The holographic principle is applied to a description of the Universe in the early stage of its evolution. As an example, we examine a cosmological model with a bounce with subsequent transition to the early stage of inflation. We investigate cosmological models based on a viscous liquid with a generalized equation of state in terms of the holographic cutoff proposed by Nojiri and Odintsov. Within the framework of these models, we have calculated the infrared radius in terms of the particle horizon or the event horizon. Energy conservation laws are obtained from the holographic point of view. The viscous liquid describing the bounce and the early Universe is presented as a generalization of holographic energy.
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Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, No. 9, pp. 26–29, September, 2020.
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Makarenko, A.N., Timoshkin, A.V. Holographic Description of the Early Universe. Russ Phys J 63, 1474–1478 (2021). https://doi.org/10.1007/s11182-021-02193-w
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DOI: https://doi.org/10.1007/s11182-021-02193-w