{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:C77L5ZA7PJUHGKHEQIWOKSL4KO","short_pith_number":"pith:C77L5ZA7","canonical_record":{"source":{"id":"2103.07489","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2021-03-12T19:07:02Z","cross_cats_sorted":["hep-ph","hep-th"],"title_canon_sha256":"0cfbd51ff0dd4b11309479555c768543add77234cfd616743c62407fb9a1eb82","abstract_canon_sha256":"83ccbf9fc7ff42fa494a3f2dc9096188efcb349941075e930d6b47ae7388bcee"},"schema_version":"1.0"},"canonical_sha256":"17febee41f7a687328e4822ce5497c53aad29dbbb2f57b4fed603a46d47c5342","source":{"kind":"arxiv","id":"2103.07489","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2103.07489","created_at":"2026-07-05T03:01:15Z"},{"alias_kind":"arxiv_version","alias_value":"2103.07489v2","created_at":"2026-07-05T03:01:15Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2103.07489","created_at":"2026-07-05T03:01:15Z"},{"alias_kind":"pith_short_12","alias_value":"C77L5ZA7PJUH","created_at":"2026-07-05T03:01:15Z"},{"alias_kind":"pith_short_16","alias_value":"C77L5ZA7PJUHGKHE","created_at":"2026-07-05T03:01:15Z"},{"alias_kind":"pith_short_8","alias_value":"C77L5ZA7","created_at":"2026-07-05T03:01:15Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:C77L5ZA7PJUHGKHEQIWOKSL4KO","target":"record","payload":{"canonical_record":{"source":{"id":"2103.07489","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2021-03-12T19:07:02Z","cross_cats_sorted":["hep-ph","hep-th"],"title_canon_sha256":"0cfbd51ff0dd4b11309479555c768543add77234cfd616743c62407fb9a1eb82","abstract_canon_sha256":"83ccbf9fc7ff42fa494a3f2dc9096188efcb349941075e930d6b47ae7388bcee"},"schema_version":"1.0"},"canonical_sha256":"17febee41f7a687328e4822ce5497c53aad29dbbb2f57b4fed603a46d47c5342","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T03:01:15.569269Z","signature_b64":"sY1k2j7lIXbr63Zdraya1j6kaIpn91W3qOKe/6UNWGPpBXJ/NaHgZ1DGnHKk0lgsIy67woa4U0fWV/b2qe0IDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"17febee41f7a687328e4822ce5497c53aad29dbbb2f57b4fed603a46d47c5342","last_reissued_at":"2026-07-05T03:01:15.568705Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T03:01:15.568705Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2103.07489","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T03:01:15Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9zhBEix7A3Mou7Q/AzpmRorI2So5Z6TzhflCYkzTpK+sswD1Lw2LOrlt+LGWKt2KsS3iJ9PR/aGtx3BoxLxECg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-18T21:02:27.591636Z"},"content_sha256":"835f2f674443434b6994bcc4047ff7d628df3d5b913b3c3d576e0347467d5352","schema_version":"1.0","event_id":"sha256:835f2f674443434b6994bcc4047ff7d628df3d5b913b3c3d576e0347467d5352"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:C77L5ZA7PJUHGKHEQIWOKSL4KO","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Novel Relaxation Time Approximation to the Relativistic Boltzmann Equation","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ph","hep-th"],"primary_cat":"nucl-th","authors_text":"Gabriel S. Denicol, Gabriel S. Rocha, Jorge Noronha","submitted_at":"2021-03-12T19:07:02Z","abstract_excerpt":"We show that the widely used relaxation time approximation to the relativistic Boltzmann equation contains basic flaws, being incompatible with microscopic and macroscopic conservation laws. We propose a new approximation that fixes such fundamental issues and maintains the basic properties of the linearized Boltzmann collision operator. We show how this correction affects transport coefficients, such as the bulk viscosity and particle diffusion."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2103.07489","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2103.07489/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-05T03:01:15Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"a2+PfP7HuTEPz8jEjshapIVw7GqQ+dL92vzXgrQcTg2j5gBNbH+Sy3jLERLOf2Nwdt879xOX3Xzhq9nsv48MBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-18T21:02:27.592533Z"},"content_sha256":"0d934ea5518fe306e7fb6b3d975dcbbd0501276a57e01b58c48fdf7bc8c5b023","schema_version":"1.0","event_id":"sha256:0d934ea5518fe306e7fb6b3d975dcbbd0501276a57e01b58c48fdf7bc8c5b023"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/C77L5ZA7PJUHGKHEQIWOKSL4KO/bundle.json","state_url":"https://pith.science/pith/C77L5ZA7PJUHGKHEQIWOKSL4KO/