The axion potential in quark matter
We study the QCD axion potential in hot and dense quark matter, within an NJL-like model that includes the coupling of the axion to quarks. Firstly we compute the effect of the chiral QCD crossover on the axion mass and self-coupling. Then, we compute the axion potential and study the domain walls....
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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EDP Sciences
2022-01-01
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| Series: | EPJ Web of Conferences |
| Online Access: | https://www.epj-conferences.org/articles/epjconf/pdf/2022/14/epjconf_qcd@work2022_00024.pdf |
| _version_ | 1811218967731109888 |
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| author | Ruggieri M. Castillo D.E.A. Grunfeld A.G. Zhang Bonan |
| author_facet | Ruggieri M. Castillo D.E.A. Grunfeld A.G. Zhang Bonan |
| author_sort | Ruggieri M. |
| collection | DOAJ |
| description | We study the QCD axion potential in hot and dense quark matter, within an NJL-like model that includes the coupling of the axion to quarks. Firstly we compute the effect of the chiral QCD crossover on the axion mass and self-coupling. Then, we compute the axion potential and study the domain walls. We find that the energy barrier between two adjacent vacuum states decreases in the chirally restored phase: this results in a lower surface tension of the walls. Finally we comment on the possibility of abundant production of walls in hot and dense quark matter. |
| first_indexed | 2024-04-12T07:17:56Z |
| format | Article |
| id | doaj.art-120d2e43053348759f782c83d98c3761 |
| institution | Directory Open Access Journal |
| issn | 2100-014X |
| language | English |
| last_indexed | 2024-04-12T07:17:56Z |
| publishDate | 2022-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | EPJ Web of Conferences |
| spelling | doaj.art-120d2e43053348759f782c83d98c37612022-12-22T03:42:25ZengEDP SciencesEPJ Web of Conferences2100-014X2022-01-012700002410.1051/epjconf/202227000024epjconf_qcd@work2022_00024The axion potential in quark matterRuggieri M.0Castillo D.E.A.1Grunfeld A.G.2Zhang Bonan3School of Nuclear Science and Technology, Lanzhou UniversityInstitute of Nuclear Physics, Polish Academy of SciencesCONICET, Godoy Cruz 2290, C1425FQB Ciudad Autónoma de Buenos Aires, Argentina and Departamento de Física, Comisión Nacional de Energía AtómicaSchool of Nuclear Science and Technology, Lanzhou UniversityWe study the QCD axion potential in hot and dense quark matter, within an NJL-like model that includes the coupling of the axion to quarks. Firstly we compute the effect of the chiral QCD crossover on the axion mass and self-coupling. Then, we compute the axion potential and study the domain walls. We find that the energy barrier between two adjacent vacuum states decreases in the chirally restored phase: this results in a lower surface tension of the walls. Finally we comment on the possibility of abundant production of walls in hot and dense quark matter.https://www.epj-conferences.org/articles/epjconf/pdf/2022/14/epjconf_qcd@work2022_00024.pdf |
| spellingShingle | Ruggieri M. Castillo D.E.A. Grunfeld A.G. Zhang Bonan The axion potential in quark matter EPJ Web of Conferences |
| title | The axion potential in quark matter |
| title_full | The axion potential in quark matter |
| title_fullStr | The axion potential in quark matter |
| title_full_unstemmed | The axion potential in quark matter |
| title_short | The axion potential in quark matter |
| title_sort | axion potential in quark matter |
| url | https://www.epj-conferences.org/articles/epjconf/pdf/2022/14/epjconf_qcd@work2022_00024.pdf |
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