Gravitational waves from walls bounded by strings in SO(10) model of pseudo-Goldstone dark matter
May 19, 2023
8 pages
Published in:
- Phys.Lett.B 845 (2023) 138127
- Published: Aug 19, 2023
e-Print:
- 2305.11775 [hep-ph]
DOI:
- 10.1016/j.physletb.2023.138127 (publication)
View in:
Citations per year
Abstract: (Elsevier B.V.)
We explore the gravitational wave spectrum generated by string-wall structures in an () based scenario of pseudo-Goldstone boson dark matter (pGDM) particle. This dark matter candidate is a linear combination of the Standard Model (SM) singlets present in the 126 and 16 dimensional Higgs fields. The Higgs 126-plet vacuum expectation value (VEV) leaves unbroken the subgroup of , the center of . Among other things, this yields topologically stable cosmic strings with a string tension . The subsequent (spontaneous) breaking of at a significantly lower scale by the 16-plet VEV leads to the appearance of domain walls bounded by the strings produced earlier. We display the gravitational wave spectrum for Gμ values varying between and ( - 1014 GeV), and - 102 TeV range (G denotes Newton's constant.) These predictions can be tested, as we show, by a variety of (proposed) experiments including LISA, ET, CE and others.Note:
- 8 pages, 3 figures, version published in PLB
- gravitational radiation: spectrum
- boson: dark matter
- gravitation: fundamental constant
- cosmic string: stability
- SO(10)
- Goldstone particle
- string
- GeV
- Spin(10)
- domain wall
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