Solutions for Neutral for Axi-Dilaton Gravity in 4-Dimensions

Abstract

We examine a 1 parameter class of actions describing the gravitational interaction between a pair of scalar fields and Einsteinian gravitation. When the parameter is positive the theory corresponds to an axi-dilatonic sector of low energy string theory. We exploit an SL(2,R) symmetry of the theory to construct a family of electromagnetically neutral solutions with non-zero axion and dilaton charge from solutions of the Brans-Dicke theory. We also comment on solutions to the theory with negative coupling parameter.

7 pages Plain Tex (No Figures), Letter to Editor, Classical and Quantum Gravity

References in corpus (5)

• Supersymmetry as a Cosmic Censor
• Quantization of Dyon Charge and Electric-Magnetic Duality in String Theory
• Dilaton Black Holes Near the Horizon
• Electric-Magnetic Duality and Supersymmetry in Stringy Black Holes
• Dilaton-Axion hair for slowly rotating Kerr black holes

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