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Cayley and Langlands type correspondences for orthogonal Higgs bundles

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arxiv 1708.08828 v1 pith:JCX4ZRNL submitted 2017-08-29 math.DG math-phmath.AGmath.MP

Cayley and Langlands type correspondences for orthogonal Higgs bundles

classification math.DG math-phmath.AGmath.MP
keywords realbundlescayleycorrespondenceshiggslanglandsorthogonaltype
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Through Cayley and Langlands type correspondences, we give a geometric description of the moduli spaces of real orthogonal and symplectic Higgs bundles of any signature in the regular fibres of the Hitchin fibration. As applications of our methods, we complete the concrete abelianization of real slices corresponding to all quasi-split real forms, and describe how extra components emerge naturally from the spectral data point of view.

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