QCD θ-vacuum energy and axion properties
Abstract At low energies, the strong interaction is governed by the Goldstone bosons associated with the spontaneous chiral symmetry breaking, which can be systematically described by chiral perturbation theory. In this paper, we apply this theory to study the θ-vacuum energy density and hence the Q...
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| Autori principali: | , , , , |
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| Natura: | Artigo |
| Lingua: | Inglês |
| Pubblicazione: |
SpringerOpen
2020-05-01
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| Serie: | Journal of High Energy Physics |
| Soggetti: | |
| Accesso online: | http://link.springer.com/article/10.1007/JHEP05(2020)001 |
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