Metric-affine $f(R)$-gravity with torsion: an overview

Details Metric-affine $f(R)$-gravity with torsion: an overview Metric-affine $f(R)$-gravity with torsion: an overview

2009-10-27

arxiv.org/abs/0910.5230v1

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

10 pages, Grassmann Meeting 2009, Annalen der Physik

Scientific paper

Torsion and curvature could play a fundamental role in explaining cosmological dynamics. f(R)-gravity with torsion is an approach aimed to encompass in a comprehensive scheme all the Dark Side of the Universe (Dark Energy and Dark Matter). We discuss the field equations in empty space and in presence of perfect fluid matter taking into account the analogy with the metric-affine formalism. The result is that the extra curvature and torsion degrees of freedom can be dealt under the standard of an effective scalar field of fully geometric origin. The initial value problem for such theories is also discussed.

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