Article

# An overview of f(R) theories

07/2011;
Source: arXiv

ABSTRACT

A brief introduction to theories of the gravitational field with a Lagrangian
that is a function of the scalar curvature is given. The emphasis will be
placed in formal developments, while comparison to observation will be
discussed in the chapter by S. Jor\'as in this volume.

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Available from: Santiago E. Perez-Bergliaffa
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• "It seems well proven that the universe is experiencing an acceleration process [1] [2] [3]. Physicists have elaborated various answers [4] to explain this accelerated state, among them, the following may be mentioned: the existence of a new kind of energy (called 'dark energy' that we could consider to include Einstein's famous cosmological constant) [5], matter creation [6] [7] [8] [9], and a whole set of theories that modify or go beyond the General Theory of Relativity, such as F(R) [10]. The problem in elucidating what is really happening resides in the current data and the precision with which they are obtained. "
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No preview · Article · May 2013