Gravitational collapse in f (R) gravity for a spherically symmetric spacetime admitting a homothetic Killing vector
Department of Physical Sciences, Indian Institute of Science Education and Research, Kolkata Mohanpur Campus, 741252, West Bengal, India
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Accepted: 6 April 2016
Published online: 10 May 2016
The gravitational collapse of a spherical distribution, in a class of f (R) theories of gravity, where f (R) is a power function of R , is discussed. The spacetime is assumed to admit a homothetic Killing vector. In the collapsing modes, some of the situations indeed hit a singularity, but they are all covered with an apparent horizon. Some peculiar cases are observed where the collapsing body settles to a constant radius at a given value of the radial coordinate.
© Società Italiana di Fisica and Springer-Verlag Berlin Heidelberg, 2016