{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:2LWXXCMOPWVSSI6GYHHN2VOME7","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":"13797f1c497837e62f224dadd1f6f7f496ffc084ca32532b44b7bbf0181e40d9","cross_cats_sorted":["gr-qc","hep-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2023-07-05T14:23:49Z","title_canon_sha256":"2be4ac2ce05ba1edc80bc50e658551fd1739a2055e821b9189cf37ff574bc6f2"},"schema_version":"1.0","source":{"id":"2307.02322","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2307.02322","created_at":"2026-07-05T08:45:21Z"},{"alias_kind":"arxiv_version","alias_value":"2307.02322v3","created_at":"2026-07-05T08:45:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2307.02322","created_at":"2026-07-05T08:45:21Z"},{"alias_kind":"pith_short_12","alias_value":"2LWXXCMOPWVS","created_at":"2026-07-05T08:45:21Z"},{"alias_kind":"pith_short_16","alias_value":"2LWXXCMOPWVSSI6G","created_at":"2026-07-05T08:45:21Z"},{"alias_kind":"pith_short_8","alias_value":"2LWXXCMO","created_at":"2026-07-05T08:45:21Z"}],"graph_snapshots":[{"event_id":"sha256:014f01df9d12a90834f916d78760467826f135eee84369b3fb6991341ba79f61","target":"graph","created_at":"2026-07-05T08:45:21Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2307.02322/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We demonstrate that the recently announced signal for a stochastic gravitational wave background (SGWB) from pulsar timing array (PTA) observations, if attributed to new physics, is compatible with primordial GW production due to axion-gauge dynamics during inflation. More specifically we find that axion-$U(1)$ models may lead to sufficient particle production to explain the signal while simultaneously source some fraction of sub-solar mass primordial black holes (PBHs) as a signature. Moreover there is a parity violation in GW sector, hence the model suggests chiral GW search as a concrete ta","authors_text":"Alexandros Papageorgiou, Caner Unal, Ippei Obata","cross_cats":["gr-qc","hep-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2023-07-05T14:23:49Z","title":"Axion-Gauge Dynamics During Inflation as the Origin of Pulsar Timing Array Signals and Primordial Black Holes"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2307.02322","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":"sha256:9ebacf498de01c2aaa45b99dde0e5c9715450332515203642530fcca3ea7ab27","target":"record","created_at":"2026-07-05T08:45:21Z","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":"13797f1c497837e62f224dadd1f6f7f496ffc084ca32532b44b7bbf0181e40d9","cross_cats_sorted":["gr-qc","hep-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2023-07-05T14:23:49Z","title_canon_sha256":"2be4ac2ce05ba1edc80bc50e658551fd1739a2055e821b9189cf37ff574bc6f2"},"schema_version":"1.0","source":{"id":"2307.02322","kind":"arxiv","version":3}},"canonical_sha256":"d2ed7b898e7dab2923c6c1cedd55cc27f30e957edc9cb97b2067eec1059d317c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d2ed7b898e7dab2923c6c1cedd55cc27f30e957edc9cb97b2067eec1059d317c","first_computed_at":"2026-07-05T08:45:21.184491Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T08:45:21.184491Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"yJru3tULn6uHrrXgep7fPz8hypJicWS8HuePBpYBvKnynulxUT6Xbgqu6+F3OT3E4sL28FmTrVdjywJo2bHlDA==","signature_status":"signed_v1","signed_at":"2026-07-05T08:45:21.184896Z","signed_message":"canonical_sha256_bytes"},"source_id":"2307.02322","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9ebacf498de01c2aaa45b99dde0e5c9715450332515203642530fcca3ea7ab27","sha256:014f01df9d12a90834f916d78760467826f135eee84369b3fb6991341ba79f61"],"state_sha256":"ebc98b70ac409b983816c0b5c8fe1048d6b792dba112bb0fd0a0e71db72480ea"}