{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2023:EVATEU4IGM6YIBNNBBZMUZBKUI","short_pith_number":"pith:EVATEU4I","canonical_record":{"source":{"id":"2304.08564","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"hep-ph","submitted_at":"2023-04-17T19:01:45Z","cross_cats_sorted":[],"title_canon_sha256":"80f6e3634c33b74e9ec18ecb90bab1059793d6901aba27da49da46360ed5bca5","abstract_canon_sha256":"b22e03f681d7aaf26c085a3730e08d70df1f7608fb5bd0c310d2d7dc51b16c34"},"schema_version":"1.0"},"canonical_sha256":"2541325388333d8405ad0872ca642aa21d9e21d48967f27015b8edff8951bc51","source":{"kind":"arxiv","id":"2304.08564","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2304.08564","created_at":"2026-07-05T06:30:57Z"},{"alias_kind":"arxiv_version","alias_value":"2304.08564v1","created_at":"2026-07-05T06:30:57Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2304.08564","created_at":"2026-07-05T06:30:57Z"},{"alias_kind":"pith_short_12","alias_value":"EVATEU4IGM6Y","created_at":"2026-07-05T06:30:57Z"},{"alias_kind":"pith_short_16","alias_value":"EVATEU4IGM6YIBNN","created_at":"2026-07-05T06:30:57Z"},{"alias_kind":"pith_short_8","alias_value":"EVATEU4I","created_at":"2026-07-05T06:30:57Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2023:EVATEU4IGM6YIBNNBBZMUZBKUI","target":"record","payload":{"canonical_record":{"source":{"id":"2304.08564","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"hep-ph","submitted_at":"2023-04-17T19:01:45Z","cross_cats_sorted":[],"title_canon_sha256":"80f6e3634c33b74e9ec18ecb90bab1059793d6901aba27da49da46360ed5bca5","abstract_canon_sha256":"b22e03f681d7aaf26c085a3730e08d70df1f7608fb5bd0c310d2d7dc51b16c34"},"schema_version":"1.0"},"canonical_sha256":"2541325388333d8405ad0872ca642aa21d9e21d48967f27015b8edff8951bc51","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T06:30:57.982663Z","signature_b64":"XSKhMouzMQzd6ZSiVMSdumbUM5RRHFUvvCNyeflcXUjjhRJuX0+LTGvkrWqclZ0vBB7mXvF2FAqGzJuZr7DyDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2541325388333d8405ad0872ca642aa21d9e21d48967f27015b8edff8951bc51","last_reissued_at":"2026-07-05T06:30:57.982175Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T06:30:57.982175Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2304.08564","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":"2026-07-05T06:30:57Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"XE2xd2uaOZ2Gw7h3z5wmigeD7HdzwfGVEAba/UQGR/ZvqJnOqp0avmCWJaGJW0ZamB6Iv8wfmMk2RlLpTFL+BA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-01T15:08:53.925634Z"},"content_sha256":"7dcc6eac17296857a6cbbe2b0d0aae78da1f44429d00b0a24ea1c21aab55c3f0","schema_version":"1.0","event_id":"sha256:7dcc6eac17296857a6cbbe2b0d0aae78da1f44429d00b0a24ea1c21aab55c3f0"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2023:EVATEU4IGM6YIBNNBBZMUZBKUI","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Entanglement entropy of the proton in coordinate space","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"Adrian Dumitru, Alex Kovner, Vladimir V. Skokov","submitted_at":"2023-04-17T19:01:45Z","abstract_excerpt":"We calculate the entanglement entropy of a model proton wave function in coordinate space by integrating out degrees of freedom outside a small circular region $\\bar A$ of radius $L$, where $L$ is much smaller than the size of the proton. The wave function provides a nonperturbative distribution of three valence quarks. In addition, we include the perturbative emission of a single gluon and calculate the entanglement entropy of gluons in $\\bar A$. For both, quarks and gluons we obtain the same simple result: $S_E =-\\int\\frac{dx}{\\Delta x}\\, N_{L^2}(x)\\log[N_{a^2}(x)]$, where $a$ is the UV cuto"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2304.08564","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/2304.08564/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":"2026-07-05T06:30:57Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"naE25JhUC8zKmQk7dxOWtehC5cHq4PxZpuURh/7mk//ZDak/ip889CcPTC8wsOZMqmLjRnFsWtArOXtG/uHCBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-01T15:08:53.926143Z"},"content_sha256":"20c965029535a21a924161a540d814ff14dab0b36f8377664fc223e825f1bd2a","schema_version":"1.0","event_id":"sha256:20c965029535a21a924161a540d814ff14dab0b36f8377664fc223e825f1bd2a"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/EVATEU4IGM6YIBNNBBZMUZBKUI/bundle.json","state_url":"https://pith.science/pith/EVATEU4