Homogeneous Conformal String Backgrounds

Details Homogeneous Conformal String Backgrounds Homogeneous Conformal String Backgrounds

1995-01-13

arxiv.org/abs/hep-th/9501055v1

Class.Quant.Grav.12:677-688,1995

Physics

High Energy Physics

High Energy Physics - Theory

20 pages, latex, no figures, to appear in Class. Q. Grav

Scientific paper

10.1088/0264-9381/12/3/006

We present exact solutions characterised by Bianchi-type I,II,III,V,VI four-dimensional metric, space-independent dilaton, and vanishing torsion background, for the low energy string effective action with zero central charge deficit. We show that, in such a context, curvature singularities cannot be avoided, except for the trivial case of flat spacetime and constant dilaton. We also provide a further example of the failure of the standard prescription for connecting conformal string backgrounds through duality transformations associated to non-semisimple, non-Abelian isometry group.

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