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astro-ph2005
Cosmological constraints on f(R) gravity theories within the Palatini approach
M. Amarzguioui, O. Elgaroy, D. F. Mota +1
We investigate f(R) theories of gravity within the Palatini approach and show how one can determine the expansion history, H(a), for an arbitrary choice of f(R). As an example, we…
astro-ph2003
The Integrated Sachs-Wolfe effect as a probe of non-standard cosmological evolution
T. Multamaki, O. Elgaroy
The Integrated Sachs-Wolfe effect is studied in non-standard cosmologies. By considering flat universes with a non-fluctuating dark energy component, it is shown how the quadrupole…