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arXiv · 0801.4634

The diagonal cosets of the Heisenberg group

Giuseppe D'Appollonio·Thomas Quella
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Abstract

In this paper we study the diagonal cosets of the non-compact H4 WZW model. Generalising earlier work by Antoniadis and Obers, we provide an exact world-sheet description for several families of non-maximally symmetric gravitational plane waves with background NS fluxes. We show that the sigma-models that correspond to an asymmetric action of the gauge group smoothly interpolate between singular and non-singular plane waves. We also analyse the representations of the coset chiral algebra and derive the spectrum of all the models.

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Giuseppe D'Appollonio, Thomas Quella. 2008-05-17. The diagonal cosets of the Heisenberg group. https://doi.org/10.1088/1126-6708%2F2008%2F05%2F060

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