New Possibilities for Observational Distinction Between Geometrical and Field Gravity Theories

Details New Possibilities for Observational Distinction Between Geometrical and Field Gravity Theories New Possibilities for Observational Distinction Between Geometrical and Field Gravity Theories

2008-09-13

arxiv.org/abs/0809.2328v1

PracticalCosmology.1:276-286,2008

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

13 pages, Proceedings of the International conference "Problems of Practical Cosmology", 23-27 June 2008, St.-Petersburg, Russ

Scientific paper

Crucial observational tests of gravity physics are reviewed. Such tests are able to clarify the key question on the nature of gravitational interaction: is gravity the curvature of space? or is gravity a matter field in Minkowski flat space as other physical forces? Up to now all actually performed experiments do not allow to distinguish between these two alternatives in gravity physics. The existence of well-defined positive energy-momentum of the gravity field in Poincare-Feynman approach leads to radical changes in gravity physics and cosmology which may be tested by laboratory experiments and astrophysical observations. New possibilities for observational distinction between geometrical general relativity and field gravity theories are discussed. Among them: the contribution of the scalar repulsive force into Newtonian gravitational interaction, post-Newtonian translational motion of rotating bodies, gravitational deflection of light by small mass bodies, scalar gravitational radiation from spherically pulsating stars, existence of limiting radius, surface, magnetic field for massive bodies and absence of singularities and horizons for relativistic compact objects.

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