On continuum dynamics and the electromagnetic field in the scalar ether theory of gravitation

10th Biennial Conference on Classical and Quantum Relativistic Dynamics of Particles and Fields

Arminjon, Mayeul^1

Laboratory Soils, Solids Structures, Risks, CNRS, Université Grenoble-Alpes, Grenoble, France^1

关键词: Continuous medium;    Continuum dynamics;    Dynamical equation;    Energy-momentum tensor;    Gravitational fields;    Local production;    Newton's second law;    Non-gravitational force;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/845/1/012014/pdf
DOI  :  10.1088/1742-6596/845/1/012014

来源: IOP

【 摘 要 】

Our study of aspects of a scalar ether theory of gravitation is formulated in a preferred reference frame in a four-dimensional spacetime endowed with a curved "physical" metric. The dynamics of a test particle is defined by an extension of the special-relativistic form of Newton's second law. This determines the dynamical equation verified by the energy-momentum tensor T of a "dust" continuum, also in the presence of a non-gravitational external force. The dynamical equation for T thus obtained is assumed valid for a general continuous medium or a system of fields. When the non-gravitational force is the Lorentz force, this equation in turn determines the Maxwell equations in a gravitational field for the present theory. They are consistent with the dynamics of photons i.e. with the geometrical optics of the theory. Except for a constant gravitational field, they seem to imply some local production or destruction of electric charge. The possible amounts are yet to be assessed.