G(4)-flux, chiral matter and singularity resolution in F-theory compactifications
G(4)-flux, chiral matter and singularity resolution in F-theory compactifications
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F 理论紧致化中的 G(4)-通量、手性物质和奇点解析
DOI:
10.1016/j.nuclphysb.2011.12.013
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发表时间:
2012
期刊:
影响因子:
--
通讯作者:
Weigand
中科院分区:
文献类型:
--
作者:
Krause;Mayrhofer;Weigand
We construct a set of chirality inducing G4-fluxes in global F-theory compactifications on Calabi–Yau four-folds. Special emphasis is put on models with gauge group SU(5)×U(1)Xrelevant in the context of F-theory GUT model building, which are described in terms of a U(1)-restricted Tate model. A G4-flux arises in a manner completely analogous to the U(1)Xgauge potential. We describe in detail the resolution by blow-up of the various singularities responsible for the U(1)Xfactor and the standard SU(5) gauge group and match the result with techniques applied in the context of toric geometry. This provides an explicit identification of the structure of the resolved fibre over the matter curves and over the enhancement points relevant for Yukawa couplings. We compute the flux-induced chiral index both of SU(5) charged matter and of SU(5) singlets charged only under U(1)Xlocalised on curves which are not contained in the SU(5) locus. We furthermore discuss global consistency conditions such as D3-tadpole cancellation, D-term supersymmetry and Freed–Witten quantisation. The U(1)Xgauge flux is a global extension of a class of split spectral cover bundles. It constitutes an essential ingredient in the construction of globally defined F-theory compactifications with chiral matter. We exemplify this in a three-generation SU(5)×U(1)Xmodel whose flux satisfies all of the above global consistency conditions. We also extend our results to chiral fluxes in models without U(1) restriction.
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DOI:
10.1016/j.nuclphysb.2009.02.025
发表时间:
2008
期刊:
Nuclear Physics
影响因子:
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作者:
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DOI:
--
发表时间:
1996
期刊:
影响因子:
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作者:
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影响因子:
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