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Lorentz invariant gravity (split from Is Gravity a Force?)


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11 minutes ago, beecee said:

If you call gravity a force, you are essentially in the Newtonian domain and the most well known and used domain with everyday run of the mill calculations.

If you call gravity as geometry, specifically spacetime geometry, then you are in the GR domain, and essentially when high accuracy is the goal.

The author of this article points to 17 unresolved problems in GRT http://sergf.ru/litgen.htm

He believes that these problems can be solved within the framework of the LITG but using the GRT metric. In LITG, gravity is a force.

The above features of general relativity show that most of problems of theory of gravitation may be removed by use of LITG with the idea of using a metric similar to metric of general relativity, as a first approximation to a more accurate theory of gravitational field. In this case, general relativity becomes an extension of special relativity and has its function in the case when the results of spacetime measurements are dependent on existing in a system of electromagnetic and gravitational fields produced by sources of charge and mass. If there were not of influence of gravitation on propagation of light, similar to effects of deflection of electromagnetic waves from the initial direction, changing the wavelength and speed of its propagation, instead of general relativity would continue to operate special relativity and would be valid LITG. As well as special relativity is not a substitute of electrodynamics then general relativity can not be instead of LITG or electrodynamics, which have arisen and exist independently of general relativity. From the point of view of LITG, Einstein-Hilbert equations for metric are needed to determine the metric tensor that defines effective properties of spacetime for a given energy-momentum distribution, and changes metric tensor of flat Minkowski space. After finding the metric tensor from the equations for the metric, electrodynamics and LITG are not just Lorentz covariant (it is a special case of covariance that take place only in special relativity), but covariant for all the possible systems of reference in which the metric can be found. It follows from the possibility of writing the equations of these theories in the vector and tensor form. Then LITG becomes the

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