Abstract
Davies1 has argued that the inflationary cosmological scenario2–5 provides a natural explanation for the time asymmetry of the Universe. Here I dispute this argument by noting that the inflationary scenario implicitly invokes time asymmetry with the assumption of an absence of initial spatial correlations. No scenario based on charge-parity-time (CPT)-invariant dynamical laws can explain the time asymmetry apart from postulating or explaining these special initial conditions, as Penrose6,7 has emphasized.
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Page, D. Inflation does not explain time asymmetry. Nature 304, 39–41 (1983). https://doi.org/10.1038/304039a0
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DOI: https://doi.org/10.1038/304039a0
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