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arXiv · hep-th/9606062

Space-time singularities and the axion in the Poincare coset models ISO(2,1)/H

Roberto Casadio·Benjamin Harms
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Abstract

By promoting an invariant subgroup $H$ of $ISO(2,1)$ to a gauge symmetry of a WZWN action, we obtain the description of a bosonic string moving either in a curved 4-dimensional space--time with an axion field and curvature singularities or in 3-dimensional Minkowski space--time.

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Roberto Casadio, Benjamin Harms. 1996-06-12. Space-time singularities and the axion in the Poincare coset models ISO(2,1)/H. https://doi.org/10.1016/s0370-2693(96)01253-1

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