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.

Fulltext pdf (189 KB)
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

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