Journal of High Energy Physics

, 2018:85 | Cite as

Expanding universe and dynamical compactification using Yang-Mills instantons

  • Kyung Kiu Kim
  • Seoktae Koh
  • Hyun Seok YangEmail author
Open Access
Regular Article - Theoretical Physics


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.


Cosmology of Theories beyond the SM Compactification and String Models Field Theories in Higher Dimensions 


Open Access

This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited.


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© The Author(s) 2018

Authors and Affiliations

  1. 1.Department of Physics and AstronomySejong UniversitySeoulKorea
  2. 2.Department of Science EducationJeju National UniversityJejuKorea
  3. 3.Center for Quantum SpacetimeSogang UniversitySeoulKorea

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