A Hypothesis, Unifying the Structure and the Entropy of the Universe
Open accessAbstract
A hypothesis about the averaged initial state and its perturbations is put forward, describing the entropy of the hot Universe (due to damping of short waves) and its structure (clusters of galaxies due to long wave perturbations).
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The primordial fluctuations would be scale invariant and described by a power spectrum.
“These primordial fluctuations would be scale invariant and described by the power spectrum (Harrison 1970; Peebles and Yu 1970; Zeldovich 1972)48with .”
From Testing general relativity in cosmology (2019) · cites this paper as Zeldovich 1972
Inflation predicts a nearly scale-invariant spectrum of fluctuations, but such a spectrum was proposed for independent reasons by Harrison (1970) and Zel'dovich (1972) a decade before inflation was proposed.
“Inflation predicts a nearly scale-invariant spectrum of fluctuations, but such a spectrum was proposed for independent reasons by Harrison (1970) and Zel'dovich (1972) a decade before inflation was proposed.”
From The Fine-Tuning of the Universe for Intelligent Life (2012) · cites this paper as Zel'dovich (1972)
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Ratra, B., & Peebles, P. J. E. (1988) · Physical Review D · doi:10.1103/physrevd.37.3406 · Cited by 4,310 · see citing works
In the realm of the Hubble tension—a review of solutions <sup>*</sup>
Di Valentino, E., Mena, O., Pan, S., Visinelli, L., Yang, W., Melchiorri, A., Mota, D. F., Riess, A. G., & Silk, J. (2021) · Classical and Quantum Gravity · doi:10.1088/1361-6382/ac086d · Cited by 2,065 · see citing works
Testing general relativity in cosmology
Ishak, M. (2019) · Living Reviews in Relativity · doi:10.1007/s41114-018-0017-4 · Cited by 449 · see citing works
Initial conditions for inflation
Goldwirth, D. S., & Piran, T. (1992) · Physics Reports · doi:10.1016/0370-1573(92)90073-9 · Cited by 232 · see citing works
The Fine-Tuning of the Universe for Intelligent Life
Barnes, L. A. (2012) · Publications of the Astronomical Society of Australia · doi:10.1071/as12015 · Cited by 150 · see citing works
“Inflation predicts a nearly scale-invariant spectrum of fluctuations, but such a spectrum was proposed for independent reasons by Harrison (1970) and Zel’dovich (1972) a decade before inflationwas proposed.”
BackgroundAmplification of cosmological inhomogeneities by the QCD transition
Schmid, C., Schwarz, D. J., & Widerin, P. (1999) · Physical Review D · doi:10.1103/physrevd.59.043517 · Cited by 132 · see citing works
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- Authors
- Zeldovich, Y. B.
- Corresponding author
- Zeldovich, Y. B.
- Venue
- Monthly Notices of the Royal Astronomical Society
- Publisher
- Oxford University Press (OUP)
- Published
- 1972-10-01
- Volume
- 160
- Issue
- 1
- Pages
- 1P-3P
- ISSN
- 0035-8711 (ISSN-L)
- 1365-2966
- OpenAlex
- W1976030533
- Cited by
- 708
- References
- 0
- Citations by year
- 2026: 16 · 2025: 32 · 2024: 35 · 2023: 23 · 2022: 28 · 2021: 31 · 2020: 20 · 2019: 40 · 2018: 20 · 2017: 20 · 2016: 17 · 2015: 16 · 2014: 25 · 2013: 18 · 2012: 10
- FWCI
- 3.22
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Locations
- Monthly Notices of the Royal Astronomical Society (publishedVersion)
- Topics
- Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Cosmology and Gravitation Theories
- Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Galaxies: Formation, Evolution, Phenomena
- Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Stellar, planetary, and galactic studies
- Keywords
- initial conditions of the universe, primordial perturbations, cosmological entropy, hot universe, galaxy clusters, large-scale structure, long-wavelength perturbations, structure formation
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