English

Axially symmetric and static solutions of Einstein equations with self-gravitating scalar field

General Relativity and Quantum Cosmology 2018-11-09 v2

Abstract

The exact axisymmetric and static solution of the Einstein equations coupled to axisymmetric and static gravitating scalar (or phantom) field is presented. The spacetimes modified by the scalar field are explicitly given for the so called γ\gamma-metric and Erez-Rosen metric with quadrupole moment qq, influence of the additional deformation parameters γ\gamma_* and qq_* generated by the scalar field is studied. It is shown that the null energy condition is satisfied for the phantom field, but it is not satisfied for the standard scalar field. The test particle motion in the both modified γ\gamma-metric and Erez-Rosen quadrupole metric is studied; the circular geodesics are determined, and near-circular trajectories are explicitly presented for characteristic values of the spacetime parameters. It is also demonstrated that the parameters γ\gamma_* and qq_* have no influence on the test particle motion in the equatorial plane.

Keywords

Cite

@article{arxiv.1810.01460,
  title  = {Axially symmetric and static solutions of Einstein equations with self-gravitating scalar field},
  author = {Bobur Turimov and Bobomurat Ahmedov and Martin Kološ and Zdeněk Stuchlík},
  journal= {arXiv preprint arXiv:1810.01460},
  year   = {2018}
}

Comments

16 pages, 9 figures