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Casimir energy in finite expanding universes: a prelude

Sandro Silva e Costa·Reuven Opher
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Abstract

We present the Green's functions that are the solutions of the massive Klein-Gordon equation for a scalar field with non-minimal coupling to gravitation for several static and expanding cosmological models. An important feature of such functions is that they can be used to study the appearence of a Casimir energy in models of the universe with compact spatial sections.

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Sandro Silva e Costa, Reuven Opher. 2002-12-06. Casimir energy in finite expanding universes: a prelude. https://arxiv.org/abs/astro-ph/0212157

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