Scalar-tensor theory of gravitation with negative coupling constant
Abstract
The possibility of a Brans-Dicke scalar-tensor gravitation theory with a negative coupling constant is considered. The admissibility of a negative-coupling theory is investigated, and a simplified cosmological solution is obtained which allows a negative derivative of the gravitation constant. It is concluded that a Brans-Dicke theory with a negative coupling constant can be a viable alternative to general relativity and that a large negative value for the coupling constant seems to bring the original scalar-tensor theory into close agreement with perihelion-precession results in view of recent observations of small solar oblateness.
- Publication:
-
Nuovo Cimento B Serie
- Pub Date:
- September 1976
- DOI:
- 10.1007/BF02726282
- Bibcode:
- 1976NCimB..35...54S
- Keywords:
-
- Coupling;
- Gravitation Theory;
- Cosmology;
- Field Theory (Physics);
- Gravitational Fields;
- Scalars;
- Solar Oblateness;
- Tensors;
- Astrophysics