Thursday, June 14, 2012

1206.2723 (A. Emir Gumrukcuoglu et al.)

Anisotropic Friedmann-Robertson-Walker universe from nonlinear massive gravity    [PDF]

A. Emir Gumrukcuoglu, Chunshan Lin, Shinji Mukohyama
In the scope of the nonlinear massive gravity, we study fixed points of evolution equations for a Bianchi type--I universe. We find a new attractor solution with non-vanishing anisotropy, on which the physical metric is isotropic but the Stuckelberg configuration is anisotropic. As a result, at the background level, the solution describes a homogeneous and isotropic universe, while a statistical anisotropy is expected from perturbations, suppressed by smallness of the graviton mass.
View original: http://arxiv.org/abs/1206.2723

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