Exact cosmological black hole solutions in Scalar Tensor Vector Gravity. (arXiv:1905.08274v1 [gr-qc])
<a href="http://arxiv.org/find/gr-qc/1/au:+Perez_D/0/1/0/all/0/1">Daniela Pérez</a>, <a href="http://arxiv.org/find/gr-qc/1/au:+Romero_G/0/1/0/all/0/1">Gustavo E. Romero</a>
We find an exact solution of Scalar-Tensor-Vector Gravity field equations
that represents a black hole embedded in an expanding universe. This is the
first solution of the kind found in the theory. We analyze the properties of
the apparent horizons as well as the essential singularities of the metric, and
compare it with the McVittie spacetime of General Relativity. Depending on the
cosmological model adopted and the value of the free parameter $alpha $ of the
theory, the solution describes a cosmological black hole, an inhomogeneity in
an expanding universe, or a naked singularity. We use the latter result to set
further constraints on the free parameters of the theory.
We find an exact solution of Scalar-Tensor-Vector Gravity field equations
that represents a black hole embedded in an expanding universe. This is the
first solution of the kind found in the theory. We analyze the properties of
the apparent horizons as well as the essential singularities of the metric, and
compare it with the McVittie spacetime of General Relativity. Depending on the
cosmological model adopted and the value of the free parameter $alpha $ of the
theory, the solution describes a cosmological black hole, an inhomogeneity in
an expanding universe, or a naked singularity. We use the latter result to set
further constraints on the free parameters of the theory.
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