Cosmological Classicalons

Preprint number: CP3-Origins-2011-3
Authors: Felix Berkhahn (Ludwig-Maximilians-Universität), Dennis D. Dietrich (CP3-Origins), and Stefan Hofmann (Ludwig-Maximilians-Universität)
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Generic relevant deformations of Einstein’s gravity theory contain additional degrees of freedom that have a multi-facetted stabilization dynamics on curved spacetimes. We show that these relevant degrees of freedom are self-protected against unitarity violations by the formation of classical field lumps that eventually merge to a new background geometry. The transition is heralded by the massive decay of the original vacuum and evolves through a strong coupling regime. This process fits in the recently proposed classicalization mechanism and extends it further to free field dynamics on curved backgrounds.