{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:IWBXLIEAKLVQDZ6HUX7KRRWIS6","short_pith_number":"pith:IWBXLIEA","canonical_record":{"source":{"id":"2503.17819","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2025-03-22T16:47:05Z","cross_cats_sorted":[],"title_canon_sha256":"d5f2adac23001cb7a118f2925fc40f7b8facd9b1294de11216071d39752654b6","abstract_canon_sha256":"c175076873752299376f25dc4a1e080843274b125b1070508127cb4e547c588e"},"schema_version":"1.0"},"canonical_sha256":"458375a08052eb01e7c7a5fea8c6c89780be2baf5c8eb19283bb442182f76676","source":{"kind":"arxiv","id":"2503.17819","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2503.17819","created_at":"2026-07-05T10:37:55Z"},{"alias_kind":"arxiv_version","alias_value":"2503.17819v1","created_at":"2026-07-05T10:37:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2503.17819","created_at":"2026-07-05T10:37:55Z"},{"alias_kind":"pith_short_12","alias_value":"IWBXLIEAKLVQ","created_at":"2026-07-05T10:37:55Z"},{"alias_kind":"pith_short_16","alias_value":"IWBXLIEAKLVQDZ6H","created_at":"2026-07-05T10:37:55Z"},{"alias_kind":"pith_short_8","alias_value":"IWBXLIEA","created_at":"2026-07-05T10:37:55Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:IWBXLIEAKLVQDZ6HUX7KRRWIS6","target":"record","payload":{"canonical_record":{"source":{"id":"2503.17819","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2025-03-22T16:47:05Z","cross_cats_sorted":[],"title_canon_sha256":"d5f2adac23001cb7a118f2925fc40f7b8facd9b1294de11216071d39752654b6","abstract_canon_sha256":"c175076873752299376f25dc4a1e080843274b125b1070508127cb4e547c588e"},"schema_version":"1.0"},"canonical_sha256":"458375a08052eb01e7c7a5fea8c6c89780be2baf5c8eb19283bb442182f76676","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T10:37:55.648470Z","signature_b64":"sGhJu/LNBqU+cQXP2LPNHn/FtupudgLfK4WmxID5n76UD4gLoJSUirm/TbTp0q0EE1FoiznbPzeqwDcPuKYQDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"458375a08052eb01e7c7a5fea8c6c89780be2baf5c8eb19283bb442182f76676","last_reissued_at":"2026-07-05T10:37:55.647964Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T10:37:55.647964Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2503.17819","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":"2026-07-05T10:37:55Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"TQ/Nw3yWAdDNOfGEDWEaFxo+6uuBxzi2EiZ96miQnVkZMCsLE/FvXcnWnGMPrCTjtsV+RDJbiWXqJ+oL8MV3Aw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-21T08:26:40.979246Z"},"content_sha256":"fd2e9cbb1d9dec256c8c499412f5fe5a35ced7f529d0b2af4695d872f82bb4b7","schema_version":"1.0","event_id":"sha256:fd2e9cbb1d9dec256c8c499412f5fe5a35ced7f529d0b2af4695d872f82bb4b7"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:IWBXLIEAKLVQDZ6HUX7KRRWIS6","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Reflected entropy and islands in a braneworld cosmology","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-th","authors_text":"Ashish Chandra, Debarshi Basu, Himanshu Chourasiya","submitted_at":"2025-03-22T16:47:05Z","abstract_excerpt":"This work investigates the nature of mixed state entanglement and correlation in a braneworld cosmological model, where the bulk geometry is described by an eternal BTZ black hole truncated by an end-of-the-world brane representing a Friedmann-Robertson-Walker (FRW) cosmology. We explore the holographic reflected entropy for both adjacent and disjoint subsystems using the island prescription and the defect extremal surface prescription. In the large central charge limit, we demonstrate that both prescriptions yield an exact agreement. Additionally, we analyze the time evolution of reflected en"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2503.17819","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/2503.17819/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":"2026-07-05T10:37:55Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9X3wcH0r19skmE6BbPLmcayIGhDF8tix+QQI6gb4TJvELaEGbx/AtE8I6CAdW+TzHl1OeJsCcaL44vGI1MWQBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-21T08:26:40.981015Z"},"content_sha256":"c8b5c7d286a29abfe7b39ce49b931804ff7f8bcf1941ae7e560ce252ccd30955","schema_version":"1.0","event_id":"sha256:c8b5c7d286a29abfe7b39ce49b931804ff7f8bcf1941ae7e560ce252ccd30955"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/IWBXLIEAKLVQDZ6HUX7KRRWIS6/bundle.json","state_url":"https://pith