Scalartensor theory of gravitation with negative coupling constant
Abstract
The possibility of a BransDicke scalartensor gravitation theory with a negative coupling constant is considered. The admissibility of a negativecoupling theory is investigated, and a simplified cosmological solution is obtained which allows a negative derivative of the gravitation constant. It is concluded that a BransDicke 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 scalartensor theory into close agreement with perihelionprecession 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