联系我们
Isaac Scientific Publishing
Advances in Astrophysics
AdAp > Volume 5, Number 4, November 2020

The Radiation-Dominated Universe in Nonstandard Cosmology

Download PDF  (173.3 KB)PP. 95-108,  Pub. Date:November 14, 2020
DOI: 10.22606/adap.2020.54003

Author(s)
Günter Scharf
Affiliation(s)
Physics Institute, University of Zürich, Winterthurerstr. 190 , CH-8057 Zürich, Switzerland
Abstract
We continue the recent study of our model theory of low-density cosmology without dark matter. We assume a purely radiative spherically symmetric background and treat matter as anisotropic perturbations. Einstein’s equations for the background are solved numerically. We find two irregular singular points, one is the Big Bang and the other a Big Crunch. The radiation temperature continues to decrease for another 0.21 Hubble times and then starts to increase towards infinity. Then we derive the four evolution equations for the anisotropic perturbations. In the Regge-Wheeler gauge there are three metric perturbations and a radial velocity perturbation. The solution of these equations allow a detailed discussion of the cosmic evolution of the model universe under study.
Keywords
cosmology
References
  • [1]  1. Grigore D.R., Scharf G., 2008, No-go result for supersymmetric gauge theories in the causal approach, Annalen Phys. 17, 864
  • [2]  2. Scharf G. 2020, Island Universes, Galactic General Relativity without dark matter, Adv. Astrophys. 5(3), 63
  • [3]  3. Scharf G. 2020, Cosmology without dark matter, Adv. Astrophys. 5(1), 1
  • [4]  4. Scharf G. 2020, Maxwell and scalar fields in nonstandard cosmology 5(2), 43
  • [5]  5. Weinberg St. 1972, Gravitation and Cosmology, John Wiley & Sons
  • [6]  6. Regge T., Wheeler J.A. 1957, Phys. Rev. 108, 1063
  • [7]  7. Gundlach C., Matin-Garcia J.M. 2000, Phys. Rev. D 61, 084024
  • [8]  8. Weinberg St. 2008, Cosmology, Oxford University Press
  • [9]  9. Epstein H., Glaser V. 1973, Annales Poincaré Phys. Theor. A19, 211
Copyright © 2020 Isaac Scientific Publishing Co. All rights reserved.