3 years ago

Godel Metrics with Chronology Protection in Horndeski Gravities.

H. Lu, Hao Wei, Wei-Jian Geng, Shou-Long Li

G\"odel universe, one of the most interesting exact solutions predicted by General Relativity, describes a homogeneous rotating universe containing naked closed time-like curves (CTCs). It was shown that such CTCs are the consequence of the null energy condition in General Relativity. In this paper, we show that the G\"odel-type metrics with chronology protection can emerge in Einstein-Horndeski gravity. We construct such exact solutions also in Einstein-Horndeski-Maxwell and Einstein-Horndeski-Proca theories.

Publisher URL: http://arxiv.org/abs/1801.00009

DOI: arXiv:1801.00009v2

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