{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:5CKQC35LJ7O7IWHFTX5FH6PVH4","short_pith_number":"pith:5CKQC35L","canonical_record":{"source":{"id":"1506.05732","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-lat","submitted_at":"2015-06-18T16:03:23Z","cross_cats_sorted":["hep-ph","nucl-th"],"title_canon_sha256":"1a21b17cbbc425f09a9f135c3c7d4a939f493a80cceb11e5c9f1e6383f297840","abstract_canon_sha256":"4431a41830f31ac4942fd6b91a05a69c9d64bee5a1fac0a1bef2eaf7a3bbc1e1"},"schema_version":"1.0"},"canonical_sha256":"e895016fab4fddf458e59dfa53f9f53f3a31fa02e1ebd3d44f97990b29e4b4ce","source":{"kind":"arxiv","id":"1506.05732","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1506.05732","created_at":"2026-05-18T01:26:42Z"},{"alias_kind":"arxiv_version","alias_value":"1506.05732v1","created_at":"2026-05-18T01:26:42Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1506.05732","created_at":"2026-05-18T01:26:42Z"},{"alias_kind":"pith_short_12","alias_value":"5CKQC35LJ7O7","created_at":"2026-05-18T12:29:05Z"},{"alias_kind":"pith_short_16","alias_value":"5CKQC35LJ7O7IWHF","created_at":"2026-05-18T12:29:05Z"},{"alias_kind":"pith_short_8","alias_value":"5CKQC35L","created_at":"2026-05-18T12:29:05Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:5CKQC35LJ7O7IWHFTX5FH6PVH4","target":"record","payload":{"canonical_record":{"source":{"id":"1506.05732","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-lat","submitted_at":"2015-06-18T16:03:23Z","cross_cats_sorted":["hep-ph","nucl-th"],"title_canon_sha256":"1a21b17cbbc425f09a9f135c3c7d4a939f493a80cceb11e5c9f1e6383f297840","abstract_canon_sha256":"4431a41830f31ac4942fd6b91a05a69c9d64bee5a1fac0a1bef2eaf7a3bbc1e1"},"schema_version":"1.0"},"canonical_sha256":"e895016fab4fddf458e59dfa53f9f53f3a31fa02e1ebd3d44f97990b29e4b4ce","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:26:42.615362Z","signature_b64":"nxH0sgxqK/zlcoZ6XSZuliQo6nG6r1JIkspkjlB4SDK/PFujovmI3UBqtORK1ogweQHvk0MUPFXOogedefq3Bw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e895016fab4fddf458e59dfa53f9f53f3a31fa02e1ebd3d44f97990b29e4b4ce","last_reissued_at":"2026-05-18T01:26:42.614784Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:26:42.614784Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1506.05732","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:26:42Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Z1QqzRy/FN5B+cKLixRn9knQjBisNQ+zBs1cRLoacatf7SMwYwVfdq2qC+dAAR/uug7EPX6W6cskNQz/0EqtDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T04:33:47.839273Z"},"content_sha256":"d095485659d3a84b387fb07ea6e251cf0eb04acd890585c70bf047857bf63a08","schema_version":"1.0","event_id":"sha256:d095485659d3a84b387fb07ea6e251cf0eb04acd890585c70bf047857bf63a08"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:5CKQC35LJ7O7IWHFTX5FH6PVH4","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The pion quasiparticle in the low-temperature phase of 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, Harvey B. Meyer","submitted_at":"2015-06-18T16:03:23Z","abstract_excerpt":"We investigate the properties of the pion quasiparticle in the low-temperature phase of two-flavor QCD on the lattice with support from chiral effective theory. We find that the pion quasiparticle mass is significantly reduced compared to its value in the vacuum, by contrast with the static screening mass, which increases with temperature. By a simple argument, near the chiral limit the two masses are expected to determine the quasiparticle dispersion relation. Analyzing two-point functions of the axial charge density at non-vanishing spatial momentum, we find that the predicted dispersion rel"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1506.05732","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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:26:42Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"TjMHip9+AXHalCbJVXyFbYyCnkIy1515ObV9HeiadvqBAEAbrLe1tjd+W4jR31YJH9IeiY2hAyWnXYd3PMvuAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T04:33:47.840031Z"},"content_sha256":"8660be298645ee27aab99d7f3ebec43ff6334dffb1450b7774ef2761d18286e6","schema_version":"1.0","event_id":"sha256:8660be298645ee27aab99d7f3ebec43ff6334dffb1450b7774ef2761d18286e6"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/5CKQC35LJ7O7IWHFTX5FH6PVH4/bundle.json","state_url":"https://pith.science/pith/5CKQC35LJ7O7IWHFTX5FH6PVH4/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