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Reheating in inflationary cosmologies: Geometric coupling of the "inflaton" to quantum fields

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We propose a simple geometrical prescription for coupling a test quantum scalar field to an "inflaton" (classical scalar field) in the presence of gravity. When the inflaton stems from the compactification of a Kaluza-Klein theory, the prescription leaves no arbitrariness and amounts to a dimensional reduction of the Klein-Gordon equation. We discuss the possible relevance of this coupling to "reheating" in inflationary cosmologies.

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Reproducció digital del document publicat en format paper, proporcionada per PROLA i http://dx.doi.org/10.1103/PhysRevD.43.1032

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Articles publicats en revistes (Física de la Matèria Condensada)

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Reheating in inflationary cosmologies: Geometric coupling of the "inflaton" to quantum fields