TY - JOUR
T1 - Electroweak vacuum stabilized by moduli during/after inflation
AU - Ema, Yohei
AU - Mukaida, Kyohei
AU - Nakayama, Kazunori
N1 - Funding Information:
This work was supported by the Grant-in-Aid for Scientific Research on Scientific Research A (No. 26247042 [KN]), Young Scientists B (No. 26800121 [KN]) and Innovative Areas (No. 26104009 [KN], No. 15H05888 [KN]), World Premier International Research Center Initiative (WPI Initiative), MEXT , Japan (K.M. and K.N.), JSPS Research Fellowships for Young Scientists (Y.E. and K.M.), and the Program for Leading Graduate Schools, MEXT , Japan (Y.E.).
Publisher Copyright:
© 2016 The Author(s)
PY - 2016/10/10
Y1 - 2016/10/10
N2 - It is known that the present electroweak vacuum is likely to be metastable and it may lead to a serious instability during/after inflation. We propose a simple solution to the problem of vacuum instability during/after inflation. If there is a moduli field which has Planck-suppressed interactions with the standard model fields, the Higgs quartic coupling in the early universe naturally takes a different value from the present one. A slight change of the quartic coupling in the early universe makes the Higgs potential absolutely stable and hence we are free from the vacuum instability during/after inflation.
AB - It is known that the present electroweak vacuum is likely to be metastable and it may lead to a serious instability during/after inflation. We propose a simple solution to the problem of vacuum instability during/after inflation. If there is a moduli field which has Planck-suppressed interactions with the standard model fields, the Higgs quartic coupling in the early universe naturally takes a different value from the present one. A slight change of the quartic coupling in the early universe makes the Higgs potential absolutely stable and hence we are free from the vacuum instability during/after inflation.
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U2 - 10.1016/j.physletb.2016.08.046
DO - 10.1016/j.physletb.2016.08.046
M3 - Article
AN - SCOPUS:84986317242
SN - 0370-2693
VL - 761
SP - 419
EP - 423
JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
ER -