Some cosmological implications and restrictions from geometry and topology of 3 and 4 manifolds
20124 pages
Part of Proceedings, Multiverse and Fundamental Cosmology (Multicosmofun'12) : Szczecin, Poland, September 10-14, 2012, 101-104
Published in:
- AIP Conf.Proc. 1514 (2013) 1, 101-104
Contribution to:
- , 101-104
- Multicosmofun'12
- Published: Feb 22, 2013
DOI:
Citations per year
Abstract: (AIP)
We show that the requirement of contractability and smoothness of certain 4-manifolds representing the cosmic evolution restricts the possible spatial models. In particular certain models like the Poincare sphere are excluded. Turning to the case of a fake S3Oe it is argued that the inflation can be explained by the exotic smooth structure of this 4-manifold. Finally, we discuss the exotic R4 to which we assign a gravitational instanton.- 02.40.Ma
- 98.80.Jk
- 04.65.+e
- 98.80.Bp
- 02.40.Re
- cosmic acceleration
- cosmology
- geometry
- supergravity
- topology
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