{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:A4RZKTJ6EHQGLQINR2JI2RTLUB","short_pith_number":"pith:A4RZKTJ6","canonical_record":{"source":{"id":"1811.05382","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2018-11-13T16:19:06Z","cross_cats_sorted":[],"title_canon_sha256":"a3bab8f00f96800b8d924879f58afc9c42752689d71736846663ccfb38814db2","abstract_canon_sha256":"6f93d0fbfcaabc5b3ebaaa515e37b561d255f36f7f554e6252c89087458af1bf"},"schema_version":"1.0"},"canonical_sha256":"0723954d3e21e065c10d8e928d466ba05ab110818d0579c7784bf4fd001a6bee","source":{"kind":"arxiv","id":"1811.05382","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1811.05382","created_at":"2026-07-05T00:29:59Z"},{"alias_kind":"arxiv_version","alias_value":"1811.05382v3","created_at":"2026-07-05T00:29:59Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1811.05382","created_at":"2026-07-05T00:29:59Z"},{"alias_kind":"pith_short_12","alias_value":"A4RZKTJ6EHQG","created_at":"2026-07-05T00:29:59Z"},{"alias_kind":"pith_short_16","alias_value":"A4RZKTJ6EHQGLQIN","created_at":"2026-07-05T00:29:59Z"},{"alias_kind":"pith_short_8","alias_value":"A4RZKTJ6","created_at":"2026-07-05T00:29:59Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:A4RZKTJ6EHQGLQINR2JI2RTLUB","target":"record","payload":{"canonical_record":{"source":{"id":"1811.05382","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2018-11-13T16:19:06Z","cross_cats_sorted":[],"title_canon_sha256":"a3bab8f00f96800b8d924879f58afc9c42752689d71736846663ccfb38814db2","abstract_canon_sha256":"6f93d0fbfcaabc5b3ebaaa515e37b561d255f36f7f554e6252c89087458af1bf"},"schema_version":"1.0"},"canonical_sha256":"0723954d3e21e065c10d8e928d466ba05ab110818d0579c7784bf4fd001a6bee","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T00:29:59.433392Z","signature_b64":"LuDEPuTyui+MK8TIQQtm+t/zoV9PcITL3S7m2/FE6Eb9QdqgjoqWKPJw/3Wo/tqcZSITTYJFSDM3vNlUbvNwDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"0723954d3e21e065c10d8e928d466ba05ab110818d0579c7784bf4fd001a6bee","last_reissued_at":"2026-07-05T00:29:59.432850Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T00:29:59.432850Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1811.05382","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T00:29:59Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"cT5BTNyFOw8hO6bwbhDWnbSi7a9sHiAqH9DazuV1t2eiUwligzeW5yJRuHlLhLG7u5mgWIQzAOZlEg0WcmHrCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T09:15:36.126510Z"},"content_sha256":"97aa11b301924202279630b81cab14aa55062e354fb8b2d744844865f7c981ca","schema_version":"1.0","event_id":"sha256:97aa11b301924202279630b81cab14aa55062e354fb8b2d744844865f7c981ca"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:A4RZKTJ6EHQGLQINR2JI2RTLUB","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Flat entanglement spectra in fixed-area states of quantum gravity","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-th","authors_text":"Daniel Harlow, Donald Marolf, Xi Dong","submitted_at":"2018-11-13T16:19:06Z","abstract_excerpt":"We use the Einstein-Hilbert gravitational path integral to investigate gravitational entanglement at leading order $O(1/G)$. We argue that semiclassical states prepared by a Euclidean path integral have the property that projecting them onto a subspace in which the Ryu-Takayanagi or Hubeny-Rangamani-Takayanagi surface has definite area gives a state with a flat entanglement spectrum at this order in gravitational perturbation theory. This means that the reduced density matrix can be approximated as proportional to the identity to the extent that its Renyi entropies $S_n$ are independent of $n$"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1811.05382","kind":"arxiv","version":3},"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/1811.05382/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":"2026-07-05T00:29:59Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"rBXPbjvq46I5wUujMALEoMuy6jg+m7W3eXVgFRzVV8Wc+3unCzN51ZJsczoLDSgBVgQnviFUF15sAw1bOvUyAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T09:15:36.127305Z"},"content_sha256":"6cba883895a7b50e6f34fea83d58c88218f8b7851c49c3f18fc81c365633ec9d","schema_version":"1.0","event_id":"sha256:6cba883895a7b50e6f34fea83d58c88218f8b7851c49c3f18fc81c365633ec9d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/A4RZKTJ6EHQGLQINR2JI2RTLUB/bundle.json","state_url":"https://pith.science/pith/A