Expanding Universe and Dynamical Compactification Using Yang-Mills Instantons
High Energy Physics - Theory
2018-12-18 v3 General Relativity and Quantum Cosmology
High Energy Physics - Phenomenology
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.
Cite
@article{arxiv.1810.12291,
title = {Expanding Universe and Dynamical Compactification Using Yang-Mills Instantons},
author = {Kyung Kiu Kim and Seoktae Koh and Hyun Seok Yang},
journal= {arXiv preprint arXiv:1810.12291},
year = {2018}
}
Comments
v3; 26 pages, 6 figures, version to be published in JHEP