Scale Factor Dualities in Anisotropic Cosmologies

Details Scale Factor Dualities in Anisotropic Cosmologies Scale Factor Dualities in Anisotropic Cosmologies

1998-02-19

arxiv.org/abs/gr-qc/9802053v1

Class.Quant.Grav. 15 (1998) 257-272

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

28 pages, Latex source

Scientific paper

10.1088/0264-9381/15/2/002

The concept of scale factor duality is considered within the context of the spatially homogeneous, vacuum Brans-Dicke cosmologies. In the Bianchi class A, it is found that duality symmetries exist for the types I, II, VI_0, VII_0, but not for types VIII and IX. The Kantowski-Sachs and locally rotationally symmetric Bianchi type III models also exhibit a scale factor duality, but no such symmetries are found for the Bianchi type V. In this way anisotropy and spatial curvature may have important effects on the nature of such dualities.

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