{"paper":{"title":"On the origin of dark matter axions","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"E.P.S. Shellard, R.A. Battye","submitted_at":"1998-08-20T16:53:03Z","abstract_excerpt":"We discuss the possible sources of dark matter axions in the early universe. In the standard thermal scenario, an axion string network forms at the Peccei-Quinn phase transition $T\\sim \\fa$ and then radiatively decays into a cosmological background of axions; to be the dark matter, these axions must have a mass $\\ma \\sim 100 \\mu eV$ with specified large uncertainties. An inflationary phase with a reheat temperature below the PQ-scale $T_{reh} \\lapp \\fa$ can also produce axion strings through quantum fluctuations, provided that the Hubble parameter during inflation is large $H_1 \\gapp \\fa$; thi"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/9808220","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}