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Approximate black holes from a variable cosmological constant

Maurice H. P. M. van Putten
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Abstract

The small or zero cosmological constant, $Λ$, probably results from a macroscopic cancellation mechanism of the zero-point energies. However, nearby horizon surfaces any macroscopic mechanism is expected to result in imperfect cancellations. A phenomenological description is given for the residual variable cosmological constant. In the static, spherically symmetric case it produces approximate black holes. The model describes the case of exponential decay by $\Box\lnΛ=-3a$, were $a$ is a positive constant.

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Maurice H. P. M. van Putten. 1998-04-27. Approximate black holes from a variable cosmological constant. https://arxiv.org/abs/gr-qc/9802004

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