# Chern-Simons modified gravity and closed timelike curves

@article{Porfrio2016ChernSimonsMG, title={Chern-Simons modified gravity and closed timelike curves}, author={P. J. Porf́ırio and J. B. Fonseca-Neto and J R Nascimento and Albert Petrov and Jason Ricardo and A. F. Santos}, journal={Physical Review D}, year={2016}, volume={94}, pages={044044} }

We verify the consistency of the Godel-type solutions within the four-dimensional Chern-Simons modified gravity with the non-dynamical Chern-Simons coefficient, for different forms of matter including dust, fluid, scalar field and electromagnetic field, and the related causality issues. Unlike the general relativity, the vacuum solution turns out to be possible in our theory. Another essentially new result of our theory having no analogue in the general relativity consists in the existence of…

## 8 Citations

The origin of Chern-Simons modified gravity from an 11 + 3-dimensional manifold

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It is our aim to show that the Chern-Simons terms of modified gravity can be understood as generated by the addition of a 3-dimensional algebraic manifold to an initial 11-dimensional space-time…

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The hybrid metric-Palatini $$f({\mathscr {R}})$$f(R) gravity is a recently devised approach to modified gravity in which it is added to the metric Ricci scalar R, in the Einstein–Hilbert Lagrangian,…

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We generalize the Chern-Simons modified gravity to the metric-affine case and impose projective invariance by supplementing the Pontryagin density with homothetic curvature terms which do not spoil…

Gödel-type solutions in cubic Galileon gravity

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- 2020

We address the homogeneous in space and time (ST-homogeneous) G\"{o}del-type metrics within the cubic galileon theory, a particular class of generalized galileon theories. We check the consistency of…

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