Abstract
In view of the time-symmetric nature of the laws of physics, time asymmetry in the universe must arise from “initial” conditions. A fully time-symmetric oscillating model is presented which exists in a highly compressed, highly ordered state att=0 and evolves forward, in the thermodynamic sense, as ∣t ∣ increases. This model offers the possibility of accounting for several fundamental and puzzling aspects of our universe, including matter-antimatter asymmetry, the large entropy per baryon, primordial density enhancements sufficient to form galaxies, and large-scale homogeneity.
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Walstad, A. Time's arrow in an oscillating universe. Found Phys 10, 743–749 (1980). https://doi.org/10.1007/BF00708420
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DOI: https://doi.org/10.1007/BF00708420