Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
1997-02-03
Asian J.Math 1:214-223,1997
Physics
High Energy Physics
High Energy Physics - Theory
11 pages, Plain TeX. This is the published version, containing minor corrections
Scientific paper
A central role in recent investigations of the duality of F-theory and heterotic strings is played by the moduli of principal bundles, with various structure groups G, over an elliptically fibered Calabi-Yau manifold on which the heterotic theory is compactified. In this note we propose a simple algebro-geometric technique for studying the moduli spaces of principal G-bundles on an arbitrary variety X which is elliptically fibered over a base S: The moduli space itself is naturally fibered over a weighted projective base parametrizing spectral covers $\tilde{S}$ of S, and the fibers are identified as translates of distinguished Pryms of these covers. In nice situations, the generic Prym fiber is isogenous to the product of a finite group and an abelian subvariety of $Pic(\tilde{S})$.
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