/5CKQC35LJ7O7IWHFTX5FH6PVH4/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-05-31T04:33:47Z","links":{"resolver":"https://pith.science/pith/5CKQC35LJ7O7IWHFTX5FH6PVH4","bundle":"https://pith.science/pith/5CKQC35LJ7O7IWHFTX5FH6PVH4/bundle.json","state":"https://pith.science/pith/5CKQC35LJ7O7IWHFTX5FH6PVH4/state.json","well_known_bundle":"https://pith.science/.well-known/pith/5CKQC35LJ7O7IWHFTX5FH6PVH4/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:5CKQC35LJ7O7IWHFTX5FH6PVH4","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":"4431a41830f31ac4942fd6b91a05a69c9d64bee5a1fac0a1bef2eaf7a3bbc1e1","cross_cats_sorted":["hep-ph","nucl-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-lat","submitted_at":"2015-06-18T16:03:23Z","title_canon_sha256":"1a21b17cbbc425f09a9f135c3c7d4a939f493a80cceb11e5c9f1e6383f297840"},"schema_version":"1.0","source":{"id":"1506.05732","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1506.05732","created_at":"2026-05-18T01:26:42Z"},{"alias_kind":"arxiv_version","alias_value":"1506.05732v1","created_at":"2026-05-18T01:26:42Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1506.05732","created_at":"2026-05-18T01:26:42Z"},{"alias_kind":"pith_short_12","alias_value":"5CKQC35LJ7O7","created_at":"2026-05-18T12:29:05Z"},{"alias_kind":"pith_short_16","alias_value":"5CKQC35LJ7O7IWHF","created_at":"2026-05-18T12:29:05Z"},{"alias_kind":"pith_short_8","alias_value":"5CKQC35L","created_at":"2026-05-18T12:29:05Z"}],"graph_snapshots":[{"event_id":"sha256:8660be298645ee27aab99d7f3ebec43ff6334dffb1450b7774ef2761d18286e6","target":"graph","created_at":"2026-05-18T01:26:42Z","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":"We investigate the properties of the pion quasiparticle in the low-temperature phase of two-flavor QCD on the lattice with support from chiral effective theory. We find that the pion quasiparticle mass is significantly reduced compared to its value in the vacuum, by contrast with the static screening mass, which increases with temperature. By a simple argument, near the chiral limit the two masses are expected to determine the quasiparticle dispersion relation. Analyzing two-point functions of the axial charge density at non-vanishing spatial momentum, we find that the predicted dispersion rel","authors_text":"Anthony Francis, Bastian B. Brandt, Daniel Robaina, Harvey B. Meyer","cross_cats":["hep-ph","nucl-th"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-lat","submitted_at":"2015-06-18T16:03:23Z","title":"The pion quasiparticle in the low-temperature phase of QCD"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1506.05732","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:d095485659d3a84b387fb07ea6e251cf0eb04acd890585c70bf047857bf63a08","target":"record","created_at":"2026-05-18T01:26:42Z","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":"4431a41830f31ac4942fd6b91a05a69c9d64bee5a1fac0a1bef2eaf7a3bbc1e1","cross_cats_sorted":["hep-ph","nucl-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-lat","submitted_at":"2015-06-18T16:03:23Z","title_canon_sha256":"1a21b17cbbc425f09a9f135c3c7d4a939f493a80cceb11e5c9f1e6383f297840"},"schema_version":"1.0","source":{"id":"1506.05732","kind":"arxiv","version":1}},"canonical_sha256":"e895016fab4fddf458e59dfa53f9f53f3a31fa02e1ebd3d44f97990b29e4b4ce","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e895016fab4fddf458e59dfa53f9f53f3a31fa02e1ebd3d44f97990b29e4b4ce","first_computed_at":"2026-05-18T01:26:42.614784Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:26:42.614784Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"nxH0sgxqK/zlcoZ6XSZuliQo6nG6r1JIkspkjlB4SDK/PFujovmI3UBqtORK1ogweQHvk0MUPFXOogedefq3Bw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:26:42.615362Z","signed_message":"canonical_sha256_bytes"},"source_id":"1506.05732","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d095485659d3a84b387fb07ea6e251cf0eb04acd890585c70bf047857bf63a08","sha256:8660be298645ee27aab99d7f3ebec43ff6334dffb1450b7774ef2761d18286e6"],"state_sha256":"aa31332d23d325f4f249e667673efe7e3943bae63e762e9a1f4f6d2ba723f373"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"LIbP68q1bdrZbAen6ixTPziaLSORKp4F/ncIjFu7zHRiUrVwrW1btyXN0/ze3akkDBOZ21r62WOcNmP18eW5Cw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-31T04:33:47.853064Z","bundle_sha256":"749129f78ab93ccb38e93af3791e8a1e564799e20ca6961aa19f8a72b0447049"}}