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Curvature Singularities from Gravitational Contraction in f(R) Gravity
release_uatiyjcahjhcxkbpr5tninggsa
by
Lorenzo Reverberi
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as a article
.
2013
Abstract
The discovery of the accelerated expansion of the Universe has had a vast
resonance on a number of physical disciplines. In recent years several viable
modified gravity models have been proposed, which naturally lead to a late-time
de Sitter stage while basically reducing to General Relativity in the early
Universe. We consider a contracting cloud of pressureless dust, having
arbitrary mass and initial density, and discuss some aspects of these modified
gravity models. We show how the increasing energy/mass density may lead to a
curvature singularity and discuss the typical timescales for its development.
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1212.2870v5
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