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Quantum theory of scalar field in isotropic world

K. A. Bronnikov·E. A. Tagirov
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Abstract

Fock representations are constructed for a free scalar field in the closed and quasi-Euclidean isotropic cosmological models. Invariance of their cyclic vector (vacuum) under isometries and the correspondence principle single out a class of unitarily equivalent representations.

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K. A. Bronnikov, E. A. Tagirov. 2004-12-30. Quantum theory of scalar field in isotropic world. https://arxiv.org/abs/gr-qc/0412138

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