4RZKTJ6EHQGLQINR2JI2RTLUB/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/A4RZKTJ6EHQGLQINR2JI2RTLUB/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":"2026-08-05T09:15:36Z","links":{"resolver":"https://pith.science/pith/A4RZKTJ6EHQGLQINR2JI2RTLUB","bundle":"https://pith.science/pith/A4RZKTJ6EHQGLQINR2JI2RTLUB/bundle.json","state":"https://pith.science/pith/A4RZKTJ6EHQGLQINR2JI2RTLUB/state.json","well_known_bundle":"https://pith.science/.well-known/pith/A4RZKTJ6EHQGLQINR2JI2RTLUB/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:A4RZKTJ6EHQGLQINR2JI2RTLUB","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":"6f93d0fbfcaabc5b3ebaaa515e37b561d255f36f7f554e6252c89087458af1bf","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2018-11-13T16:19:06Z","title_canon_sha256":"a3bab8f00f96800b8d924879f58afc9c42752689d71736846663ccfb38814db2"},"schema_version":"1.0","source":{"id":"1811.05382","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1811.05382","created_at":"2026-07-05T00:29:59Z"},{"alias_kind":"arxiv_version","alias_value":"1811.05382v3","created_at":"2026-07-05T00:29:59Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1811.05382","created_at":"2026-07-05T00:29:59Z"},{"alias_kind":"pith_short_12","alias_value":"A4RZKTJ6EHQG","created_at":"2026-07-05T00:29:59Z"},{"alias_kind":"pith_short_16","alias_value":"A4RZKTJ6EHQGLQIN","created_at":"2026-07-05T00:29:59Z"},{"alias_kind":"pith_short_8","alias_value":"A4RZKTJ6","created_at":"2026-07-05T00:29:59Z"}],"graph_snapshots":[{"event_id":"sha256:6cba883895a7b50e6f34fea83d58c88218f8b7851c49c3f18fc81c365633ec9d","target":"graph","created_at":"2026-07-05T00:29:59Z","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/1811.05382/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We use the Einstein-Hilbert gravitational path integral to investigate gravitational entanglement at leading order $O(1/G)$. We argue that semiclassical states prepared by a Euclidean path integral have the property that projecting them onto a subspace in which the Ryu-Takayanagi or Hubeny-Rangamani-Takayanagi surface has definite area gives a state with a flat entanglement spectrum at this order in gravitational perturbation theory. This means that the reduced density matrix can be approximated as proportional to the identity to the extent that its Renyi entropies $S_n$ are independent of $n$","authors_text":"Daniel Harlow, Donald Marolf, Xi Dong","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2018-11-13T16:19:06Z","title":"Flat entanglement spectra in fixed-area states of quantum gravity"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1811.05382","kind":"arxiv","version":3},"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":"sha256:97aa11b301924202279630b81cab14aa55062e354fb8b2d744844865f7c981ca","target":"record","created_at":"2026-07-05T00:29:59Z","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":"6f93d0fbfcaabc5b3ebaaa515e37b561d255f36f7f554e6252c89087458af1bf","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2018-11-13T16:19:06Z","title_canon_sha256":"a3bab8f00f96800b8d924879f58afc9c42752689d71736846663ccfb38814db2"},"schema_version":"1.0","source":{"id":"1811.05382","kind":"arxiv","version":3}},"canonical_sha256":"0723954d3e21e065c10d8e928d466ba05ab110818d0579c7784bf4fd001a6bee","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"0723954d3e21e065c10d8e928d466ba05ab110818d0579c7784bf4fd001a6bee","first_computed_at":"2026-07-05T00:29:59.432850Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T00:29:59.432850Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"LuDEPuTyui+MK8TIQQtm+t/zoV9PcITL3S7m2/FE6Eb9QdqgjoqWKPJw/3Wo/tqcZSITTYJFSDM3vNlUbvNwDQ==","signature_status":"signed_v1","signed_at":"2026-07-05T00:29:59.433392Z","signed_message":"canonical_sha256_bytes"},"source_id":"1811.05382","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:97aa11b301924202279630b81cab14aa55062e354fb8b2d744844865f7c981ca","sha256:6cba883895a7b50e6f34fea83d58c88218f8b7851c49c3f18fc81c365633ec9d"],"state_sha256":"5709200fcf8c077d3db1199ed396642d11ee61c5e16c0ce986767705bb323952"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"brFiHUKlO7AeaFTDKIhN0Q+eFi6+jrvRMMBVJkrUJcGUl+vSPDcNPxOnl9O1IU80gXTTUKGSFeDq4CjOR8bHAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-05T09:15:36.135303Z","bundle_sha256":"fffb7a40c5b5836fbf36324fbec5d2b5590f61ca0392d5b2a61d8b3baebe924f"}}