New exact vacuum solutions in Brans-Dicke theory
19976 pages
Published in:
- Mod.Phys.Lett.A 12 (1997) 1865-1870
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Abstract: (WSP)
A family of exact solutions to vacuum Brans–Dicke theory with spherical symmetry is found. In the limit of large ω this family reduces to the solutions obtained in general relativity with a scalar field. The solutions show curvature singularities for all times, therefore they do not represent the gravitational collapse of a physical system with regular initial data in the theory. One would like to interpret it as an inhomogeneous dynamical cosmology, but the lack of a regular spacelike slice forbids it. For a special value of an integration constant we have an isotropic cosmological model without the problems mentioned above.- Brans-Dicke model
- field equations: solution
- vacuum state
- cosmological model
- space-time: singularity
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