Wormholes and Time-Machines in Nonminimally Coupled Matter-Curvature
Theories of Gravity [PDF]
Orfeu Bertolami, Ricardo Zambujal FerreiraIn 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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