{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:JF7CXUBU3VKGNVOQPDPRQCM2PM","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"8b0402d0f11925ca07ce24f76682a99e9413d89b52c22809a01198efd11032d4","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2013-12-06T15:53:18Z","title_canon_sha256":"33c430994a8027e3d62f52c5851fc6632730de15af7edaa4cf76f2b515c362df"},"schema_version":"1.0","source":{"id":"1312.1898","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1312.1898","created_at":"2026-05-18T01:45:57Z"},{"alias_kind":"arxiv_version","alias_value":"1312.1898v3","created_at":"2026-05-18T01:45:57Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1312.1898","created_at":"2026-05-18T01:45:57Z"},{"alias_kind":"pith_short_12","alias_value":"JF7CXUBU3VKG","created_at":"2026-05-18T12:27:49Z"},{"alias_kind":"pith_short_16","alias_value":"JF7CXUBU3VKGNVOQ","created_at":"2026-05-18T12:27:49Z"},{"alias_kind":"pith_short_8","alias_value":"JF7CXUBU","created_at":"2026-05-18T12:27:49Z"}],"graph_snapshots":[{"event_id":"sha256:5ee0a9ecce490d3049cdb20b4f0afb3dbd01c0c0626ab128d3039b9a4a3970c2","target":"graph","created_at":"2026-05-18T01:45:57Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"There can arise ubiquitous ultra-light scalar fields in the Universe, such as the pseudo-Goldstone bosons from the spontaneous breaking of an approximate symmetry, which can make a partial contribution to the dark matter and affect the large scale structure of the Universe. While the properties of those ultra-light dark matter are heavily model dependent and can vary in a wide range, we develop a model-independent analysis to forecast the constraints on their mass and abundance using futuristic but realistic 21 cm observables as well as CMB fluctuations, including CMB lensing measurements. Avo","authors_text":"Joseph Silk, Kenji Kadota, Kiyomoto Ichiki, Yi Mao","cross_cats":["astro-ph.CO"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2013-12-06T15:53:18Z","title":"Cosmologically probing ultra-light particle dark matter using 21 cm signals"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1312.1898","kind":"arxiv","version":3},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:f6a41ea337eb1d927084f8645744d63d50533511118fd7bd9bdeece4e29847ad","target":"record","created_at":"2026-05-18T01:45:57Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"8b0402d0f11925ca07ce24f76682a99e9413d89b52c22809a01198efd11032d4","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2013-12-06T15:53:18Z","title_canon_sha256":"33c430994a8027e3d62f52c5851fc6632730de15af7edaa4cf76f2b515c362df"},"schema_version":"1.0","source":{"id":"1312.1898","kind":"arxiv","version":3}},"canonical_sha256":"497e2bd034dd5466d5d078df18099a7b36ac716799f5faf113559398a5874741","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"497e2bd034dd5466d5d078df18099a7b36ac716799f5faf113559398a5874741","first_computed_at":"2026-05-18T01:45:57.825966Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:45:57.825966Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"+H4jCgG/i/sAi0sKWppEZBtFkFqzQ3puls7c0HHHw/7EAXUYD64w5Kc5+DmiRP46tOeUWPnJ8jDHsVDmTlkUAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:45:57.826393Z","signed_message":"canonical_sha256_bytes"},"source_id":"1312.1898","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f6a41ea337eb1d927084f8645744d63d50533511118fd7bd9bdeece4e29847ad","sha256:5ee0a9ecce490d3049cdb20b4f0afb3dbd01c0c0626ab128d3039b9a4a3970c2"],"state_sha256":"0831c3740c29929188b956bf3b5dfbeb355dfcac20443c3864ad98ccd13b97c5"}