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Class of Einstein-Maxwell-Dilaton-Axion Space-Times

We use the harmonic maps ansatz to find exact solutions of the Einstein-Maxwell-Dilaton-Axion (EMDA) equations. The solutions are harmonic maps invariant to the symplectic real group in four dimensions $Sp(4,\Rreal)\sim O(5)$. We find solutions of the EMDA field equations for the one and two dimensional subspaces of the symplectic group. Specially, for illustration of the method, we find space-times that generalise the Schwarzschild solution with dilaton, axion and electromagnetic fields.

preprint2009arXivOpen access
Tonatiuh MatosGalaxia MirandaRuben Sanchez-SanchezPetra Wiederhold
gr-qc
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Open access4 authors1 topic
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Tonatiuh MatosGalaxia MirandaRuben Sanchez-SanchezPetra Wiederhold

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