Journal
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
Volume -, Issue 3, Pages -Publisher
IOP Publishing Ltd
DOI: 10.1088/1475-7516/2022/03/046
Keywords
dark matter theory; gravitational waves and CMBR polarization
Funding
- Centro de Fisica Teorica e Computacional da Universidade de Lisboa (CFTC-UL) through the Portuguese Foundation for Science and Technology (FCT) [UIDB/00618/2020, UIDP/00618/2020]
- FCT [PTDC/FIS-PAR/31000/2017, CERN/FIS-PAR/0014/2019]
- National Science Centre, Poland
- HARMONIA project [UMO-2015/18/M/ST2/00518]
- Center for Research and Development in Mathematics and Applications (CIDMA) through FCT [UIDB/04106/2020, UIDP/04106/2020]
- national funds (OE), through FCT, I.P.
- Swedish Research Council [2016-05996]
- European Research Council (ERC) under the European Union [668679]
- FCT Advanced Computing Project [CPCA/A00/7395/2020]
- FEDER [022153]
- European Union ERDF
- Comunitat Valenciana
- FCT
- [CERN/FIS-PAR/0002/2019]
- [PTDC/FIS-AST/3041/2020]
- Fundação para a Ciência e a Tecnologia [UIDP/00618/2020] Funding Source: FCT
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In this work, we discuss two different phases of a complex singlet extension of the Standard Model (SM) together with an extension that also includes new fermion fields. It is shown that in some scenarios, it is possible to detect primordial gravitational waves (GWs), and the precision in the determination of the SM parameters has a notable impact on the strength of the GWs spectrum.
In this work we discuss two different phases of a complex singlet extension of the Standard Model (SM) together with an extension that also includes new fermion fields, in particular, a Majoron model equipped with an inverse seesaw mechanism. All considered scenarios contain a global U(1) symmetry and allow for first-order phase transitions while only two of them are strong enough to favour the detection of primordial gravitational waves (GWs) in planned experiments such as LISA. In particular, this is shown to be possible in the singlet extension with a non vanishing real VEV at zero temperature and also in the model with extra fermions. In the singlet extension with no additional fermions, the detection of GWs strongly depends on the U(1) symmetry breaking pattern of the scalar potential at zero temperature. We study for the first time the impact of the precision in the determination of the SM parameters on the strength of the GWs spectrum. It turns out that the variation of the SM parameters such as the Higgs boson mass and top quark Yukawa coupling in their allowed experimental ranges has a notable impact on GWs detectability prospects.
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