Unitary minimal models of SW(3/2,3/2,2) superconformal algebra and manifolds of G_2 holonomy

Boris Noyvert (Weizmann Institute)

Unitary minimal models of SW(3/2,3/2,2) superconformal algebra and manifolds of G_2 holonomy

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arxiv hep-th/0201198 v3 pith:OGZEK5XZ submitted 2002-01-24 hep-th math-phmath.MP

Boris Noyvert (Weizmann Institute) This is my paper · ORCID

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The SW(3/2,3/2,2) superconformal algebra is a W algebra with two free parameters. It consists of 3 superconformal currents of spins 3/2, 3/2 and 2. The algebra is proved to be the symmetry algebra of the coset (su(2)+su(2)+su(2))/su(2). At the central charge c=21/2 the algebra coincides with the superconformal algebra associated to manifolds of G_2 holonomy. The unitary minimal models of the SW(3/2,3/2,2) algebra and their fusion structure are found. The spectrum of unitary representations of the G_2 holonomy algebra is obtained.

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For G2 and SU(3) string backgrounds with NS flux, the scalar torsion class controls the first-order deformation of the worldsheet super W-algebra couplings away from special holonomy.

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