Abstract
The effective potential for the Standard Model Higgs field allows two quasi-degenerate vacua; one is our vacuum at the electroweak scale, while the other is at a much higher scale. The latter minimum may be at a scale much smaller than the Planck scale, if the potential is lifted by new physics. This gives rise to a possibility of domain wall formation after inflation. If the high-scale minimum is a local minimum, domain walls are unstable and disappear through violent annihilation processes, producing a significant amount of gravitational waves. We estimate the amount of gravitational waves produced from unstable domain walls in the Higgs potential and discuss detectability with future experiments.
Highlights
Higgs mas & top mass λ becomes negative at high energy scale — new physics? False vacuum in Higgs potential & quantum fluctuation
Necessary condition to avoid early decay of DW:
Summary
Higgs mas & top mass λ becomes negative at high energy scale — new physics? False vacuum in Higgs potential & quantum fluctuation. Naoya Kitajima Tohoku University arXiv:1502.03725 In collaboration with Fuminobu Takahashi (Tohoku University) B-mode Cosmology, 21 Feb. 2015, KEK, Tsukuba
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