Cyclic entropy: An alternative to inflationary cosmology
Open accessAbstract
We address how to construct an infinitely cyclic universe model. A major consideration is to make the entropy cyclic which requires the entropy to be reset to zero in each cycle expansion [Formula: see text] turnaround [Formula: see text] contraction [Formula: see text] bounce [Formula: see text] etc. Here, we reset entropy at the turnaround by selecting the introverse (visible universe) from the extroverse which is generated by the accelerated expansion. In the model, the observed homogeneity is explained by the low entropy at the bounce. The observed flatness arises from the contraction together with the reduction in size between the expanding and contracting universe. The present flatness is predicted to be very precise.
Integrity signals
Registry
Cites
Statistics
Claims the paper makes
Claims other papers make about this one
Each is checked against this paper’s own text: does it say what the citing paper says it does?
The matter contribution to entropy rises with respect to the contribution at the bounce time due to the second law of thermodynamics.
“On the other hand, the matter contribution to entropy will in general rise with respect to the contribution at the bounce time, t = t b , due to the second law of thermodynamics, i.e. for the entropy values in the observable Universe we have S(t) mat = S(t b ) mat + S mat (t) (with S mat (t) > 0) [50].”
From Geodesically complete cyclic cosmologies and entropy (2024) · cites this paper as [50]
Cited by
Sorted by citations
Geodesically complete cyclic cosmologies and entropy
Pavlović, P., & Sossich, M. (2024) · The European Physical Journal C · doi:10.1140/epjc/s10052-024-12621-z · Cited by 3 · see citing works
- Authors
- Frampton, P. H.
- Affiliations
- Oxford, UK
- Corresponding author
- Frampton, Paul Howard
- Venue
- International Journal of Modern Physics A
- Publisher
- World Scientific Pub Co Pte Lt
- Published
- 2015-07-22
- Volume
- 30
- Issue
- 21
- Pages
- 1550129
- ISSN
- 0217-751X (ISSN-L)
- 1793-656X
- OpenAlex
- W1483551489
- Cited by
- 14
- References
- 0
- Citations by year
- 2026: 1 · 2024: 1 · 2023: 1 · 2022: 1 · 2020: 2 · 2018: 1 · 2017: 2 · 2016: 4 · 2015: 1
- FWCI
- 1.52
- Type
- journal article
- Language
- en
- Open access
- green
- arxiv.org
- Locations
- International Journal of Modern Physics A (publishedVersion)
- arXiv (Cornell University) (submittedVersion)
- arXiv (Cornell University)
- Topics
- Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Cosmology and Gravitation Theories
- Physical Sciences › Physics and Astronomy › Statistical and Nonlinear Physics › Noncommutative and Quantum Gravity Theories
- Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Advanced Differential Geometry Research
- Keywords
- cyclic cosmology, bounce cosmology, turnaround, cosmic homogeneity, cosmic flatness, cosmic acceleration
About these checks
Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.
Statistics and arithmetic are recomputed, not judged.
Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.
What counts as a claim ›How we measure confidence ›How we check this ›
Are you an author, or do you see a problem with this page? Request a review
