Further Exact Cosmological Solutions to Higher-Order Gravity Theories

Details Further Exact Cosmological Solutions to Higher-Order Gravity Theories Further Exact Cosmological Solutions to Higher-Order Gravity Theories

2006-01-27

arxiv.org/abs/gr-qc/0601118v1

Class.Quant.Grav. 23 (2006) 2951

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

15 pages and 2 figures

Scientific paper

10.1088/0264-9381/23/9/011

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.

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