.science/pith/IWBXLIEAKLVQDZ6HUX7KRRWIS6/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/IWBXLIEAKLVQDZ6HUX7KRRWIS6/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":"2026-08-21T08:26:40Z","links":{"resolver":"https://pith.science/pith/IWBXLIEAKLVQDZ6HUX7KRRWIS6","bundle":"https://pith.science/pith/IWBXLIEAKLVQDZ6HUX7KRRWIS6/bundle.json","state":"https://pith.science/pith/IWBXLIEAKLVQDZ6HUX7KRRWIS6/state.json","well_known_bundle":"https://pith.science/.well-known/pith/IWBXLIEAKLVQDZ6HUX7KRRWIS6/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:IWBXLIEAKLVQDZ6HUX7KRRWIS6","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":"c175076873752299376f25dc4a1e080843274b125b1070508127cb4e547c588e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2025-03-22T16:47:05Z","title_canon_sha256":"d5f2adac23001cb7a118f2925fc40f7b8facd9b1294de11216071d39752654b6"},"schema_version":"1.0","source":{"id":"2503.17819","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2503.17819","created_at":"2026-07-05T10:37:55Z"},{"alias_kind":"arxiv_version","alias_value":"2503.17819v1","created_at":"2026-07-05T10:37:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2503.17819","created_at":"2026-07-05T10:37:55Z"},{"alias_kind":"pith_short_12","alias_value":"IWBXLIEAKLVQ","created_at":"2026-07-05T10:37:55Z"},{"alias_kind":"pith_short_16","alias_value":"IWBXLIEAKLVQDZ6H","created_at":"2026-07-05T10:37:55Z"},{"alias_kind":"pith_short_8","alias_value":"IWBXLIEA","created_at":"2026-07-05T10:37:55Z"}],"graph_snapshots":[{"event_id":"sha256:c8b5c7d286a29abfe7b39ce49b931804ff7f8bcf1941ae7e560ce252ccd30955","target":"graph","created_at":"2026-07-05T10:37:55Z","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/2503.17819/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"This work investigates the nature of mixed state entanglement and correlation in a braneworld cosmological model, where the bulk geometry is described by an eternal BTZ black hole truncated by an end-of-the-world brane representing a Friedmann-Robertson-Walker (FRW) cosmology. We explore the holographic reflected entropy for both adjacent and disjoint subsystems using the island prescription and the defect extremal surface prescription. In the large central charge limit, we demonstrate that both prescriptions yield an exact agreement. Additionally, we analyze the time evolution of reflected en","authors_text":"Ashish Chandra, Debarshi Basu, Himanshu Chourasiya","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2025-03-22T16:47:05Z","title":"Reflected entropy and islands in a braneworld cosmology"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2503.17819","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:fd2e9cbb1d9dec256c8c499412f5fe5a35ced7f529d0b2af4695d872f82bb4b7","target":"record","created_at":"2026-07-05T10:37:55Z","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":"c175076873752299376f25dc4a1e080843274b125b1070508127cb4e547c588e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2025-03-22T16:47:05Z","title_canon_sha256":"d5f2adac23001cb7a118f2925fc40f7b8facd9b1294de11216071d39752654b6"},"schema_version":"1.0","source":{"id":"2503.17819","kind":"arxiv","version":1}},"canonical_sha256":"458375a08052eb01e7c7a5fea8c6c89780be2baf5c8eb19283bb442182f76676","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"458375a08052eb01e7c7a5fea8c6c89780be2baf5c8eb19283bb442182f76676","first_computed_at":"2026-07-05T10:37:55.647964Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T10:37:55.647964Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"sGhJu/LNBqU+cQXP2LPNHn/FtupudgLfK4WmxID5n76UD4gLoJSUirm/TbTp0q0EE1FoiznbPzeqwDcPuKYQDQ==","signature_status":"signed_v1","signed_at":"2026-07-05T10:37:55.648470Z","signed_message":"canonical_sha256_bytes"},"source_id":"2503.17819","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:fd2e9cbb1d9dec256c8c499412f5fe5a35ced7f529d0b2af4695d872f82bb4b7","sha256:c8b5c7d286a29abfe7b39ce49b931804ff7f8bcf1941ae7e560ce252ccd30955"],"state_sha256":"d853625c5541ce9dff189d171aa19eedf39e78cfbd315346e8044a12b09521fe"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"zt0DvQ0m6qMIjdPbSyffi5nzwvOde0TktKfgabHxkIk4bsB55Tsf/7Ozr2ncNkuZjUchEguDRfQmNwla5uAVCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-21T08:26:40.985491Z","bundle_sha256":"37a9f561fd70f1fb2daab39fd4ecaeda4489379b48e93c4aaf3e17f9d346aa69"}}