Abstract
We find the most general Bianchi type IX solution in Brans-Dicke theory (BDT) for the vacuum case, with the local rotational symmetry. For BDT coupling parameterw > 500 the universe becomes isotropic for any amount of initial anisotropy. In the extended inflation scenario, the Brans-Dicke scalar field φ can avoid the inflation in one direction.
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Guzman, E. Isotropization in Bianchi type IX vacuum cosmology. Int J Theor Phys 35, 419–424 (1996). https://doi.org/10.1007/BF02083824
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DOI: https://doi.org/10.1007/BF02083824