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Primary fields and screening currents of gl(2|2) non-unitary conformal field theory

Yao-Zhong Zhang, Xin Liu, Wen-Li Yang

hep-tharXiv:hep-th/0410127

Abstract

The non-semisimple gl(2|2)k current superalgebra in the standard basis and the corresponding non-unitary conformal field theory are investigated. Infinite families of primary fields corresponding to all finite-dimensional irreducible typical and atypical representations of gl(2|2) and three (two even and one odd) screening currents of the first kind are constructed explicitly in terms of ten free fields.

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