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Very stable bundles and properness of the Hitchin map

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arxiv 1710.10152 v1 pith:DHT3D3N2 submitted 2017-10-27 math.AG

classification math.AG
keywords stablebundlehiggshitchinvectorverybundlescanonical
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abstract

Let $X$ be a smooth complex projective curve of genus $g\geq 2$ and let $K$ be its canonical bundle. In this note we show that a stable vector bundle $E$ on $X$ is very stable, i.e. $E$ has no non-zero nilpotent Higgs field, if and only if the restriction of the Hitchin map to the vector space of Higgs fields $H^0(X, \mathrm{End}(E) \otimes K)$ is a proper map.

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Cited by 1 Pith paper

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  1. Non-Abelian Hodge Theory and Related Topics

    math.AG 2019-08 conditional novelty 4.0 of 10

    A survey of non-Abelian Hodge theory and related moduli spaces, with a new explicit description of Simpson filtrations for rank 3 flat bundles.

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