Friday, March 1, 2013

1302.7125 (Orfeu Bertolami et al.)

Wormholes and Time-Machines in Nonminimally Coupled Matter-Curvature
Theories of Gravity
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Orfeu Bertolami, Ricardo Zambujal Ferreira
In this work we show the existence of traversable wormhole and time-machine solutions in a modified theory of gravity where matter and curvature are nonminimally coupled. Those solutions present a nontrivial redshift function and exist even in the presence of ordinary matter which satisfies the dominant energy condition.
View original: http://arxiv.org/abs/1302.7125

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