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Title: Inflation, large branes, and the shape of space
Authors: McInnes, B. 
Issue Date: 7-Mar-2005
Source: McInnes, B. (2005-03-07). Inflation, large branes, and the shape of space. Nuclear Physics B 709 (1-2) : 213-240. ScholarBank@NUS Repository.
Abstract: Linde has recently argued that compact flat or negatively curved spatial sections should, in many circumstances, be considered typical in Inflationary cosmologies. We suggest that the "large brane instability" of Seiberg and Witten eliminates the negative candidates in the context of string theory. That leaves the flat, compact, three-dimensional manifolds - Conway's platycosms. We show that deep theorems of Schoen, Yau, Gromov and Lawson imply that, even in this case, Seiberg-Witten instability can be avoided only with difficulty. Using a specific cosmological model of the Maldacena-Maoz type, we explain how to do this, and we also show how the list of platycosmic candidates can be reduced to three. This leads to an extension of the basic idea: The conformal compactification of the entire Euclidean spacetime also has the topology of a flat, compact, four-dimensional space. © 2004 Elsevier B.V. All rights reserved.
Source Title: Nuclear Physics B
ISSN: 05503213
DOI: 10.1016/j.nuclphysb.2004.11.053
Appears in Collections:Staff Publications

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