Gravitational Waves from first-order phase transition and domain wall. (arXiv:2001.04741v1 [hep-ph])

<a href="http://arxiv.org/find/hep-ph/1/au:+Zhou_R/0/1/0/all/0/1">Ruiyu Zhou</a>, <a href="http://arxiv.org/find/hep-ph/1/au:+Yang_J/0/1/0/all/0/1">Jing Yang</a>, <a href="http://arxiv.org/find/hep-ph/1/au:+Bian_L/0/1/0/all/0/1">Ligong Bian</a>

In many particle physics models, domain wall can form during the phase

transition process after discrete symmetry breaking. We study the scenario

within a complex singlet extended Standard Model framework, where a strongly

first order phase transition can occur depending on the hidden scalar mass and

the mixing between the extra heavy Higgs and the SM Higgs mass. The

gravitational wave spectrum is of a typical two-peak shape, the amplitude and

the peak from the strongly first order phase transition is able to be probed by

the future gravitational wave detectors, and the one locates around the peak

from the domain wall decay is far beyond the capability of the projected IPTA,

and SKA.

In many particle physics models, domain wall can form during the phase

transition process after discrete symmetry breaking. We study the scenario

within a complex singlet extended Standard Model framework, where a strongly

first order phase transition can occur depending on the hidden scalar mass and

the mixing between the extra heavy Higgs and the SM Higgs mass. The

gravitational wave spectrum is of a typical two-peak shape, the amplitude and

the peak from the strongly first order phase transition is able to be probed by

the future gravitational wave detectors, and the one locates around the peak

from the domain wall decay is far beyond the capability of the projected IPTA,

and SKA.

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