Generalised chiral null models and rotating string backgrounds

Details Generalised chiral null models and rotating string backgrounds Generalised chiral null models and rotating string backgrounds

1996-03-15

arxiv.org/abs/hep-th/9603099v1

Phys.Lett.B381:73-80,1996

Physics

High Energy Physics

High Energy Physics - Theory

12 pages, latex

Scientific paper

10.1016/0370-2693(96)00581-3

We consider an extension of a special class of conformal sigma models (`chiral null models') which describe extreme supersymmetric string solutions. The new models contain both `left' and `right' vector couplings and should correspond to non-BPS backgrounds. In particular, we discuss a conformal six-dimensional model which is a combination of fundamental string and 5-brane models with two extra couplings representing rotations in orthogonal planes. If the two rotational parameters are independent the resulting background is found to be either singular or not asymptotically flat. The non asymptotically flat solution has a regular short distance limit described by a `twisted' product of SL(2,R) and SU(2) WZW theories with two twist parameters mixing the isometric Euler angles of SU(2) with a null direction of SL(2,R).

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