Effective actions, relative cohomology and Chern Simons forms
J. A. de Azcarraga, A. J. Macfarlane, J. C. Perez Bueno
Abstract
The explicit expression of all the WZW effective actions for a simple group G broken down to a subgroup H is established in a simple and direct way, and the formal similarity of these actions to the Chern-Simons forms is explained. Applications are also discussed.
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