Lagrangian fibrations on hyperk\"ahler manifolds - On a question of Beauville
Lagrangian fibrations on hyperk\"ahler manifolds - On a question of Beauville
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DOI:
10.24033/asens.2191
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发表时间:
2011-05
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影响因子:
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通讯作者:
D. Greb;C. Lehn;S. Rollenske
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文献类型:
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作者:
D. Greb;C. Lehn;S. Rollenske
Let X be a compact hyperk\"ahler manifold containing a complex torus L as a Lagrangian subvariety. Beauville posed the question whether X admits a Lagrangian fibration with fibre L. We show that this is indeed the case if X is not projective. If X is projective we find an almost holomorphic Lagrangian fibration with fibre L under additional assumptions on the pair (X, L), which can be formulated in topological or deformation-theoretic terms. Moreover, we show that for any such almost holomorphic Lagrangian fibration there exists a smooth good minimal model, i.e., a hyperk\"ahler manifold birational to X on which the fibration is holomorphic.