We report a new one-parameter family of spherically symmetric, inhomogeneous, and time-dependent solutions of the vacuum Brans-Dicke field equations which are conformal to the Roberts scalar field geometries of Einstein gravity. The new solution is spherical and time-dependent and contains a naked central singularity. We use it as a seed to generate another two-parameter family of solutions using a known symmetry of vacuum Brans-Dicke gravity.
Fahim, B.H., Faraoni, V., Giusti, A. (2021). Brans-Dicke analogue of the Roberts geometry. PHYSICAL REVIEW D, 103(8), 1-6 [10.1103/physrevd.103.084004].
Brans-Dicke analogue of the Roberts geometry
Andrea Giusti
2021
Abstract
We report a new one-parameter family of spherically symmetric, inhomogeneous, and time-dependent solutions of the vacuum Brans-Dicke field equations which are conformal to the Roberts scalar field geometries of Einstein gravity. The new solution is spherical and time-dependent and contains a naked central singularity. We use it as a seed to generate another two-parameter family of solutions using a known symmetry of vacuum Brans-Dicke gravity.File in questo prodotto:
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