Stratification of the orbit space in gauge theories. The role of nongeneric strata

Details Stratification of the orbit space in gauge theories. The role of nongeneric strata Stratification of the orbit space in gauge theories. The role of nongeneric strata

2002-12-03

arxiv.org/abs/math-ph/0212013v1

J.Phys. A37 (2004) 11485-11498

Physics

Mathematical Physics

22 pages Latex, 1 figure

Scientific paper

10.1088/0305-4470/37/47/017

Gauge theory is a theory with constraints and, for that reason, the space of physical states is not a manifold but a stratified space (orbifold) with singularities. The classification of strata for smooth (and generalized) connections is reviewed as well as the formulation of the physical space as the zero set of a momentum map. Several important features of nongeneric strata are discussed and new results are presented suggesting an important role for these strata as concentrators of the measure in ground state functionals and as a source of multiple structures in low-lying excitations.

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