On an Alternative Approach to Gravitation
Abstract
Several energymomentum "tensors" of gravitational field are considered and compared in the lowest approximation. Each of them together with energymomentum tensor of pointlike particles satisfies the conservation laws when equation of motion of particles are the same as in general relativity. It is shown that in Newtonian approximation the considered tensors differ one from the other in the way their energy density is distributed between energy density of interection (nonzero only at locations of particles) and energy density of gravitational field. Starting from Lorentz invariance the Lagrangians for spin2, mass0 field are constracted. They differ only by divergences. From these Lagrangians by BelinfanteRosenfeld procedure the energymomentum tensors are build. Only one of them is suitable for explaining the perihelion shift. This tensor does not coincide with Weinberg`s one (directly obtainable from Einstein equation). It is noted that phenomenological fieldtheoretical approach (utilizing only vertices and propagators) can lead to modification of theory in the region of strong field, where till now no observational data are available.
 Publication:

arXiv eprints
 Pub Date:
 March 1999
 arXiv:
 arXiv:hepth/9903034
 Bibcode:
 1999hep.th....3034N
 Keywords:

 High Energy Physics  Theory
 EPrint:
 28 pages, 2 figures