Parabolic Higgs bundles, $t{t}^{\ast }$ connections and opers

Abstract

The non-abelian Hodge correspondence identifies complex variations of Hodge structures with certain Higgs bundles. In this work we analyze this relationship, and some of its ramifications, when the variations of Hodge structures are determined by a (complete) one-dimensional family of compact Calabi-Yau manifolds. This setup enables us to apply techniques from mirror symmetry. For example, the corresponding Higgs bundles extend to parabolic Higgs bundles to the compactification of the base of the families. We determine the parabolic degrees of the underlying parabolic bundles in terms of the exponents of the Picard-Fuchs equations obtained from the variations of Hodge structure. Moreover, we prove in this setup that the flat non-abelian Hodge or $t{t}^{\ast }$-connection is gauge equivalent to an oper which is determined by the corresponding Picard-Fuchs equations. This gauge equivalence puts forward a new derivation of non-linear differential relations between special functions on the moduli space which generalize Ramanujan's relations for the differential ring of quasi-modular forms.

arXiv commentReferences added and discussion of conformal limit revised

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Cited by in corpus (1)

• Parabolic SL(r)-opers