Equivariant Dixmier-Douady classes

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An equivariant bundle gerbe ̀a la Meinrenken over a G-manifold M is known to be a special type of S1-gerbe over the differentiable stack [M/G]. We prove that the natural morphism relating the Cartan and simplicial models of equivariant cohomology in degree 3 maps the Dixmier-Douady class of an equivariant bundle gerbe ̀a la Meinrenken to the Behrend-Xu-Dixmier- Douady class of the corresponding S1-gerbe.

Original languageEnglish (US)
Pages (from-to)127-145
Number of pages19
JournalMathematical Research Letters
Issue number1
StatePublished - Jan 2010

All Science Journal Classification (ASJC) codes

  • Mathematics(all)


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