Dynamics of a self-gravitating thin string in scalar-tensor theories of gravitation

Details Dynamics of a self-gravitating thin string in scalar-tensor theories of gravitation Dynamics of a self-gravitating thin string in scalar-tensor theories of gravitation

1997-06-09

arxiv.org/abs/gr-qc/9706020v1

Class.Quant.Grav. 14 (1997) 3063-3071

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

10 pages, latex, no figures

Scientific paper

10.1088/0264-9381/14/11/008

We examine the dynamics of a self-gravitating string in the scalar-tensor theories of gravitation by considering a thin tube of matter to describe it. For a class of solutions, we obtain in the generic case that the extrinsic curvature of the world sheet of the central line is null in the limit where the radius of the string tends to zero. However, if we impose a specific constraint on the behaviour of the solution then we find that only the mean curvature of the world sheet of the central line vanishes which is just the Nambu-Goto dynamics. This analysis can include the massless dilatonic theories of gravity.

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