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PERIMETER INSTITUTE RECORDED SEMINAR ARCHIVE

PIRSA:08060157  ( MP4 Medium Res , MP3 , PDF ) Which Format?
LARGE Volume Scenarios and String Loops
Speaker(s): Michele Cicoli
Abstract: We study the necessary and sufficient topological conditions for general Calabi-Yaus to get a non-supersymmetric AdS exponentially large volume minimum of the scalar potential in flux compactifications of IIB string theory. It turns out that string loop corrections play a crucial role to realise exponentially large volume minima for fibration Calabi-Yaus and to stabilise 4-cycles which support chiral matter. The robustness of these results is due to the 'extended no-scale structure': for arbitrary Calabi-Yaus, the leading contribution of these corrections to the scalar potential is always vanishing. We use the Coleman-Weinberg potential to motivate this cancellation from the viewpoint of low-energy field theory.
Date: 05/06/2008 - 3:00 pm
Collection: PASCOS 08
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