Variations of Infinite Derivative Modified Gravity
arXiv:1902.08820 · doi:10.1007/978-981-13-2715-5_5
Abstract
We consider nonlocal modified Einstein gravity without matter, where nonlocal term has the form . For this model, in this paper we give the derivation of the equations of motion in detail. This is not an easy task and presented derivation should be useful to a researcher who wants to investigate nonlocal gravity. Also, we present the second variation of the related Einstein-Hilbert modified action and basics of gravity perturbations.
22 pages
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