Is de Sitter space always excluded in semiclassical f (R) gravity?

Roberto Casadio,Andrea Giugno,Andrea Giusti,Valerio Faraoni

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS（2019）

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摘要

It is shown that the recent corpuscular description of gravity generically excludes de Sitter spacetime in any semiclassical version of f (R) gravity. A phantom phenomenology of the cosmic dynamics is also naturally excluded.

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关键词

modified gravity,physics of the early universe,cosmology of theories beyond the SM

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