S Capozziello et al 2007 Class. Quantum Grav. 24 6417 doi:10.1088/0264-9381/24/24/015
S Capozziello1, R Cianci2, C Stornaiolo1 and S Vignolo2
Show affiliationsThe role of torsion in f(R) gravity is considered in the framework of metric-affine formalism. We discuss the field equations in empty space and in the presence of perfect fluid matter, taking into account the analogy with the Palatini formalism. As a result, the extra curvature and torsion degrees of freedom can be dealt as an effective scalar field of a fully geometric origin. From a cosmological point of view, such a geometric description could account for the whole dark side of the universe.
83C05 Einstein's equations (general structure, canonical formalism, Cauchy problems)
Issue 24 (21 December 2007)
Received 22 August 2007, in final form 15 October 2007
Published 29 November 2007
S Capozziello et al 2007 Class. Quantum Grav. 24 6417
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