Comment on 'More Axions from Strings'
| Autor: | Hindmarsh, Mark, Lizarraga, Joanes, Lopez-Eiguren, Asier, Urrestilla, Jon |
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| Rok vydání: | 2021 |
| Předmět: | |
| Druh dokumentu: | Working Paper |
| Popis: | We comment on a claim that axion strings show a long-term logarithmic increase in the number of Hubble lengths per Hubble volume [arXiv:2007.04990], thereby violating the standard "scaling" expectation of an O(1) constant. We demonstrate that the string density data presented in [arXiv:2007.04990] are consistent with standard scaling, at a string density consistent with that obtained by us [arXiv:1908.03522, arXiv:2102.07723] and other groups. A transient slow growth in Hubble lengths per Hubble volume towards its constant scaling value is explained by standard network modelling [arXiv:2102.07723]. Comment: 10 pages, 4 figures. Revised version: interpretation error corrected, improved discussion, global fit added |
| Databáze: | arXiv |
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