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arXiv · gr-qc/0404037

Cosmological evolution of a ghost scalar field

S. V. Sushkov·S. -W. Kim
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Abstract

We consider a scalar field with a negative kinetic term minimally coupled to gravity. We obtain an exact non-static spherically symmetric solution which describes a wormhole in cosmological setting. The wormhole is shown to connect two homogeneous spatially flat universes expanding with acceleration. Depending on the wormhole's mass parameter $m$ the acceleration can be constant (the de Sitter case) or infinitely growing.

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S. V. Sushkov, S. -W. Kim. 2004-04-08. Cosmological evolution of a ghost scalar field. https://doi.org/10.1023/b%3Agerg.0000032159.46106.63

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