期刊
PHYSICAL REVIEW D
卷 85, 期 8, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.85.087302
关键词
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资金
- STFC
- Oxford Martin School
- BIPAC
- Basque Government [AE-2010-1-31]
- Fundacion Pablo Garcia
- FUNDEC, Mexico
- Fondecyt (Chile) [1100282, 1090753]
- STFC [ST/I00193X/1] Funding Source: UKRI
- Science and Technology Facilities Council [ST/I00193X/1] Funding Source: researchfish
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 cosmological implications.
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