We use cookies to ensure that we give you the best experience on our website. By continuing to browse this repository, you give consent for essential cookies to be used. You can read more about our Privacy and Cookie Policy.

Durham Research Online
You are in:

A K3 sigma model with Z_2^8:M_20 symmetry.

Gaberdiel, M. and Taormina, A. and Volpato, R. and Wendland, K. (2014) 'A K3 sigma model with Z_2^8:M_20 symmetry.', Journal of high energy physics., 2014 (2). p. 22.


The K3 sigma model based on the Z2-orbifold of the D4-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 b su(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.

Item Type:Article
Keywords:Conformal and W symmetry, Discrete and finite symmetries, Conformal field models in string theory, Extended supersymmetry.
Full text:(VoR) Version of Record
Available under License - Creative Commons Attribution.
Download PDF
Publisher Web site:
Publisher statement:This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited.
Date accepted:15 January 2014
Date deposited:21 February 2014
Date of first online publication:05 February 2014
Date first made open access:No date available

Save or Share this output

Look up in GoogleScholar