Gravitational waves from Higgs domain walls

Naoya Kitajima; Fuminobu Takahashi

doi:10.1016/j.physletb.2015.04.040

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arXiv · 1502.03725

Gravitational waves from Higgs domain walls

Naoya Kitajima·Fuminobu Takahashi

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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.

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Naoya Kitajima, Fuminobu Takahashi. 2015-05-07. Gravitational waves from Higgs domain walls. https://doi.org/10.1016/j.physletb.2015.04.040

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