Bianchi I solutions of effective quadratic gravity

Abstract

It is believed that soon after the Planck time, Einstein's general relativity theory should be corrected to an effective quadratic theory. Numerical solutions for the anisotropic generalization of the Friedmann "flat" model $E^3$ for this effective gravity are given. It must be emphasized that although numeric, these solutions are exact in the sense that they depend only on the precision of the machine. The solutions are identified asymptotically in a certain sense. It is found solutions which asymptote de Sitter space, Minkowski space and a singularity. This work is a generalization for non diagonal spatial metrics of a previous result obtained by one of us and a collaborator for Bianchi $I$ spaces.

Version accepted for publication in the International Journal of Modern Physics D. arXiv admin note: substantial text overlap with arXiv:1103.5450

References in corpus (6)

• Fourth order gravity: equations, history, and applications to cosmology
• Further Exact Cosmological Solutions to Higher-Order Gravity Theories
• Classical and Quantum Features of the Mixmaster Singularity
• Stable Isotropic Cosmological Singularities in Quadratic Gravity
• The Stability of an Isotropic Cosmological Singularity in Higher-Order Gravity
• About Starobinsky inflation