A more attractive scheme for radion stabilization and supercooled phase transition

Kohei Fujikura, Yuichiro Nakai, Masaki Yamada

Research output: Contribution to journalArticlepeer-review

19 Citations (Scopus)


We propose a new radion stabilization mechanism in the Randall-Sundrum spacetime, introducing a bulk SU(NH) gauge field which confines at a TeV scale. It turns out that the radion is stabilized by the balance between a brane tension and a pressure due to the Casimir energy of the strong SU(NH) gauge field. We investigate the phase transition between the Randall-Sundrum (compactified) spacetime and a de-compactified spacetime and determine the parameter regime in which eternal (old) inflation is avoided and the phase transition can be completed. In comparison to the Goldberger-Wise mechanism, the 5D Planck mass can be larger than the AdS curvature and a classical description of the gravity is reliable in our stabilization mechanism. We also discuss the effect of the phase transition in cosmology such as an entropy dilution and a production of gravitational waves.

Original languageEnglish
Article number111
JournalJournal of High Energy Physics
Issue number2
Publication statusPublished - 2020 Feb 1
Externally publishedYes


  • Cosmology of Theories beyond the SM
  • Field Theories in Higher Dimensions

ASJC Scopus subject areas

  • Nuclear and High Energy Physics


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