ar X iv : g r - qc / 0 60 11 18 v 1 2 7 Ja n 20 06 Further Exact Cosmological Solutions to Higher - Order Gravity Theories
نویسنده
چکیده
We investigate the effect of deviations from general relativity on approach to the initial singularity by finding exact cosmological solutions to a wide class of fourth-order gravity theories. We present new anisotropic vacuum solutions of modified Kasner type and demonstrate the extent to which they are valid in the presence of non-comoving perfect-fluid matter fields. The infinite series of Mixmaster oscillations seen in general relativity will not occur in these solutions, except in unphysical cases. Further Exact Cosmological Solutions to Higher-Order Gravity Theories. 2
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