{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:7VDRKGLHVS2FF23ZP7Z2WDAQFQ","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":"ee7e08beff7ca5b15b3ca1b82c7b23e78a85a11ea29a11b96e476829b5518fc2","cross_cats_sorted":["hep-lat","hep-ph","nucl-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2016-06-13T12:00:03Z","title_canon_sha256":"4ff2b753b75841318e1abe54a679cc664d48b4ff1d22a13104e7fdd3be995cd5"},"schema_version":"1.0","source":{"id":"1606.03909","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1606.03909","created_at":"2026-05-18T00:53:25Z"},{"alias_kind":"arxiv_version","alias_value":"1606.03909v1","created_at":"2026-05-18T00:53:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1606.03909","created_at":"2026-05-18T00:53:25Z"},{"alias_kind":"pith_short_12","alias_value":"7VDRKGLHVS2F","created_at":"2026-05-18T12:30:04Z"},{"alias_kind":"pith_short_16","alias_value":"7VDRKGLHVS2FF23Z","created_at":"2026-05-18T12:30:04Z"},{"alias_kind":"pith_short_8","alias_value":"7VDRKGLH","created_at":"2026-05-18T12:30:04Z"}],"graph_snapshots":[{"event_id":"sha256:2e4e3a9022d86b68baf70d458a4d123a008a5d64cbd0c644a929aba117a7d1cb","target":"graph","created_at":"2026-05-18T00:53:25Z","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":"The energy-momentum tensor in chiral QCD, $T_{\\mu\\nu}$, exhibits an anomaly, viz. $\\Theta_0 :=T_{\\mu\\mu} \\neq 0$. Measured in the proton, this anomaly yields $m_p^2$, where $m_p$ is the proton's mass; but, at the same time, when computed in the pion, the answer is $m_\\pi^2=0$. Any attempt to understand the origin and nature of mass, and identify observable expressions thereof, must explain and unify these two apparently contradictory results, which are fundamental to the nature of our Universe. Given the importance of Poincar\\'e-invariance in modern physics, the utility of a frame-dependent ap","authors_text":"Craig D. Roberts","cross_cats":["hep-lat","hep-ph","nucl-ex"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2016-06-13T12:00:03Z","title":"Perspective on the origin of hadron masses"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1606.03909","kind":"arxiv","version":1},"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":"sha256:7d1f99432d6b5eeac5517e5f8725125e7512b72ab91741d8673228ce02333ca2","target":"record","created_at":"2026-05-18T00:53:25Z","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":"ee7e08beff7ca5b15b3ca1b82c7b23e78a85a11ea29a11b96e476829b5518fc2","cross_cats_sorted":["hep-lat","hep-ph","nucl-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2016-06-13T12:00:03Z","title_canon_sha256":"4ff2b753b75841318e1abe54a679cc664d48b4ff1d22a13104e7fdd3be995cd5"},"schema_version":"1.0","source":{"id":"1606.03909","kind":"arxiv","version":1}},"canonical_sha256":"fd47151967acb452eb797ff3ab0c102c2e1138c0549540935f4ce7f30e812423","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"fd47151967acb452eb797ff3ab0c102c2e1138c0549540935f4ce7f30e812423","first_computed_at":"2026-05-18T00:53:25.945654Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:53:25.945654Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"MrIAzXPcQKerzoj85uoRVWOF5CwDbKQ5UX5BPwu7PdLSFZiE6zflvgYvlKxTtBjLjqX7CsFcJz+Fnz4lMm1oBg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:53:25.946287Z","signed_message":"canonical_sha256_bytes"},"source_id":"1606.03909","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:7d1f99432d6b5eeac5517e5f8725125e7512b72ab91741d8673228ce02333ca2","sha256:2e4e3a9022d86b68baf70d458a4d123a008a5d64cbd0c644a929aba117a7d1cb"],"state_sha256":"8d7c17962e1302a4360c41ed1daf3ee09aee83eceec9f0ab3276434d8b2e7498"}