Research ArticleOpen AccessGoogle Scholar indexed
Probabilistic Cosmology
Department of Mathematics, University of Stockholm, Stockholm, Sweden
- 1 Department of Mathematics, University of Stockholm, Stockholm, Sweden
Journal of Modern Physics·Volume 10 (2019)·Pages 1424–1438·Published 28 October 2019·DOI10.4236/jmp.2019.1012095
Copy link · social · email
Abstract
In this paper, an alternative approach to cosmology is discussed. Rather than starting from the field equations of general relativity, one can investigate the probability space of all possible universes and try to decide what kind of universe is the most probable one. Here two quite different models for this probability space are presented: the combinatorial model and the random curvature model. In addition, it is briefly discussed how these models could be applied to explain two fundamental problems of cosmology: Time’s Arrow and the accelerating expansion.
KeywordsCosmologyEnsembleTime’s ArrowAccelerating ExpansionMultiverse
- Friedmann, A. (1922) Zeitschrift fur Physik, 10, 377-386. https://doi.org/10.1007/BF01332580
- Misner, C.M., Thorne, K.S. and Wheeler, J.A. (1973) Gravitation. W. H. Freeman and Company, San Francisco.
- Wald, R.M. (1984) General Relativity. The University of Chicago Press, Chicago. https://doi.org/10.7208/chicago/9780226870373.001.0001
- Adam, G.R., et al. (1998) The Astronomical Journal, 116, 1009-1038. https://doi.org/10.1086/300499
- Perlmutter, S., et al. (1999) The Astronomical Journal, 517, 565-586. https://doi.org/10.1086/307221
- Tamm, M. (2013) Physics Essays, 26, 237-246. https://doi.org/10.4006/0836-1398-26.2.237
- Tamm, M. (2015) International Journal of Astronomy and Astrophysics, 5, 70-78. https://doi.org/10.4236/ijaa.2015.52010
- Tamm, M. (2016) Symmetry, 8, 11. https://doi.org/10.3390/sym8030011
- Tamm, M. (2015) Journal of Modern Physics, 6, 239-251. https://doi.org/10.4236/jmp.2015.63029
- Eddington, A.S. (1928) The Nature of the Physical World. Cambridge University Press, Cambridge, Chapters 3 & 4. https://doi.org/10.5962/bhl.title.5859
- Barbour, J. (1999) The End of Time. University Press, Oxford.
- Halliwell, J.J., Perez-Mercander, J. and Zurek, W.H. (1994) Physical Origins of Time Asymmetry. Cambridge University Press, Cambridge.
- Zeh, H.D. (2001) The Physical Basis of the Direction of Time. 4th Edition, Springer Verlag, Berlin Heidelberg. https://doi.org/10.1007/978-3-540-38861-6
- Fischer, H. (2011) A History of the Central Limit Theorem: From Classical to Modern Probability Theory, Sources and Studies in the History of Mathematics and Physical Sciences. Springer, New York. https://doi.org/10.1007/978-0-387-87857-7_8
- Huang, K. (1987) Statistical Mechanics. 2nd Edition, John Wiley & Sons, Inc., New York.