The primordial black holes solution to the cosmological monopole problem
Abstract Recently, the pulsar timing array (PTA) collaborations, including CPTA, EPTA, NANOGrav, and PPTA, announced that they detected a stochastic gravitational wave background spectrum in the nHz band. This may be relevant to the cosmological phase transition suggested by some models. Magnetic mo...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2024-01-01
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| Series: | European Physical Journal C: Particles and Fields |
| Online Access: | https://doi.org/10.1140/epjc/s10052-024-12387-4 |
| _version_ | 1797233344687112192 |
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| author | Xin-Zhe Wang Can-Min Deng |
| author_facet | Xin-Zhe Wang Can-Min Deng |
| author_sort | Xin-Zhe Wang |
| collection | DOAJ |
| description | Abstract Recently, the pulsar timing array (PTA) collaborations, including CPTA, EPTA, NANOGrav, and PPTA, announced that they detected a stochastic gravitational wave background spectrum in the nHz band. This may be relevant to the cosmological phase transition suggested by some models. Magnetic monopoles and primordial black holes (PBHs), two unsolved mysteries in the universe, may also have their production related to the cosmological phase transition. Inspired by that, we revisit the model proposed by Stojkovic and Freese, which involves PBHs accretion to solve the cosmological magnetic monopole problem. We further develop it by considering the increase in the mass of the PBHs during accretion and taking the effect of Hawking radiation into account. With these new considerations, we find that solutions to the problem still exist within a certain parameter space. In addition, we also generalize the analysis to PBHs with an extended distribution in mass. This may be a more interesting scenario because PBHs that have accreted magnetic monopoles might produce observable electromagnetic signals if they are massive enough to survive in the late universe. |
| first_indexed | 2024-03-08T14:13:26Z |
| format | Article |
| id | doaj.art-aedde0e349e24d09a1e2d8e447053e2f |
| institution | Directory Open Access Journal |
| issn | 1434-6052 |
| language | English |
| last_indexed | 2024-04-24T16:14:41Z |
| publishDate | 2024-01-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | European Physical Journal C: Particles and Fields |
| spelling | doaj.art-aedde0e349e24d09a1e2d8e447053e2f2024-03-31T11:32:36ZengSpringerOpenEuropean Physical Journal C: Particles and Fields1434-60522024-01-018411810.1140/epjc/s10052-024-12387-4The primordial black holes solution to the cosmological monopole problemXin-Zhe Wang0Can-Min Deng1Guangxi Key Laboratory for Relativistic Astrophysics, Department of Physics, Guangxi UniversityGuangxi Key Laboratory for Relativistic Astrophysics, Department of Physics, Guangxi UniversityAbstract Recently, the pulsar timing array (PTA) collaborations, including CPTA, EPTA, NANOGrav, and PPTA, announced that they detected a stochastic gravitational wave background spectrum in the nHz band. This may be relevant to the cosmological phase transition suggested by some models. Magnetic monopoles and primordial black holes (PBHs), two unsolved mysteries in the universe, may also have their production related to the cosmological phase transition. Inspired by that, we revisit the model proposed by Stojkovic and Freese, which involves PBHs accretion to solve the cosmological magnetic monopole problem. We further develop it by considering the increase in the mass of the PBHs during accretion and taking the effect of Hawking radiation into account. With these new considerations, we find that solutions to the problem still exist within a certain parameter space. In addition, we also generalize the analysis to PBHs with an extended distribution in mass. This may be a more interesting scenario because PBHs that have accreted magnetic monopoles might produce observable electromagnetic signals if they are massive enough to survive in the late universe.https://doi.org/10.1140/epjc/s10052-024-12387-4 |
| spellingShingle | Xin-Zhe Wang Can-Min Deng The primordial black holes solution to the cosmological monopole problem European Physical Journal C: Particles and Fields |
| title | The primordial black holes solution to the cosmological monopole problem |
| title_full | The primordial black holes solution to the cosmological monopole problem |
| title_fullStr | The primordial black holes solution to the cosmological monopole problem |
| title_full_unstemmed | The primordial black holes solution to the cosmological monopole problem |
| title_short | The primordial black holes solution to the cosmological monopole problem |
| title_sort | primordial black holes solution to the cosmological monopole problem |
| url | https://doi.org/10.1140/epjc/s10052-024-12387-4 |
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