NANOGrav and other PTA signals and PBH from the modified Higgs inflation
Abstract This study investigates the classical Higgs inflation model with a modified Higgs potential featuring a dip. We examine the implications of this modification on the generation of curvature perturbations, stochastic gravitational wave production, and the potential formation of primordial bla...
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| Format: | Article |
| Language: | English |
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SpringerOpen
2024-09-01
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| Series: | European Physical Journal C: Particles and Fields |
| Online Access: | https://doi.org/10.1140/epjc/s10052-024-13268-6 |
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| author | Kingman Cheung C. J. Ouseph Po-Yan Tseng |
| author_facet | Kingman Cheung C. J. Ouseph Po-Yan Tseng |
| author_sort | Kingman Cheung |
| collection | DOAJ |
| description | Abstract This study investigates the classical Higgs inflation model with a modified Higgs potential featuring a dip. We examine the implications of this modification on the generation of curvature perturbations, stochastic gravitational wave production, and the potential formation of primordial black holes (PBHs). Unlike the classical model, the modified potential allows for enhanced power spectra and the existence of PBHs within a wide mass range $$1.5\times 10^{20}$$ 1.5 × 10 20 g– $$9.7\times 10^{32}$$ 9.7 × 10 32 g. We identify parameter space regions that align with inflationary constraints and have the potential to contribute significantly to the observed dark matter content. Additionally, the study explores the consistency of the obtained parameter space with cosmological constraints and discusses the implications for explaining the observed excess in gravitational wave PTA signals, particularly in the NANOGrav experiment. Overall, this investigation highlights the relevance of the modified Higgs potential in the classical Higgs inflation model, shedding light on the formation of PBHs, the nature of dark matter, and the connection to gravitational wave observations. |
| format | Article |
| id | doaj-art-79f942f7056340e895db9ab17d0078ca |
| institution | Kabale University |
| issn | 1434-6052 |
| language | English |
| publishDate | 2024-09-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | European Physical Journal C: Particles and Fields |
| spelling | doaj-art-79f942f7056340e895db9ab17d0078ca2024-11-17T12:44:52ZengSpringerOpenEuropean Physical Journal C: Particles and Fields1434-60522024-09-0184911810.1140/epjc/s10052-024-13268-6NANOGrav and other PTA signals and PBH from the modified Higgs inflationKingman Cheung0C. J. Ouseph1Po-Yan Tseng2Department of Physics, National Tsing Hua UniversityDepartment of Physics, National Tsing Hua UniversityDepartment of Physics, National Tsing Hua UniversityAbstract This study investigates the classical Higgs inflation model with a modified Higgs potential featuring a dip. We examine the implications of this modification on the generation of curvature perturbations, stochastic gravitational wave production, and the potential formation of primordial black holes (PBHs). Unlike the classical model, the modified potential allows for enhanced power spectra and the existence of PBHs within a wide mass range $$1.5\times 10^{20}$$ 1.5 × 10 20 g– $$9.7\times 10^{32}$$ 9.7 × 10 32 g. We identify parameter space regions that align with inflationary constraints and have the potential to contribute significantly to the observed dark matter content. Additionally, the study explores the consistency of the obtained parameter space with cosmological constraints and discusses the implications for explaining the observed excess in gravitational wave PTA signals, particularly in the NANOGrav experiment. Overall, this investigation highlights the relevance of the modified Higgs potential in the classical Higgs inflation model, shedding light on the formation of PBHs, the nature of dark matter, and the connection to gravitational wave observations.https://doi.org/10.1140/epjc/s10052-024-13268-6 |
| spellingShingle | Kingman Cheung C. J. Ouseph Po-Yan Tseng NANOGrav and other PTA signals and PBH from the modified Higgs inflation European Physical Journal C: Particles and Fields |
| title | NANOGrav and other PTA signals and PBH from the modified Higgs inflation |
| title_full | NANOGrav and other PTA signals and PBH from the modified Higgs inflation |
| title_fullStr | NANOGrav and other PTA signals and PBH from the modified Higgs inflation |
| title_full_unstemmed | NANOGrav and other PTA signals and PBH from the modified Higgs inflation |
| title_short | NANOGrav and other PTA signals and PBH from the modified Higgs inflation |
| title_sort | nanograv and other pta signals and pbh from the modified higgs inflation |
| url | https://doi.org/10.1140/epjc/s10052-024-13268-6 |
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