A scalar Euclidean theory of gravitation: motion in a static spherically symmetric field

1990 ◽  
Vol 3 (6) ◽  
pp. 543-556 ◽  
Author(s):  
Torgny Sj�din
Keyword(s):  
Spherically Symmetric ◽  
Symmetric Field ◽  
Theory Of Gravitation

Equivalence principle for charged bodies in a theory of gravitation

1981 ◽  
Vol 59 (11) ◽  
pp. 1730-1733 ◽  
Author(s):  
R. B. Mann ◽  
J. W. Moffat
Keyword(s):  
Equivalence Principle ◽  
Maxwell Equations ◽  
Test Body ◽  
Spherically Symmetric ◽  
Point Particles ◽  
Symmetric Field ◽  
Static Spherically Symmetric Metric ◽  
Theory Of Gravitation ◽  
Spherically Symmetric Metric

The motion of a test body made of electromagnetically interacting point particles, falling in the static spherically symmetric field of the Hermitian theory of gravitation is shown to not disagree with the Eötvös–Dicke–Braginsky experiments for the equivalence principle. The modified Maxwell equations are calculated in the isotropic static spherically symmetric metric, and the role of the equivalence principle in the new theory is discussed in detail.

scholarly journals REISSNER–NORDSTRÖM SOLUTIONS AND ENERGY IN TELEPARALLEL THEORY

2006 ◽  
Vol 21 (29) ◽  
pp. 2241-2250 ◽  
Author(s):  
GAMAL G. L. NASHED
Keyword(s):  
Spherically Symmetric ◽  
Tetrad Field ◽  
Symmetric Spacetimes ◽  
Time Space ◽  
Teleparallel Theory ◽  
Theory Of Gravitation ◽  
Spherically Symmetric Spacetimes ◽  
Charged Source ◽  
Superpotential Method ◽  
Tetrad Theory

We give three different spherically symmetric spacetimes for the coupled gravitational and electromagnetic fields with charged source in the tetrad theory of gravitation. One of these contains an arbitrary function and generates the others. These spacetimes give the Reissner–Nordström metric black hole. We then calculated the energy associated with these spacetimes using the superpotential method. We find that unless the time-space components of the tetrad field go to zero faster than [Formula: see text] at infinity, one gets different results for the energy.

Bending of Acoustic Rays in a Spherically Symmetric Field — A Comparison with Sjödin's Approach

1984 ◽  
Vol 39 (7) ◽  
pp. 623-625
Author(s):  
Kamal K. Nandi
Keyword(s):  
Quantitative Evaluation ◽  
Spherically Symmetric ◽  
Symmetric Field ◽  
Light Rays ◽  
Bending Of Light

The formula for the bending of acoustic rays in a fluid having a spherically symmetric inhomogeneity has been obtained without making use of Bouger's theorem. The resulting formula happens to be qualitatively similar to that obtained by Sjödin for the bending of light rays in an inhomogeneous ether. However, a particular difficulty (with a plausible way of resolution) in connection with the quantitative evaluation of the bending of acoustic rays has also been pointed out. In addition, some comments are made regarding the advantages of the adopted approach.

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