nLab
Chern-Simons gerbe

Idea

A Chern-Simons gerbe is a lifting gerbe for the shifted central extension

BU(1)String(G)G \mathbf{B}U(1) \to String(G) \to G

given by the string group.

This is called “Chern-Simons gerbe” because for a given GG-principal bundle PP; the corresponding Chern-Simons gerbe has the property that

Created on January 6, 2010 16:59:17 by Urs Schreiber (88.128.80.238)