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        Describing anti-branes in F-theory using Lefschetz fibrations

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        Master thesis Harm Backx.pdf (6.174Mb)
        Publication date
        2018
        Author
        Backx, H.J.H.
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        Summary
        Type IIB string theory turns out to be SL(2,Z) invariant. This allows us to translate setups in string theory containing 7-branes to geometric objects called elliptic fibrations. This program is called F-theory. However, we cannot translate anti-branes into this type of geometry. We present an alternative for elliptic fibrations called achiral Lefschetz fibrations. We show that these allow for the description of anti-branes in a very natural way and also allow for the basic properties that we want these anti-branes to have.
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        https://studenttheses.uu.nl/handle/20.500.12932/31694
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