Parity solves the Strong CP problem
Fuente:
arXiv
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| Autore principale: | |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| _version_ | 1866908389736448000 |
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| author | Kuchimanchi, Ravi |
| author_facet | Kuchimanchi, Ravi |
| contents | A recent paper "What can solve the strong CP problem?" goes counter to conventional wisdom by arguing that the universe was in an initial state that combines different eigenstates of $θ$ (of the theta vacuum of QCD), and asserts that for such an initial state, axionless solutions to the Strong CP Problem based on P and CP symmetries will not work. We discuss the nature of the theta vacuum in light of this work, and find that the conventional framing and solutions based on P and CP symmetries are on a firm footing. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2506_01911 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Parity solves the Strong CP problem Kuchimanchi, Ravi High Energy Physics - Phenomenology A recent paper "What can solve the strong CP problem?" goes counter to conventional wisdom by arguing that the universe was in an initial state that combines different eigenstates of $θ$ (of the theta vacuum of QCD), and asserts that for such an initial state, axionless solutions to the Strong CP Problem based on P and CP symmetries will not work. We discuss the nature of the theta vacuum in light of this work, and find that the conventional framing and solutions based on P and CP symmetries are on a firm footing. |
| title | Parity solves the Strong CP problem |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2506.01911 |