Nonsingular Chaplygin gas cosmologies in universes connected by wormhole

Abstract

We present some exact solutions of the Einstein equations with an anisotropic fluid exploiting the Chaplygin equation of state. The solutions describe spacetimes with two identical T regions and an intermediate static spherically symmetric R region containing a wormhole. The metric in the T region represents an anisotropic Kantowski-Sachs cosmological model. Its evolution starts from an event horizon and develops according to different scenarios including eternal expansion, contraction and also a finite universe lifetime.

14 pages, 9 figures

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Cited by in corpus (2)

• Wormhole solutions in $f(R)$ gravity theory for Chaplygin gas scenario
• Some unusual wormholes in general relativity