General 2+1 Dimensional Effective Actions and Soliton Spin Fractionalization

Details General 2+1 Dimensional Effective Actions and Soliton Spin Fractionalization General 2+1 Dimensional Effective Actions and Soliton Spin Fractionalization

1995-06-24

arxiv.org/abs/hep-th/9506163v1

Phys.Lett. B357 (1995) 539-544

Physics

High Energy Physics

High Energy Physics - Theory

10 pp., Plain Tex, no figures

Scientific paper

10.1016/0370-2693(95)00953-I

We propose actions for non-linear sigma models on cosets $G/H$ in 2+1 dimensions that include the most general non-linear realizations of Chern-Simons terms. When $G$ is simply connected and $H$ contains $r$ commuting U(1) factors, there are $r$ different topologically conserved charges and generically $r$ different types of topological solitons. Soliton spin fractionalizes as a function of the Chern-Simons couplings, with independent spins associated to each species of soliton charge, as well as to pairs of different charges. This model of soliton spin fractionalization generalizes to arbitrary $G/H$ a model of Wilczek and Zee for one type of soliton.

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