Off-Shell Formulation of N=2 Non-Linear Sigma-Models

Details Off-Shell Formulation of N=2 Non-Linear Sigma-Models Off-Shell Formulation of N=2 Non-Linear Sigma-Models

1996-10-15

arxiv.org/abs/hep-th/9610102v1

Nucl.Phys. B492 (1997) 623-646

Physics

High Energy Physics

High Energy Physics - Theory

22 pages, LaTeX

Scientific paper

10.1016/S0550-3213(97)00103-X

We study d=2, N=(2,2) non-linear sigma-models in (2,2) superspace. By analyzing the most general constraints on a superfield, we show that through an appropriate choice of coordinates, there are no other superfields than chiral, twisted chiral and semi-chiral ones. We study the resulting sigma-models and we speculate on the possibility that all (2,2) non-linear sigma-models can be described using these fields. We apply the results to two examples: the SU(2) x U(1) and the SU(2) x SU(2) WZW model. Pending upon the choice of complex structures, the former can be described in terms of either one semi-chiral multiplet or a chiral and a twisted chiral multiplet. The latter is formulated in terms of one semi-chiral and one twisted chiral multiplet. For both cases we obtain the potential explicitely.

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