2024
DOI: 10.1140/epjc/s10052-024-12621-z
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Geodesically complete cyclic cosmologies and entropy

Petar Pavlović,
Marko Sossich

Abstract: We demonstrate that there exists a class of cyclic cosmological models, such that these models can in principle solve the problem of the entropy growth, and are at the same time geodesically complete. We thus show that some recently stated conclusions, according to which cyclic cosmologies solving the problem of entropy growth can not be geodesically complete due to the Borde–Guth–Vilenkin (BGV) theorem, are not justified. We also add a short conceptual discussion on entropy and cyclic cosmology, and present a… Show more

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