TY - JOUR
T1 - A more attractive scheme for radion stabilization and supercooled phase transition
AU - Fujikura, Kohei
AU - Nakai, Yuichiro
AU - Yamada, Masaki
N1 - Funding Information:
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PY - 2020/2/1
Y1 - 2020/2/1
N2 - 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.
AB - 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.
KW - Cosmology of Theories beyond the SM
KW - Field Theories in Higher Dimensions
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U2 - 10.1007/JHEP02(2020)111
DO - 10.1007/JHEP02(2020)111
M3 - Article
AN - SCOPUS:85079827952
VL - 2020
JO - Journal of High Energy Physics
JF - Journal of High Energy Physics
SN - 1126-6708
IS - 2
M1 - 111
ER -