Dark energy and modified gravity

Details Dark energy and modified gravity Dark energy and modified gravity

Aug 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008aipc.1040...18t&link_type=abstract

KEK COSMOPHYSICS GROUP INAUGURAL CONFERENCE ``ACCELERATORS IN THE UNIVERSE'': Interplay between High Energy Physics and Cosmophy

Other

Astronomical Observations, Dark Matter, Dark Energy, Origin And Formation Of The Universe, Higher-Dimensional Gravity And Other Theories Of Gravity, Supernova Remnants, Background Radiations

Scientific paper

The current accelerated expansion of the Universe may originate from some modification of gravitational theories. We derive the conditions under which f(R) DE models are cosmologically viable, where f(R) is a function of the Ricci scalar R. We study the evolution of the equation of state of DE, matter perturbations and local gravity constraints in such models and discuss methods to distinguish modified gravity models from the ΛCDM cosmology.

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