Universality of testing ghost-free gravity

Edholm, James and S. Koshelev, Alexey and Mazumdar, Anupam (2016) Universality of testing ghost-free gravity. Physical Review D, 94 (10): 104033. ISSN 1550-7998

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Abstract

In this paper we show that there is a universal prediction for the Newtonian potential for an infinite derivative, ghost-free, quadratic curvature gravity. We show that in order to make such a theory ghost-free at a perturbative level, the Newtonian potential always falls-off as 1/r in the infrared limit, while at short distances the potential becomes non-singular. We provide examples which can potentially test the scale of gravitational non-locality up to 0.01 eV.