USp(4)-models
Oct 21, 2019Citations per year
Abstract: (arXiv)
We study the geometry of elliptic fibrations satisfying the conditions of Step 2 of Tate's algorithm with a discriminant of valuation 4. We call such geometries USp(4)-models, as the dual graph of their special fiber is the twisted affine Dynkin diagram of type C. These geometries are used in string theory to model gauge theories with the non-simply-laced Lie group USp(4) on a smooth divisor S of the base. Starting with a singular Weierstrass model of a USp(4)-model, we present a crepant resolution of its singularities. We study the fiber structure of this smooth elliptic fibration and identify the fibral divisors up to isomorphism as schemes over S. These are P1-bundles over S or double covers of P1-bundles over S. We compute basic topological invariants such as the triple intersections of the fibral divisors and the Euler characteristic of the USp(4)-model. In the case of Calabi-Yau threefolds, we also compute the Hodge numbers. We study the compactfications of M/F theory on a USp(4)-model Calabi-Yau threefold.Note:
- 33 pages, 4 tables, 6 figures
- Anomaly cancellations
- Five and Six-dimensional minimal supergravity theories
- El- liptic fibrations
- Crepant morphism
- Resolution of singularities
- Weierstrass models
- gauge field theory: model
- group: Lie
- geometry
- Calabi-Yau
References(63)
Figures(0)
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