Line bundles on spectral curves and the generalised Legendre transform construction of hyperkaehler metrics

Details Line bundles on spectral curves and the generalised Legendre transform construction of hyperkaehler metrics Line bundles on spectral curves and the generalised Legendre transform construction of hyperkaehler metrics

2008-06-03

arxiv.org/abs/0806.0510v3

Mathematics

Differential Geometry

a diagram added; a few clarifications; 25 pages

Scientific paper

10.1016/j.geomphys.2008.11.010

An analogue of the correspondence between GL(k)-conjugacy classes of matricial polynomials and line bundles is given for K-conjugacy classes, where K is one of the following: maximal parabolic, maximal torus, GL(k-1) embedded diagonally. The generalised Legendre transform construction of hyperkaehler metrics is studied further, showing that many known hyperkaehler metrics (including the ones on coadjoint orbits) arise in this way, and giving a large class of new (pseudo-)hyperkaehler metrics, analogous to monopole metrics.

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