More scalings from cosmic strings
Abstract We analyze all individual cosmic strings of various lengths in a large ensemble of the global cosmic string networks in the post-inflationary scenario, obtained from numerical simulations on a discrete lattice with N 3 = 40963. A strong evidence for a logarithmically growing spectral index...
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| Format: | Article |
| Language: | English |
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SpringerOpen
2025-07-01
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| Series: | Journal of High Energy Physics |
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| Online Access: | https://doi.org/10.1007/JHEP07(2025)052 |
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| author | Heejoo Kim Minho Son |
| author_facet | Heejoo Kim Minho Son |
| author_sort | Heejoo Kim |
| collection | DOAJ |
| description | Abstract We analyze all individual cosmic strings of various lengths in a large ensemble of the global cosmic string networks in the post-inflationary scenario, obtained from numerical simulations on a discrete lattice with N 3 = 40963. A strong evidence for a logarithmically growing spectral index of the string power spectrum during the evolution is newly reported as our main result. The logarithmic scaling is checked against two different approaches for generating initial random field configurations, namely fat-string type and thermal phase transition. We derive the analytic relation between two power spectra of cosmic strings and axions which should be valid under some assumptions, and the validity of those assumptions is discussed. We argue that our analytic result strongly supports the correlated spectra of cosmic strings and axions. Additionally, we initiate the statistical analysis of the causal dynamics of the cosmic strings. |
| format | Article |
| id | doaj-art-e0f018e0efcc43f69df41249ce34c013 |
| institution | DOAJ |
| issn | 1029-8479 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of High Energy Physics |
| spelling | doaj-art-e0f018e0efcc43f69df41249ce34c0132025-08-20T03:04:08ZengSpringerOpenJournal of High Energy Physics1029-84792025-07-012025713010.1007/JHEP07(2025)052More scalings from cosmic stringsHeejoo Kim0Minho Son1Department of Physics, Korea Advanced Institute of Science and TechnologyDepartment of Physics, Korea Advanced Institute of Science and TechnologyAbstract We analyze all individual cosmic strings of various lengths in a large ensemble of the global cosmic string networks in the post-inflationary scenario, obtained from numerical simulations on a discrete lattice with N 3 = 40963. A strong evidence for a logarithmically growing spectral index of the string power spectrum during the evolution is newly reported as our main result. The logarithmic scaling is checked against two different approaches for generating initial random field configurations, namely fat-string type and thermal phase transition. We derive the analytic relation between two power spectra of cosmic strings and axions which should be valid under some assumptions, and the validity of those assumptions is discussed. We argue that our analytic result strongly supports the correlated spectra of cosmic strings and axions. Additionally, we initiate the statistical analysis of the causal dynamics of the cosmic strings.https://doi.org/10.1007/JHEP07(2025)052Axions and ALPsCosmology of Theories BSMEarly Universe Particle Physics |
| spellingShingle | Heejoo Kim Minho Son More scalings from cosmic strings Journal of High Energy Physics Axions and ALPs Cosmology of Theories BSM Early Universe Particle Physics |
| title | More scalings from cosmic strings |
| title_full | More scalings from cosmic strings |
| title_fullStr | More scalings from cosmic strings |
| title_full_unstemmed | More scalings from cosmic strings |
| title_short | More scalings from cosmic strings |
| title_sort | more scalings from cosmic strings |
| topic | Axions and ALPs Cosmology of Theories BSM Early Universe Particle Physics |
| url | https://doi.org/10.1007/JHEP07(2025)052 |
| work_keys_str_mv | AT heejookim morescalingsfromcosmicstrings AT minhoson morescalingsfromcosmicstrings |