{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2016:F7XXJWUZBS6HX732FDPEA4CD2L","short_pith_number":"pith:F7XXJWUZ","schema_version":"1.0","canonical_sha256":"2fef74da990cbc7bff7a28de407043d2d7ea770af49888953882f7daf6e5584b","source":{"kind":"arxiv","id":"1608.06882","version":2},"attestation_state":"computed","paper":{"title":"On the strength of the $U_A(1)$ anomaly at the chiral phase transition in $N_f=2$ QCD","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ph","nucl-th"],"primary_cat":"hep-lat","authors_text":"Anthony Francis, Bastian B. Brandt, Daniel Robaina, Hartmut Wittig, Harvey B. Meyer, Owe Philipsen","submitted_at":"2016-08-24T16:11:04Z","abstract_excerpt":"We study the thermal transition of QCD with two degenerate light flavours by lattice simulations using $O(a)$-improved Wilson quarks. Temperature scans are performed at a fixed value of $N_t = (aT)^{-1}=16$, where $a$ is the lattice spacing and $T$ the temperature, at three fixed zero-temperature pion masses between 200 MeV and 540 MeV. In this range we find that the transition is consistent with a broad crossover. As a probe of the restoration of chiral symmetry, we study the static screening spectrum. We observe a degeneracy between the transverse isovector vector and axial-vector channels s"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1608.06882","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-lat","submitted_at":"2016-08-24T16:11:04Z","cross_cats_sorted":["hep-ph","nucl-th"],"title_canon_sha256":"e7d2fb28da27bc0813015aea1f93bbe892b6df0e44ddc54a612f10cf688bc644","abstract_canon_sha256":"87fe7a146aae382957657a122a363fb24087faea6fb93ed790bf0b9bb7719d95"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:50:13.563641Z","signature_b64":"SKleG9Qqxqr+AMJO2w4KVkCrK/jXpFH6ch1hcNHriBQJ8okoY0uVQNcZAhiexjPnBgn/bgQTxuez7QTd26FNAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2fef74da990cbc7bff7a28de407043d2d7ea770af49888953882f7daf6e5584b","last_reissued_at":"2026-05-18T00:50:13.563198Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:50:13.563198Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"On the strength of the $U_A(1)$ anomaly at the chiral phase transition in $N_f=2$ QCD","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ph","nucl-th"],"primary_cat":"hep-lat","authors_text":"Anthony Francis, Bastian B. Brandt, Daniel Robaina, Hartmut Wittig, Harvey B. Meyer, Owe Philipsen","submitted_at":"2016-08-24T16:11:04Z","abstract_excerpt":"We study the thermal transition of QCD with two degenerate light flavours by lattice simulations using $O(a)$-improved Wilson quarks. Temperature scans are performed at a fixed value of $N_t = (aT)^{-1}=16$, where $a$ is the lattice spacing and $T$ the temperature, at three fixed zero-temperature pion masses between 200 MeV and 540 MeV. In this range we find that the transition is consistent with a broad crossover. As a probe of the restoration of chiral symmetry, we study the static screening spectrum. We observe a degeneracy between the transverse isovector vector and axial-vector channels s"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1608.06882","kind":"arxiv","version":2},"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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1608.06882","created_at":"2026-05-18T00:50:13.563265+00:00"},{"alias_kind":"arxiv_version","alias_value":"1608.06882v2","created_at":"2026-05-18T00:50:13.563265+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1608.06882","created_at":"2026-05-18T00:50:13.563265+00:00"},{"alias_kind":"pith_short_12","alias_value":"F7XXJWUZBS6H","created_at":"2026-05-18T12:30:15.759754+00:00"},{"alias_kind":"pith_short_16","alias_value":"F7XXJWUZBS6HX732","created_at":"2026-05-18T12:30:15.759754+00:00"},{"alias_kind":"pith_short_8","alias_value":"F7XXJWUZ","created_at":"2026-05-18T12:30:15.759754+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":2,"internal_anchor_count":1,"sample":[{"citing_arxiv_id":"2602.14811","citing_title":"RG-Invariant Symmetry Ratio for QCD: A Study of $U(1)_A$ and Chiral Symmetry Restoration","ref_index":20,"is_internal_anchor":true},{"citing_arxiv_id":"2604.11916","citing_title":"On the effective restoration of $U(1)_A$ symmetry at finite temperature","ref_index":19,"is_internal_anchor":false}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/F7XXJWUZBS6HX732FDPEA4CD2L","json":"https://pith.science/pith/F7XXJWUZBS6HX732FDPEA4CD2L.json","graph_json":"https://pith.science/api/pith-number/F7XXJWUZBS6HX732FDPEA4CD2L/graph.json","events_json":"https://pith.science/api/pith-number/F7XXJWUZBS6HX732FDPEA4CD2L/events.json","paper":"https://pith.science/paper/F7XXJWUZ"},"agent_actions":{"view_html":"https://pith.science/pith/F7XXJWUZBS6HX732FDPEA4CD2L","download_json":"https://pith.science/pith/F7XXJWUZBS6HX732FDPEA4CD2L.json","view_paper":"https://pith.science/paper/F7XXJWUZ","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1608.06882&json=true","fetch_graph":"https://pith.science/api/pith-number/F7XXJWUZBS6HX732FDPEA4CD2L/graph.json","fetch_events":"https://pith.science/api/pith-number/F7XXJWUZBS6HX732FDPEA4CD2L/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/F7XXJWUZBS6HX732FDPEA4CD2L/action/timestamp_anchor","attest_storage":"https://pith.science/pith/F7XXJWUZBS6HX732FDPEA4CD2L/action/storage_attestation","attest_author":"https://pith.science/pith/F7XXJWUZBS6HX732FDPEA4CD2L/action/author_attestation","sign_citation":"https://pith.science/pith/F7XXJWUZBS6HX732FDPEA4CD2L/action/citation_signature","submit_replication":"https://pith.science/pith/F7XXJWUZBS6HX732FDPEA4CD2L/action/replication_record"}},"created_at":"2026-05-18T00:50:13.563265+00:00","updated_at":"2026-05-18T00:50:13.563265+00:00"}