Dilatonic, Current-Carrying Cosmic String

Details Dilatonic, Current-Carrying Cosmic String Dilatonic, Current-Carrying Cosmic String

1999-10-06

arxiv.org/abs/gr-qc/9910021v1

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

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

Scientific paper

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.

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