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arXiv · 1312.0435

Cosmology with quantum matter and a classical gravitational field: the approach of configuration-space ensembles

Marcel Reginatto
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Abstract

I consider the formulation of hybrid cosmological models that consists of a classical gravitational field interacting with a quantized massive scalar field in the formalism of ensembles on configuration space. This is a viable approach that provides an alternative to semiclassical gravity. I discuss a particular, highly nonclassical solution in two approximations, minisuperspace and spherically-symmetric midisuperspace. In both cases, the coupling of the quantum scalar field and classical gravitational field leads to a cosmological model which has a quantized radius of the universe.

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Marcel Reginatto. 2013-12-02. Cosmology with quantum matter and a classical gravitational field: the approach of configuration-space ensembles. https://doi.org/10.1088/1742-6596/442/1/012009

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