General Relativity and Gravitation vol. 36, no. 7, pp. 1671 - 1678
Indexed
SCI; SCIE; SCOPUS
Document Type
Conference Paper
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 a 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.