Testing metric-affine f(R)-gravity by relic scalar gravitational waves

Details Testing metric-affine f(R)-gravity by relic scalar gravitational waves Testing metric-affine f(R)-gravity by relic scalar gravitational waves

2010-07-21

arxiv.org/abs/1007.3670v1

Eur.Phys.J.C70:341-349,2010

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

12 pages, 4 figures

Scientific paper

10.1140/epjc/s10052-010-1412-5

We discuss the emergence of scalar gravitational waves in metric-affine f(R)-gravity. Such a component allows to discriminate between metric and metric-affine theories The intrinsic meaning of this result is that the geodesic structure of the theory can be discriminated. We extend the formalism of cross correlation analysis, including the additional polarization mode, and calculate the detectable energy density of the spectrum for cosmological relic gravitons. The possible detection of the signal is discussed against sensitivities of VIRGO, LIGO and LISA interferometers.

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