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Spherically symmetric closed universe as an example of a 2D dilatonic model
Phys. Rev. D 59, 104014 – Published 22 April, 1999
DOI: https://doi.org/10.1103/PhysRevD.59.104014
Abstract
We study a two-dimensional dilatonic model describing a massless scalar field minimally coupled to the spherically reduced Einstein-Hilbert gravity. The general solution of this model is given in the case when a Killing vector is present. When interpreted in four dimensions, the solution describes either a static or a homogeneous collision of incoming and outgoing null dust streams with spherical symmetry. The homogeneous universe is closed.
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