NDLI: Bianchi V I I A solutions of effective quadratic gravity

Content Provider	Springer Nature Link
Author	Deus, Julia A. Müller, Daniel
Copyright Year	2012
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 “open” model H 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 way. It is found solutions which asymptote de Sitter space, Riemann flat space and a singularity. The question of isotropisation of an initially anisotropic Universe is of great importance in the context of cosmology. Although isotropisation is not directly discussed in this present work, we show that sufficiently small anisotropies, do not increase indefinitely according to particular quadratic gravity theories. It can be understood as weak isotropisation, and we stress that this result is strongly dependent on initial conditions.
Starting Page	1459
Ending Page	1478
Page Count	20
File Format	PDF
ISSN	00017701
Journal	General Relativity and Gravitation
Volume Number	44
Issue Number	6
e-ISSN	15729532
Language	English
Publisher	Springer US
Publisher Date	2012-04-26
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Cosmology Homogenous Anisotropic Effective gravity Classical and Quantum Gravitation, Relativity Theory Quantum Physics Astronomy, Astrophysics and Cosmology Theoretical, Mathematical and Computational Physics Differential Geometry
Content Type	Text
Resource Type	Article
Subject	Physics and Astronomy

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