
Open access
Date
2014-02Type
- Journal Article
Abstract
The K3 sigma model based on the Z2-orbifold of the D 4-torus theory is studied. It is shown that it has an equivalent description in terms of twelve free Majorana fermions, or as a rational conformal field theory based on the affine algebra suˆ(2)6. By combining these different viewpoints we show that the N = (4, 4) preserving symmetries of this theory are described by the discrete symmetry group Z82 : M20. This model therefore accounts for one of the largest maximal symmetry groups of K3 sigma models. The symmetry group involves also generators that, from the orbifold point of view, map untwisted and twisted sector states into one another. Show more
Permanent link
https://doi.org/10.3929/ethz-b-000080979Publication status
publishedExternal links
Journal / series
Journal of High Energy PhysicsVolume
Pages / Article No.
Publisher
SpringerSubject
Conformal and W Symmetry; Discrete and Finite Symmetries; Conformal Field Models in String Theory; Extended SupersymmetryOrganisational unit
03657 - Gaberdiel, Matthias / Gaberdiel, Matthias
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