The rise of a tensor instability in Eddington-inspired gravity
- In this work an extension to Eddington's gravitational action is analyzed. We consider the tensor perturbations of a FLRW space-time in the Eddington regime in where the tensor mode is linearly unstable deep and the resulting modifications to Einstein regime are quite strong.
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2 pages, to appear in the Proceedings of the 13th Marcel Grossman
Meeting (Stockholm, Sweden, July 1-7 2012), invited talk at the Parallel
Session AT4 "Modify Gravity"
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