Gravitational waves from first-order phase transitions in Majoron models of neutrino mass
Gravitational waves from first-order phase transitions in Majoron models of neutrino mass
We show how the generation of right-handed neutrino masses in Majoron models may be associated with a first-order phase transition and accompanied by the production of a stochastic background of gravitational waves (GWs). We explore different energy scales with only renormalizable operators in the effective potential. If the phase transition occurs above the electroweak scale, the signal can be tested by future interferometers. We consider two possible energy scales for phase transitions below the electroweak scale. If the phase transition occurs at a GeV, the signal can be tested at LISA and provide a complementary cosmological probe to right-handed neutrino searches at the FASER detector. If the phase transition occurs below 100 keV, we find that the peak of the GW spectrum is two or more orders of magnitude below the putative NANOGrav GW signal at low frequencies, but well within reach of the SKA and THEIA experiments. We show how searches of very low frequency GWs are motivated by solutions to the Hubble tension in which ordinary neutrinos interact with the dark sector. We also present general calculations of the phase transition temperature and Euclidean action that apply beyond Majoron models.
Di Bari, Pasquale
3fe21e59-0eff-41bc-8faa-fdd817146418
Marfatia, Danny
64f607f2-e614-48a8-b203-09afe7199d71
Zhou, Ye-Ling
fffbe409-0e06-4d66-a23f-c6d3af213a8b
25 October 2021
Di Bari, Pasquale
3fe21e59-0eff-41bc-8faa-fdd817146418
Marfatia, Danny
64f607f2-e614-48a8-b203-09afe7199d71
Zhou, Ye-Ling
fffbe409-0e06-4d66-a23f-c6d3af213a8b
Di Bari, Pasquale, Marfatia, Danny and Zhou, Ye-Ling
(2021)
Gravitational waves from first-order phase transitions in Majoron models of neutrino mass.
Journal of High Energy Physics.
(doi:10.1007/JHEP10(2021)193).
Abstract
We show how the generation of right-handed neutrino masses in Majoron models may be associated with a first-order phase transition and accompanied by the production of a stochastic background of gravitational waves (GWs). We explore different energy scales with only renormalizable operators in the effective potential. If the phase transition occurs above the electroweak scale, the signal can be tested by future interferometers. We consider two possible energy scales for phase transitions below the electroweak scale. If the phase transition occurs at a GeV, the signal can be tested at LISA and provide a complementary cosmological probe to right-handed neutrino searches at the FASER detector. If the phase transition occurs below 100 keV, we find that the peak of the GW spectrum is two or more orders of magnitude below the putative NANOGrav GW signal at low frequencies, but well within reach of the SKA and THEIA experiments. We show how searches of very low frequency GWs are motivated by solutions to the Hubble tension in which ordinary neutrinos interact with the dark sector. We also present general calculations of the phase transition temperature and Euclidean action that apply beyond Majoron models.
Text
JHEP10(2021)193
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Accepted/In Press date: 5 October 2021
Published date: 25 October 2021
Identifiers
Local EPrints ID: 501419
URI: http://eprints.soton.ac.uk/id/eprint/501419
ISSN: 1126-6708
PURE UUID: 08b2c20e-e513-4a43-a1dc-6ed424e18d95
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Date deposited: 30 May 2025 16:54
Last modified: 21 Aug 2025 04:55
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Author:
Danny Marfatia
Author:
Ye-Ling Zhou
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