# Evolution of Dark Energy Perturbations in Scalar-Tensor Cosmologies

@article{Snchez2010EvolutionOD, title={Evolution of Dark Energy Perturbations in Scalar-Tensor Cosmologies}, author={J. C. Bueno S{\'a}nchez and Leandros Perivolaropoulos}, journal={Physical Review D}, year={2010}, volume={81}, pages={103505} }

We solve analytically and numerically the generalized Einstein equations in scalar-tensor cosmologies to obtain the evolution of dark energy and matter linear perturbations. We compare our results with the corresponding results for minimally coupled quintessence perturbations. We find that scalar-tensor dark energy density perturbations are amplified by a factor of about 10{sup 4} compared to minimally coupled quintessence perturbations on scales less than about 1000 h{sup -1} Mpc (sub-Hubble… Expand

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