Spherical Structures in Conformal Gravity and its Scalar-Tensor Extension
Abstract
We study spherically-symmetric structures in Conformal Gravity and in a scalar-tensor extension and gain some more insight about these gravitational theories. In both cases we analyze solutions in two systems: perfect fluid solutions and boson stars of a self-interacting complex scalar field. In the purely tensorial (original) theory we find in a certain domain of parameter space finite mass solutions with a linear gravitational potential but without a Newtonian contribution. The scalar-tensor theory exhibits a very rich structure of solutions whose main properties are discussed. Among them, solutions with a finite radial extension, open solutions with a linear potential and logarithmic modifications and also a (scalar-tensor) gravitational soliton. This may also be viewed as a static self-gravitating boson star in purely tensorial Conformal Gravity.
Keywords
Cite
@article{arxiv.0907.1951,
title = {Spherical Structures in Conformal Gravity and its Scalar-Tensor Extension},
author = {Y. Brihaye and Y. Verbin},
journal= {arXiv preprint arXiv:0907.1951},
year = {2010}
}
Comments
24 pages, revised version, accepted for publication in Phys. Rev. D