Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2001-11-19
Phys.Rev.D65:084030,2002
Physics
High Energy Physics
High Energy Physics - Theory
22 pages, LaTeX, presented at the "XXII - Encontro Nacional de Fisica de Particulas e Campos", Sao Lourenco, MG, Brazil
Scientific paper
10.1103/PhysRevD.65.084030
We obtain the solution that corresponds to a screwed superconducting cosmic string (SSCS) in the framework of a general scalar-tensor theory including torsion. We investigate the metric of the SSCS in Brans-Dicke theory with torsion and analyze the case without torsion. We show that in the case with torsion the space-time background presents other properties different from that in which torsion is absent. When the spin vanish, this torsion is a $\phi$-gradient and then it propagates outside of the string. We investigate the effect of torsion on the gravitational force and on the geodesics of a test-particle moving around the SSCS. The accretion of matter by wakes formation when a SSCS moves with speed $v $ is investigated. We compare our results with those obtained for cosmic strings in the framework of scalar-tensor theory.
Bezerra Valdir B.
Ferreira Cristine N.
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