Expanding F-theory

Matthew Kleban, Michele Redi

    Research output: Contribution to journalArticlepeer-review


    We construct a general class of new time dependent solutions of non-linear σ-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.

    Original languageEnglish (US)
    Article number038
    JournalJournal of High Energy Physics
    Issue number9
    StatePublished - Sep 1 2007


    • F-theory
    • P-branes
    • Sigma models

    ASJC Scopus subject areas

    • Nuclear and High Energy Physics


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