1995/02/08 by Tekin Dereli, T Dereli, Mehmet Önder +3 · 1 citation
Physics and Astronomy · #Axion #Black Holes and Theoretical Physics #Brans–Dicke theory #Classical mechanics #Cosmology and Gravitation Theories #Coupling (piping) #Coupling parameter #Dark Matter and Cosmic Phenomena #Dark matter #Dilaton #Gravitation #Mathematical physics #Particle physics #Physics #Quantum mechanics #Scalar (mathematics) #String theory #Symmetry (geometry) #Theoretical physics #gr-qc
paper · pdf · doi:10.1088/0264-9381/12/4/001
published as Class.Quant.Grav.12:L25-L30,1995 · 7 pages Plain Tex (No Figures), Letter to Editor, Classical and Quantum Gravity
arxiv created 1995/02/08 · openalex publication_date 1995/04/01 · arxiv updated 2010/11/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We examine a one-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.