neto, J. A.
Publication Year :: 1999
Publisher :: arXiv, 1999.
Abstract: We study the implications of a scalar-tensorial gravity for the metric of an isolated self-gravitating superconducting cosmic string. These modifications are induced by an arbitrary coupling of a massless scalar field to the usual tensorial field in the gravitational Lagrangian. We derive the metric in the weak-field approximation and we analyse the behaviour of light in this spacetime. We end with some discussions.<br />Comment: 12 pp, Latex, no figures, based on a talk given by M. E. X. Guimaraes at the COSMO 99, 27/9 to 02/10/99, ICTP, Trieste, It