1997/06/09 by B. Boisseau, B. Linet
Physics and Astronomy · #Black Holes and Theoretical Physics #Cosmology and Gravitation Theories #Pulsars and Gravitational Waves Research #gr-qc
paper · pdf · doi:10.1088/0264-9381/14/11/008
published as Class.Quant.Grav. 14 (1997) 3063-3071 · 10 pages, latex, no figures
arxiv created 1997/06/09 · openalex publication_date 1997/11/01 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/30
We examine the dynamics of a self-gravitating string in the scalar - tensor theories of gravitation by considering it to be described by a thin tube of matter. For a class of solutions, we obtain in the generic case that the extrinsic curvature of the worldsheet 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 worldsheet of the central line vanishes, which is just the Nambu - Goto dynamics. This analysis can include the massless dilatonic theories of gravity.