Equivariant Cohomology and Localization Formula in Supergeometry

Details Equivariant Cohomology and Localization Formula in Supergeometry Equivariant Cohomology and Localization Formula in Supergeometry

2004-02-04

arxiv.org/abs/math/0402068v1

Mathematics

Differential Geometry

56 pages

Scientific paper

Let G be a compact Lie group. Let M be a smooth G-manifold and V --> M be an oriented G-equivariant vector bundle. One defines the spaces of equivariant forms with generalized coefficients on V and M. An equivariant Thom form $\theta$ on V is a compactly supported closed equivariant form such that its integral along the fibres is the constant function 1 on M. Such a Thom form was constructed by Mathai and Quillen. Its restriction to M gives a representative of the equivariant Euler class of V. In the supergeometric situation we give proper definitions of all the objects involved. But, in this case a Thom form doesn't always exist. In this article, when the action of G on V is sufficiently non-trivial, we construct such a Thom form with generalized coefficients. We use it to construct an equivariant Euler form of V and to generalize Berline-Vergne's localization formula to the supergeometric situation.

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