Toric Geometry, Enhanced non Simply laced Gauge Symmetries in Superstrings and F-theory Compactifications

Abstract

We study the geometric engineering of supersymmetric quantum field theories (QFT), with non simply laced gauge groups, obtained from superstring and F-theory compactifications on local Calabi-Yau manifolds. First we review the main lines of the toric method for ALE spaces with ADE singularities which we extend to non simply laced ordinary and affine singularities. Then, we develop two classes of solutions depending on the two possible realisations of the outer-automorphism group of the toric graph $\Delta$(ADE). In F-theory on elliptic Calabi-Yau manifolds, we give explicit results for the affine non simply laced toric data and the corresponding BCFG mirror geometries. The latters extend known results obtained in litterature for the affine ADE cases. We also study the geometric engineering of $N=1$ supersymmetric gauge theory in eight dimensions. In type II superstring compactifications on local Calabi-Yau threefolds, we complete the analysis for ordinary ADE singularities by giving the explict derivation of the lacking non simply ones. Finally we develop the basis of polyvalent toric geometry. The latter extends bivalent and trivalent geometries, considered in the geometric engineering method, and use it to derive a new solution for the affine ${\hat{D}}_4$ singularity. Other features are also discussed.

arXiv comment49 pages, 6 figures, Latex

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• Gauged Linear Sigma Model with F-term for A-type ALE Space
• Toric Varieties with NC Toric Actions: NC Type IIA Geometry
• Metric Building of pp Wave Orbifold Geometries
• NC Calabi-Yau Orbifolds in Toric Varieties with Discrete Torsion
• Non-commutative ADE geometries as holomorphic wave equations