{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:1994:FGDKMUGLOG7W5ZOQXRXHLRR2PC","short_pith_number":"pith:FGDKMUGL","canonical_record":{"source":{"id":"nucl-th/9405006","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"nucl-th","submitted_at":"1994-05-04T20:44:53Z","cross_cats_sorted":[],"title_canon_sha256":"cca68ca0b68b05a319b35cbb03a39d050b97266884c466c3eb4774df6a177ef9","abstract_canon_sha256":"e70d4cdea9eb0151ac36b5d59533b327d75e6141f8299c3d00b60e1382d3c874"},"schema_version":"1.0"},"canonical_sha256":"2986a650cb71bf6ee5d0bc6e75c63a78901d647d93c9472607da92459097758c","source":{"kind":"arxiv","id":"nucl-th/9405006","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"nucl-th/9405006","created_at":"2026-07-04T15:50:59Z"},{"alias_kind":"arxiv_version","alias_value":"nucl-th/9405006v1","created_at":"2026-07-04T15:50:59Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.nucl-th/9405006","created_at":"2026-07-04T15:50:59Z"},{"alias_kind":"pith_short_12","alias_value":"FGDKMUGLOG7W","created_at":"2026-07-04T15:50:59Z"},{"alias_kind":"pith_short_16","alias_value":"FGDKMUGLOG7W5ZOQ","created_at":"2026-07-04T15:50:59Z"},{"alias_kind":"pith_short_8","alias_value":"FGDKMUGL","created_at":"2026-07-04T15:50:59Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:1994:FGDKMUGLOG7W5ZOQXRXHLRR2PC","target":"record","payload":{"canonical_record":{"source":{"id":"nucl-th/9405006","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"nucl-th","submitted_at":"1994-05-04T20:44:53Z","cross_cats_sorted":[],"title_canon_sha256":"cca68ca0b68b05a319b35cbb03a39d050b97266884c466c3eb4774df6a177ef9","abstract_canon_sha256":"e70d4cdea9eb0151ac36b5d59533b327d75e6141f8299c3d00b60e1382d3c874"},"schema_version":"1.0"},"canonical_sha256":"2986a650cb71bf6ee5d0bc6e75c63a78901d647d93c9472607da92459097758c","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T15:50:59.354348Z","signature_b64":"XparQfceyE2Rp5PPkPNJx2ZDVm+rQA39p0E5sVCzOmfyj5sKhdtVcjkXHMsWc0IIowoK1729wN4MzMQTWhV7Dg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2986a650cb71bf6ee5d0bc6e75c63a78901d647d93c9472607da92459097758c","last_reissued_at":"2026-07-04T15:50:59.353884Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T15:50:59.353884Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"nucl-th/9405006","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":"2026-07-04T15:50:59Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"m9nfsj3jiVXXCJK1H+25DVETMHjbKsOcKg9xGs4SNmyPslaYuEGpUzED0/4yDXhyDIUfH/qeUrbId6pDgc/mCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T17:39:53.849541Z"},"content_sha256":"31e6f808d471b7068aa4ce65f197beb5decc02241a1d76bd7563a8cbff97ca7e","schema_version":"1.0","event_id":"sha256:31e6f808d471b7068aa4ce65f197beb5decc02241a1d76bd7563a8cbff97ca7e"},{"event_type":"graph_snapshot","subject_pith_number":"pith:1994:FGDKMUGLOG7W5ZOQXRXHLRR2PC","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Momentum--dependent nuclear mean fields and collective flow in heavy ion collisions","license":"","headline":"","cross_cats":[],"primary_cat":"nucl-th","authors_text":"Charles Gale, Jianming Zhang, Subal Das Gupta","submitted_at":"1994-05-04T20:44:53Z","abstract_excerpt":"We use the Boltzmann-Uehling-Uhlenbeck model to simulate the dynamical evolution of heavy ion collisions and to compare the effects of two parametrizations of the momentum--dependent nuclear mean field that have identical properties in cold nuclear matter. We compare with recent data on nuclear flow, as characterized by transverse momentum distributions and flow ($F$) variables for symmetric and asymmetric systems. We find that the precise functional dependence of the nuclear mean field on the particle momentum is important. With our approach, we also confirm that the difference between symmet"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"nucl-th/9405006","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/nucl-th/9405006/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":"2026-07-04T15:50:59Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"i+fdRY40yKoCR25wkciEITqceXncp0cEXu/UI91ehyjf5OgfDbH8b6UNEQWZGAQ32lSmDiZ6vGBR+sgv43qqBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T17:39:53.850070Z"},"content_sha256":"b91d419bba6d069f21e624000d72d44c32b61d57b317367de3a91af637722a21","schema_version":"1.0","event_id":"sha256:b91d419bba6d069f21e624000d72d44c32b61d57b317367de3a91af637722a21"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/FGDKMUGLOG7W5ZOQXRXHLRR2PC/bundle.json","state_url":"https://pith.science