The initial fate of an anisotropic JBD universe

✍ Scribed by H.N. Núñez-Yépez

• Publisher: Elsevier Science
• Year: 1999
• Tongue: English
• Weight: 116 KB
• Volume: 258
• Category: Article
• ISSN: 0375-9601
• DOI: 10.1016/s0375-9601(99)00357-6

✦ Synopsis

The dynamical effects on the scale factors due to the scalar f-field at the early stages of a supposedly anisotropic Universe expansion in the scalar-tensor cosmology of Jordan, Brans and Dicke is studied. This universe shows an isotropic evolution and, depending on the value of the theorie's coupling parameter v, it can begin from a singularity if v ) 0 and after expanding shrink to another one; or, if v -0 and y3r2-v Fy4r3, it can evolve from a flat spatially-infinite state to a non extended singularity; or, if y4r3-v -0, evolve from an extended singularity to a non singular state and, at last, proceed towards a singularity.