Hot big bang or slow freeze?
We confront the big bang for the beginning of the universe with an equivalent picture of a slow freeze — a very cold and slowly evolving universe. In the freeze picture the masses of elementary particles increase and the gravitational constant decreases with cosmic time, while the Newtonian attracti...
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| 1. Verfasser: | |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
11 August 2014
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| In: |
Physics letters
Year: 2014, Jahrgang: 736, Pages: 506-514 |
| ISSN: | 1873-2445 |
| DOI: | 10.1016/j.physletb.2014.08.013 |
| Online-Zugang: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1016/j.physletb.2014.08.013 Verlag, lizenzpflichtig, Volltext: http://www.sciencedirect.com/science/article/pii/S0370269314005802 
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| Verfasserangaben: | C. Wetterich (Institut für Theoretische Physik, Universität Heidelberg) |
MARC
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| 520 | |a We confront the big bang for the beginning of the universe with an equivalent picture of a slow freeze — a very cold and slowly evolving universe. In the freeze picture the masses of elementary particles increase and the gravitational constant decreases with cosmic time, while the Newtonian attraction remains unchanged. The freeze and big bang pictures both describe the same observations or physical reality. We present a simple “crossover model” without a big bang singularity. In the infinite past space-time is flat. Our model is compatible with present observations, describing the generation of primordial density fluctuations during inflation as well as the present transition to a dark energy-dominated universe. | ||
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