Algebraic Group Analogues of the Slodowy Slices and Deformations of Poisson W-algebras
Algebraic Group Analogues of the Slodowy Slices and Deformations of Poisson W-algebras
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泊松W-代数的缓慢切片和变形的代数群类似物
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发表时间:
2010
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通讯作者:
A. Sevostyanov
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文献类型:
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作者:
A. Sevostyanov
We define algebraic group analogues of the Slodowy transversal slices to adjoint orbits in a complex semisimple Lie algebra . The new slices are transversal to the conjugacy classes in an algebraic group G with Lie algebra . These slices are associated to (the conjugacy classes of) elements s of the Weyl group W of . For such slices, we prove an analogue of the Kostant cross-section theorem for the action of a unipotent group. Using this theorem, we equip the new slices with certain Poisson structures obtained by Poisson reduction from a Poisson–Lie group structure on G.