arXiv subjects

Ricardo Zambujal Ferreira

Publications and source records attributed to Ricardo Zambujal Ferreira.

2 recordsLinked to original sources

arXiv2013

Wormholes and Time-Machines in Nonminimally Coupled Matter-Curvature Theories of Gravity

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.

hep-th↗

arXiv2012

Traversable Wormholes and Time Machines in non-minimally coupled curvature-matter $f(R)$ theories

We obtain traversable wormhole and time machine solutions of the field equations of an alternative of gravity with non-minimally curvature-matter coupling. Our solutions exhibit a non-trivial redshift function and allow for matter that satisfy the dominant energy condition.

gr-qc↗