The ten-parametric internal symmetry group is found in the D=4 Einstein-Maxwell-dilaton-axion theory restricted to space-times admitting a Killing vector field. The group includes dilaton-axion SL(2,R) duality and Harrison-type transformations which are similar to some target-space duality boosts, but act on a different set of variables. A new symmetry is used to derive a seven-parametric family of rotating dilaton-axion Taub-NUT dyons.
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Gal’tsov et al. (1994) studied this question.
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