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arXiv · 1604.03874

Gravitational waves in the $f(R,T)$ theory of gravity

M. E. S. Alves·P. H. R. S. Moraes·J. C. N. de Araujo·M. Malheiro
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Abstract

There is a host of alternative theories of gravitation in the literature, among them the $f(R,T)$ recently elaborated by Harko and collaborators. In these theories the $R$ and $T$ are respectively the Ricci scalar and the trace of the energy momentum tensor. There is already in literature a series of studies of different forms of the $f(R,T)$ functions as well as their cosmological consequences. However, there is not so far in the literature studies related to the gravitational waves in $f(R,T)$ gravity. Here we consider such an issue, in particular studying the putative extra polarization models that can well appear in such theories. To do that, we consider different functional forms for $f(R,T)$.

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M. E. S. Alves, P. H. R. S. Moraes, J. C. N. de Araujo, M. Malheiro. 2016-04-12. Gravitational waves in the $f(R,T)$ theory of gravity. https://doi.org/10.1103/physrevd.94.024032

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