http://arxiv.org/abs/1801.01274
In the context of $f\left( R\right) $-gravity with a spatially flat FLRW metric containing an ideal fluid, we use the method of invariant transformations to specify families of models which are integrable. We find three families of $f(R)$ theories for which new analytical solutions are given and closed-form solutions are provided.
G. Papagiannopoulos, S. Basilakos, J. Barrow, et. al.
Mon, 8 Jan 18
97/117
Comments: 14 pages, 2 figures, to appear in Physical Review D
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