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arXiv · 1810.12291

Expanding Universe and Dynamical Compactification Using Yang-Mills Instantons

Kyung Kiu Kim·Seoktae Koh·Hyun Seok Yang
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Abstract

We consider an eight-dimensional Einstein-Yang-Mills theory to explore whether Yang-Mills instantons formed in extra dimensions can induce the dynamical instability of our four-dimensional spacetime. We show that the Yang-Mills instantons in extra dimensions can trigger the expansion of our universe in four-dimensional spacetime as well as the dynamical compactification of extra dimensions. We also discuss a possibility to realize a reheating mechanism via the quantum back-reaction from the contracting tiny internal space with a smeared instanton.

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Kyung Kiu Kim, Seoktae Koh, Hyun Seok Yang. 2018-10-29. Expanding Universe and Dynamical Compactification Using Yang-Mills Instantons. https://doi.org/10.1007/jhep12(2018)085

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