VACUUM FLUCTUATIONS IN COSMOLOGICAL MODELS WITH COMPACTIFIED DIMENSIONS

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Submitted: 2025-02-27; Published: 2025-02-27

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Abstract

We study quantum effects of scalar fields in cosmological models of Friedman–Robertson–Walker with a power-low scale factor and spatial topology R2time(Sl)q. Recurrent formulae are obtained for positive-frequency Wightman function, vacuum expectation values of the field squared and energy density.