Invariant Effective Actions and Cohomology
| dc.creator | D'Hoker, Eric | |
| dc.date | 1995-05-17 | |
| dc.date.accessioned | 2026-07-07T04:21:10Z | |
| dc.date.available | 2026-07-07T04:21:10Z | |
| dc.description | We review the correspondence between effective actions resulting from non-invariant Lagrangian densities, for Goldstone bosons arising from spontaneous breakdown of a symmetry group G to a subgroup H, and non-trivial generators of the de Rham cohomology of G/H. We summarize the construction of cohomology generators in terms of symmetric tensors with certain invariance and vanishing properties with respect to G and H. The resulting actions in four dimensions arise either from products of generators of lower degree such as the Goldstone-Wilczek current, or are of the Wess-Zumino-Witten type. Actions in three dimensions arise as Chern-Simons terms evaluated on composite gauge fields and may induce fractional spin on solitons. {Contribution to the Proceedings of STRINGS 95, held at University of Southern California, March 13 - 18, 1995.} | |
| dc.description | 15 pages, Plain TeX, no figures | |
| dc.identifier | https://arxiv.org/abs/hep-th/9505109 | |
| dc.identifier | http://arxiv.org/abs/hep-th/9505109 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/54205 | |
| dc.subject | High Energy Physics - Theory | |
| dc.title | Invariant Effective Actions and Cohomology | |
| dc.type | text |