1109.2082
A new approach to cosmological perturbations in f(R) models
Bertacca, Bartolo, Matarrese
Method to quantitatively determine the deviation in the behaviour of cosmological perturbations between f(R) gravity and LCDM reference. Allows study of structure formation in these models from the largest scales, down to scales deeply inside Hubble radius (without employing the "quasi-static" approximation) (?). Analysis restricted to linear perturbations, but the technique is completely general and can be extended to any perturbative order.
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