Bounds on Higgs and top quark masses from vacuum stability (degeneracy) with gravitational contributions

• 来源期刊: 中国科学（物理学 力学 天文学）
• 年，卷（期）: 2018,（9）
• 页码范围: 37-44
• 页数: 8页
• 语种: 中文

摘要

Based on the two-loop RGE of standard model gauge,top-Yukawa as well as scalar quartic couplings with full one-loop gravitational contributions in harmonic gauge,we study the constraints on the Higgs and top quark mass from the requirement that the other degenerate vacua at the Planck-dominated region exists.Our numerical calculations show that nature will not develop the other degenerate vacua at the Planck-dominated region with current Higgs and top quark masses.On the other hand,requiring the existence of the other degenerate vacua at the Planck-dominated region will constrain the Higgs and top mass to lie at approximately 130 and 174 GeV,respectively.