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A tensor instability in the Eddington inspired Born-Infeld Theory of Gravity

PHYSICAL REVIEW D, no. 8 (2012)

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In this paper, we consider an extension to Eddington's proposal for the gravitational action. We study tensor perturbations of a homogeneous and isotropic space-time in the Eddington regime, where modifications to Einstein gravity are strong. We find that the tensor mode is linearly unstable deep in the Eddington regime and discuss its co...更多

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