Issues

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1991

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May

  

Seventieth anniversary of Andrei Dmitrievich Sakharov


Cosmological models of the Universe with reversal of time’s arrow

Cosmological models of the universe with reversal of time's arrow are considered. Formulations are given of the hypothesis of Cosmological CPT symmetry suggested earlier by the writer, and of the hypothesis of an open model with many sheets, with negative spatial curvature, and with possible violation of CTT symmetry by an invariant combined charge. The statistical paradox of reversibility is discussed for these models. The small dimensionless parameter $\delta_2/a_2$, which characterizes the mean spatial curvature of the universe, is explained as the result of the evolution of the universe through many successive cycles of expansion and contraction.

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Fulltext is also available at DOI: 10.1070/PU1991v034n05ABEH002500
PACS: 98.80.Cq, 11.30.Er (all)
DOI: 10.1070/PU1991v034n05ABEH002500
URL: https://ufn.ru/en/articles/1991/5/k/
Citation: Sakharov A D "Cosmological models of the Universe with reversal of time's arrow" Sov. Phys. Usp. 34 (5) 401–403 (1991)
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Оригинал: Сахаров А Д «Космологические модели Вселенной с поворотом стрелы времени» УФН 161 (5) 81–85 (1991); DOI: 10.3367/UFNr.0161.199105k.0081

References (2) Cited by (1) Similar articles (16) ↓

  1. A.D. Sakharov “Many-sheeted models of the UniverseSov. Phys. Usp. 34 (5) 404–408 (1991)
  2. A.D. Sakharov “Violation of CP in variance, C asymmetry, and baryon asymmetry of the universeSov. Phys. Usp. 34 (5) 392–393 (1991)
  3. A.D. Sakharov “Baryon asymmetry of the universeSov. Phys. Usp. 34 (5) 417–421 (1991)
  4. A.D. Sakharov “Cosmological transitions with changes in the signature of the metricSov. Phys. Usp. 34 (5) 409–413 (1991)
  5. B.L. Al’tshuler “The scientific works of A. D. SakharovSov. Phys. Usp. 34 (5) 362–374 (1991)
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  7. Ya.B. Zel’dovich, A.D. Sakharov “Reactions produced by μ mesons in hydrogenSov. Phys. Usp. 34 (5) 383–384 (1991)
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  11. A.D. Sakharov “Vacuum quantum fluctuations in curved space and the theory of gravitationSov. Phys. Usp. 34 (5) 394–394 (1991)
  12. A.D. Sakharov “Spectral density of eigenvalues of the wave equation and vacuum polarizationSov. Phys. Usp. 34 (5) 395–400 (1991)
  13. A.D. Sakharov “Theory of the magnetic thermonuclear reactor, part IISov. Phys. Usp. 34 (5) 378–382 (1991)
  14. R.H. Dalitz “Andrei Sakharov’s KANDIDAT NAUKI DissertationSov. Phys. Usp. 34 (5) 422–428 (1991)
  15. A.V. Gurevich, K.P. Zybin “Large-scale structure of the Universe. Analytic theory.Phys. Usp. 38 687–722 (1995)
  16. B.L. Al’tshuler, A.O. Barvinskii “Quantum cosmology and physics of transitions with a change of the spacetime signaturePhys. Usp. 39 429–459 (1996)

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