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/C77L5ZA7PJUHGKHEQIWOKSL4KO/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":"2026-08-18T21:02:27Z","links":{"resolver":"https://pith.science/pith/C77L5ZA7PJUHGKHEQIWOKSL4KO","bundle":"https://pith.science/pith/C77L5ZA7PJUHGKHEQIWOKSL4KO/bundle.json","state":"https://pith.science/pith/C77L5ZA7PJUHGKHEQIWOKSL4KO/state.json","well_known_bundle":"https://pith.science/.well-known/pith/C77L5ZA7PJUHGKHEQIWOKSL4KO/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:C77L5ZA7PJUHGKHEQIWOKSL4KO","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":"83ccbf9fc7ff42fa494a3f2dc9096188efcb349941075e930d6b47ae7388bcee","cross_cats_sorted":["hep-ph","hep-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2021-03-12T19:07:02Z","title_canon_sha256":"0cfbd51ff0dd4b11309479555c768543add77234cfd616743c62407fb9a1eb82"},"schema_version":"1.0","source":{"id":"2103.07489","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2103.07489","created_at":"2026-07-05T03:01:15Z"},{"alias_kind":"arxiv_version","alias_value":"2103.07489v2","created_at":"2026-07-05T03:01:15Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2103.07489","created_at":"2026-07-05T03:01:15Z"},{"alias_kind":"pith_short_12","alias_value":"C77L5ZA7PJUH","created_at":"2026-07-05T03:01:15Z"},{"alias_kind":"pith_short_16","alias_value":"C77L5ZA7PJUHGKHE","created_at":"2026-07-05T03:01:15Z"},{"alias_kind":"pith_short_8","alias_value":"C77L5ZA7","created_at":"2026-07-05T03:01:15Z"}],"graph_snapshots":[{"event_id":"sha256:0d934ea5518fe306e7fb6b3d975dcbbd0501276a57e01b58c48fdf7bc8c5b023","target":"graph","created_at":"2026-07-05T03:01:15Z","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/2103.07489/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We show that the widely used relaxation time approximation to the relativistic Boltzmann equation contains basic flaws, being incompatible with microscopic and macroscopic conservation laws. We propose a new approximation that fixes such fundamental issues and maintains the basic properties of the linearized Boltzmann collision operator. We show how this correction affects transport coefficients, such as the bulk viscosity and particle diffusion.","authors_text":"Gabriel S. Denicol, Gabriel S. Rocha, Jorge Noronha","cross_cats":["hep-ph","hep-th"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2021-03-12T19:07:02Z","title":"Novel Relaxation Time Approximation to the Relativistic Boltzmann Equation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2103.07489","kind":"arxiv","version":2},"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":"sha256:835f2f674443434b6994bcc4047ff7d628df3d5b913b3c3d576e0347467d5352","target":"record","created_at":"2026-07-05T03:01:15Z","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":"83ccbf9fc7ff42fa494a3f2dc9096188efcb349941075e930d6b47ae7388bcee","cross_cats_sorted":["hep-ph","hep-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2021-03-12T19:07:02Z","title_canon_sha256":"0cfbd51ff0dd4b11309479555c768543add77234cfd616743c62407fb9a1eb82"},"schema_version":"1.0","source":{"id":"2103.07489","kind":"arxiv","version":2}},"canonical_sha256":"17febee41f7a687328e4822ce5497c53aad29dbbb2f57b4fed603a46d47c5342","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"17febee41f7a687328e4822ce5497c53aad29dbbb2f57b4fed603a46d47c5342","first_computed_at":"2026-07-05T03:01:15.568705Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T03:01:15.568705Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"sY1k2j7lIXbr63Zdraya1j6kaIpn91W3qOKe/6UNWGPpBXJ/NaHgZ1DGnHKk0lgsIy67woa4U0fWV/b2qe0IDg==","signature_status":"signed_v1","signed_at":"2026-07-05T03:01:15.569269Z","signed_message":"canonical_sha256_bytes"},"source_id":"2103.07489","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:835f2f674443434b6994bcc4047ff7d628df3d5b913b3c3d576e0347467d5352","sha256:0d934ea5518fe306e7fb6b3d975dcbbd0501276a57e01b58c48fdf7bc8c5b023"],"state_sha256":"7308ed430b54ae2798e9c991df989c4d34aece2c41a31980dfdd052f784d5598"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"DA7h6wwR3CrY8/o9ySGIT6gf4GqYxcM41wik62A6dimHg/9r27x6za8NQmdgsrdSo5LUAIDFrfr0MMQSYo4aBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-18T21:02:27.597505Z","bundle_sha256":"3be9777034384b796dea014ee54453c080f03378940a7d6ca004305f601f212c"}}