IGM6YIBNNBBZMUZBKUI/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/EVATEU4IGM6YIBNNBBZMUZBKUI/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":"2026-08-01T15:08:53Z","links":{"resolver":"https://pith.science/pith/EVATEU4IGM6YIBNNBBZMUZBKUI","bundle":"https://pith.science/pith/EVATEU4IGM6YIBNNBBZMUZBKUI/bundle.json","state":"https://pith.science/pith/EVATEU4IGM6YIBNNBBZMUZBKUI/state.json","well_known_bundle":"https://pith.science/.well-known/pith/EVATEU4IGM6YIBNNBBZMUZBKUI/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:EVATEU4IGM6YIBNNBBZMUZBKUI","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":"b22e03f681d7aaf26c085a3730e08d70df1f7608fb5bd0c310d2d7dc51b16c34","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"hep-ph","submitted_at":"2023-04-17T19:01:45Z","title_canon_sha256":"80f6e3634c33b74e9ec18ecb90bab1059793d6901aba27da49da46360ed5bca5"},"schema_version":"1.0","source":{"id":"2304.08564","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2304.08564","created_at":"2026-07-05T06:30:57Z"},{"alias_kind":"arxiv_version","alias_value":"2304.08564v1","created_at":"2026-07-05T06:30:57Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2304.08564","created_at":"2026-07-05T06:30:57Z"},{"alias_kind":"pith_short_12","alias_value":"EVATEU4IGM6Y","created_at":"2026-07-05T06:30:57Z"},{"alias_kind":"pith_short_16","alias_value":"EVATEU4IGM6YIBNN","created_at":"2026-07-05T06:30:57Z"},{"alias_kind":"pith_short_8","alias_value":"EVATEU4I","created_at":"2026-07-05T06:30:57Z"}],"graph_snapshots":[{"event_id":"sha256:20c965029535a21a924161a540d814ff14dab0b36f8377664fc223e825f1bd2a","target":"graph","created_at":"2026-07-05T06:30:57Z","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/2304.08564/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We calculate the entanglement entropy of a model proton wave function in coordinate space by integrating out degrees of freedom outside a small circular region $\\bar A$ of radius $L$, where $L$ is much smaller than the size of the proton. The wave function provides a nonperturbative distribution of three valence quarks. In addition, we include the perturbative emission of a single gluon and calculate the entanglement entropy of gluons in $\\bar A$. For both, quarks and gluons we obtain the same simple result: $S_E =-\\int\\frac{dx}{\\Delta x}\\, N_{L^2}(x)\\log[N_{a^2}(x)]$, where $a$ is the UV cuto","authors_text":"Adrian Dumitru, Alex Kovner, Vladimir V. Skokov","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"hep-ph","submitted_at":"2023-04-17T19:01:45Z","title":"Entanglement entropy of the proton in coordinate space"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2304.08564","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":"sha256:7dcc6eac17296857a6cbbe2b0d0aae78da1f44429d00b0a24ea1c21aab55c3f0","target":"record","created_at":"2026-07-05T06:30:57Z","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":"b22e03f681d7aaf26c085a3730e08d70df1f7608fb5bd0c310d2d7dc51b16c34","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"hep-ph","submitted_at":"2023-04-17T19:01:45Z","title_canon_sha256":"80f6e3634c33b74e9ec18ecb90bab1059793d6901aba27da49da46360ed5bca5"},"schema_version":"1.0","source":{"id":"2304.08564","kind":"arxiv","version":1}},"canonical_sha256":"2541325388333d8405ad0872ca642aa21d9e21d48967f27015b8edff8951bc51","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2541325388333d8405ad0872ca642aa21d9e21d48967f27015b8edff8951bc51","first_computed_at":"2026-07-05T06:30:57.982175Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T06:30:57.982175Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"XSKhMouzMQzd6ZSiVMSdumbUM5RRHFUvvCNyeflcXUjjhRJuX0+LTGvkrWqclZ0vBB7mXvF2FAqGzJuZr7DyDw==","signature_status":"signed_v1","signed_at":"2026-07-05T06:30:57.982663Z","signed_message":"canonical_sha256_bytes"},"source_id":"2304.08564","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:7dcc6eac17296857a6cbbe2b0d0aae78da1f44429d00b0a24ea1c21aab55c3f0","sha256:20c965029535a21a924161a540d814ff14dab0b36f8377664fc223e825f1bd2a"],"state_sha256":"3e468d491889cfc465fd9b3b1bcf987fe90363a6468cc2d933f9dde3b3d87284"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9dK1nCW6/A1PX7T/AKOgQ913xrbzDI1jINww8PzhPcV5fevGYznXftpaUHGvSnJjoZf85Tq1kk0U1iAPS3r3Cg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-01T15:08:53.931610Z","bundle_sha256":"989a40f9e367768bdf05d05143904f420cb350917f54c67b4aaf08a9118f465e"}}