Dynamical Casimir effect with screened scalar fields

What is it about?

Scalar-tensor theories with screened scalar fields like the chameleon model are dark energy or dark matter candidates. In this article, we present the first analysis of the impact of a chameleon field on the dynamical Casimir effect, whose main feature is the particle production associated with a resonant condition of boundary periodic motion in cavities. As a result, we show that particle production is reduced due to the presence of the chameleon field. This work initiates the discussion of the evolution of quantum fields on screened scalar field backgrounds.

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Photo by NASA Hubble Space Telescope on Unsplash

Photo by NASA Hubble Space Telescope on Unsplash

Why is it important?

This article is the first work on the effect of screened scalar fields on particle creation. Since these fields are dark energy/matter candidates, there are extensive ongoing experimental efforts to find or constrain them. We propose a new direction in this line of research by considering the impact of these fields on the dynamical Casimir effect.

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