/pith/FGDKMUGLOG7W5ZOQXRXHLRR2PC/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/FGDKMUGLOG7W5ZOQXRXHLRR2PC/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":"2026-08-05T17:39:53Z","links":{"resolver":"https://pith.science/pith/FGDKMUGLOG7W5ZOQXRXHLRR2PC","bundle":"https://pith.science/pith/FGDKMUGLOG7W5ZOQXRXHLRR2PC/bundle.json","state":"https://pith.science/pith/FGDKMUGLOG7W5ZOQXRXHLRR2PC/state.json","well_known_bundle":"https://pith.science/.well-known/pith/FGDKMUGLOG7W5ZOQXRXHLRR2PC/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:1994:FGDKMUGLOG7W5ZOQXRXHLRR2PC","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":"e70d4cdea9eb0151ac36b5d59533b327d75e6141f8299c3d00b60e1382d3c874","cross_cats_sorted":[],"license":"","primary_cat":"nucl-th","submitted_at":"1994-05-04T20:44:53Z","title_canon_sha256":"cca68ca0b68b05a319b35cbb03a39d050b97266884c466c3eb4774df6a177ef9"},"schema_version":"1.0","source":{"id":"nucl-th/9405006","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"nucl-th/9405006","created_at":"2026-07-04T15:50:59Z"},{"alias_kind":"arxiv_version","alias_value":"nucl-th/9405006v1","created_at":"2026-07-04T15:50:59Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.nucl-th/9405006","created_at":"2026-07-04T15:50:59Z"},{"alias_kind":"pith_short_12","alias_value":"FGDKMUGLOG7W","created_at":"2026-07-04T15:50:59Z"},{"alias_kind":"pith_short_16","alias_value":"FGDKMUGLOG7W5ZOQ","created_at":"2026-07-04T15:50:59Z"},{"alias_kind":"pith_short_8","alias_value":"FGDKMUGL","created_at":"2026-07-04T15:50:59Z"}],"graph_snapshots":[{"event_id":"sha256:b91d419bba6d069f21e624000d72d44c32b61d57b317367de3a91af637722a21","target":"graph","created_at":"2026-07-04T15:50:59Z","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/nucl-th/9405006/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We use the Boltzmann-Uehling-Uhlenbeck model to simulate the dynamical evolution of heavy ion collisions and to compare the effects of two parametrizations of the momentum--dependent nuclear mean field that have identical properties in cold nuclear matter. We compare with recent data on nuclear flow, as characterized by transverse momentum distributions and flow ($F$) variables for symmetric and asymmetric systems. We find that the precise functional dependence of the nuclear mean field on the particle momentum is important. With our approach, we also confirm that the difference between symmet","authors_text":"Charles Gale, Jianming Zhang, Subal Das Gupta","cross_cats":[],"headline":"","license":"","primary_cat":"nucl-th","submitted_at":"1994-05-04T20:44:53Z","title":"Momentum--dependent nuclear mean fields and collective flow in heavy ion collisions"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"nucl-th/9405006","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":"sha256:31e6f808d471b7068aa4ce65f197beb5decc02241a1d76bd7563a8cbff97ca7e","target":"record","created_at":"2026-07-04T15:50:59Z","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":"e70d4cdea9eb0151ac36b5d59533b327d75e6141f8299c3d00b60e1382d3c874","cross_cats_sorted":[],"license":"","primary_cat":"nucl-th","submitted_at":"1994-05-04T20:44:53Z","title_canon_sha256":"cca68ca0b68b05a319b35cbb03a39d050b97266884c466c3eb4774df6a177ef9"},"schema_version":"1.0","source":{"id":"nucl-th/9405006","kind":"arxiv","version":1}},"canonical_sha256":"2986a650cb71bf6ee5d0bc6e75c63a78901d647d93c9472607da92459097758c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2986a650cb71bf6ee5d0bc6e75c63a78901d647d93c9472607da92459097758c","first_computed_at":"2026-07-04T15:50:59.353884Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T15:50:59.353884Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"XparQfceyE2Rp5PPkPNJx2ZDVm+rQA39p0E5sVCzOmfyj5sKhdtVcjkXHMsWc0IIowoK1729wN4MzMQTWhV7Dg==","signature_status":"signed_v1","signed_at":"2026-07-04T15:50:59.354348Z","signed_message":"canonical_sha256_bytes"},"source_id":"nucl-th/9405006","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:31e6f808d471b7068aa4ce65f197beb5decc02241a1d76bd7563a8cbff97ca7e","sha256:b91d419bba6d069f21e624000d72d44c32b61d57b317367de3a91af637722a21"],"state_sha256":"bdc10529ff1aa09615407ff68e193c8ffae0062a34f5a15b96d8769c7d6aedc1"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"NDU0+Nvx2cJVd3equoOof3N8ouEXi1yKXco4kPW7Y3uRLaI2smoBstFmhQnqexYtueYhrrK2uwCHJFu5/62eCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-05T17:39:53.855770Z","bundle_sha256":"31cd14d3a3309805c438704bc4df76f18d726864244f93a23cc4c388250626b2"}}