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Speaker |
Benetti, Micol |
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Coauthors |
Santos da Costa, Simony; Capozziello, Salvatore; Alcaniz, Jailson; De Laurentis, Mariafelicia |
| Talk Title |
Observational constraints on Gauss-Bonnet cosmology |
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Abstract |
In this talk I will show the study of a fully geometric approach to dark energy in the framework of F(R,G) theories of gravity, considering a class with power law solutions. We found that, depending on the value of the geometrical parameter, a shift in the anisotropy peaks position of the temperature power spectrum is produced, as well as an increasing in the matter power spectrum amplitude. We performed a MCMC analysis using both Cosmic Microwave Background (CMB) and Joint Light-Curve Analysis data, combined with the current local measurements of the Hubble value, H0, and galaxy data. I will show that such a model can describe the CMB data with slightly high H0 values, and the prediction on the amplitude matter spectrum value is proved to be in accordance with the observed matter distribution of the universe. At the same time, the value constrained for the geometric parameter implies a density evolution of such a components that is growing with time. |
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