Wilkinson Microwave Anisotropy Probe data and the curvature of space
Corresponding Author
Jean-Philippe Uzan
Laboratoire de Physique Théorique, CNRS–UMR 8627, Bât. 210, Université Paris XI, F–91405 Orsay Cedex, France
Institut d'Astrophysique de Paris, GReCO, CNRS-FRE 2435, 98 bis, Bd Arago, 75014 Paris, France
Department of Mathematics and Applied Mathematics, University of Cape Town, Rondebosch 7700, Cape Town, South Africa
★ E-mail: [email protected]Search for more papers by this authorUlrich Kirchner
Department of Mathematics and Applied Mathematics, University of Cape Town, Rondebosch 7700, Cape Town, South Africa
Search for more papers by this authorGeorge F. R. Ellis
Department of Mathematics and Applied Mathematics, University of Cape Town, Rondebosch 7700, Cape Town, South Africa
Search for more papers by this authorCorresponding Author
Jean-Philippe Uzan
Laboratoire de Physique Théorique, CNRS–UMR 8627, Bât. 210, Université Paris XI, F–91405 Orsay Cedex, France
Institut d'Astrophysique de Paris, GReCO, CNRS-FRE 2435, 98 bis, Bd Arago, 75014 Paris, France
Department of Mathematics and Applied Mathematics, University of Cape Town, Rondebosch 7700, Cape Town, South Africa
★ E-mail: [email protected]Search for more papers by this authorUlrich Kirchner
Department of Mathematics and Applied Mathematics, University of Cape Town, Rondebosch 7700, Cape Town, South Africa
Search for more papers by this authorGeorge F. R. Ellis
Department of Mathematics and Applied Mathematics, University of Cape Town, Rondebosch 7700, Cape Town, South Africa
Search for more papers by this authorABSTRACT
Inter alia, the high-precision Wilkinson Microwave Anisotropy Probe (WMAP) data on cosmic background radiation marginally indicate that the Universe has positively curved (and hence spherical) spatial sections. In this Letter, we take this data seriously and consider some of the consequences for the background dynamics. In particular, we show that this implies a limit to the number of e-foldings that could have taken place in the inflationary epoch; however, this limit is consistent with some inflationary models that solve all the usual cosmological problems and that are consistent with standard structure formation theory.
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