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arXiv · 0705.2020

Expanding F-Theory

Matthew Kleban·Michele Redi
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Abstract

We construct a general class of new time dependent solutions of non-linear sigma models coupled to gravity. These solutions describe configurations of expanding or contracting codimension two solitons which are not subject to a constraint on the total tension. The two dimensional metric on the space transverse to the defects is determined by the Liouville equation. This space can be compact or non-compact, and of any topology. We show that this construction can be applied naturally in type IIB string theory to find backgrounds describing a number of 7-branes larger than 24.

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Matthew Kleban, Michele Redi. 2007-06-21. Expanding F-Theory. https://doi.org/10.1088/1126-6708%2F2007%2F09%2F038

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