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EnglishIn this paper we study the diagonal cosets of the non-compact H-4 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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| Titolo: | The diagonal cosets of the Heisenberg group |
| Autori: | |
| Data di pubblicazione: | 2008 |
| Rivista: | |
| Abstract: | In this paper we study the diagonal cosets of the non-compact H-4 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. |
| Handle: | http://hdl.handle.net/11584/15882 |
| Tipologia: | 1.1 Articolo in rivista |
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