Cosmological models without singularities.
Abstract
A previously studied theory of gravitation in flat spacetime [Petry, W. (1981).Gen. Rel. Grav. 13, 865] is applied to homogeneous and isotropic cosmological models. There exist two different classes of models without singularities: (i) everexpanding models, (ii) oscillating models. The first class contains models with hot big bang. For these models we get at the beginning of the universe—in contrast to Einstein's theory—very high but finite densities of matter and radiation with a big bang of very short duration. After short time these models pass into the homogeneous and isotropic models of Einstein's theory with spatial curvature equal zero and cosmological constant Λ⩾0.
 Publication:

General Relativity and Gravitation
 Pub Date:
 November 1981
 DOI:
 10.1007/BF00756365
 Bibcode:
 1981GReGr..13.1057P
 Keywords:

 Astronomical Models;
 Big Bang Cosmology;
 Gravitation Theory;
 Relativity;
 Universe;
 Cosmic Rays;
 Einstein Equations;
 Equations Of Motion;
 Matter (Physics);
 Metric Space;
 Red Shift;
 Transformations (Mathematics);
 Astrophysics;
 Cosmological Models