Schiff's Conjecture on Gravitation
Abstract
Considered here is a class of theories of gravity characterized by a set of equations which represent the gravitational and electromagnetic structure of the theories in a spherically symmetric and static gravitational field. If one demands that the weak equivalence principle (WEP) and the principle of universality of gravitational red shift (UGR) be satisfied, it is found that the theories under investigation must be metric. This result lends support to the current version of Schiff's conjecture that WEP+UGR>EEP, where EEP refers to the Einstein equivalence principle.
 Publication:

Physical Review Letters
 Pub Date:
 September 1982
 DOI:
 10.1103/PhysRevLett.49.853
 Bibcode:
 1982PhRvL..49..853C
 Keywords:

 Gravitation Theory;
 Gravitational Fields;
 Relativity;
 Electromagnetic Radiation;
 Maxwell Equation;
 Particle Acceleration;
 Red Shift;
 Astrophysics;
 04.20.Cv;
 04.50.+h;
 04.80.+z;
 Fundamental problems and general formalism;
 Gravity in more than four dimensions KaluzaKlein theory unified field theories;
 alternative theories of gravity