{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:XSPMWSTVQO4XA4BVODAAQGQDMJ","short_pith_number":"pith:XSPMWSTV","canonical_record":{"source":{"id":"1211.2043","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2012-11-09T05:01:30Z","cross_cats_sorted":["cond-mat.stat-mech","quant-ph"],"title_canon_sha256":"29bc2aea2cfdb1410628becff4c96e5fb957679328e0098e6fc9240d973dc721","abstract_canon_sha256":"9adc69db0c9544b9174cbb1186452c1b2ea1a3bc8240e3b5896dda9f9c7731b1"},"schema_version":"1.0"},"canonical_sha256":"bc9ecb4a7583b970703570c0081a0362511facfd0243bb08e46f0cd2d1eb58fe","source":{"kind":"arxiv","id":"1211.2043","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1211.2043","created_at":"2026-05-18T01:53:17Z"},{"alias_kind":"arxiv_version","alias_value":"1211.2043v1","created_at":"2026-05-18T01:53:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1211.2043","created_at":"2026-05-18T01:53:17Z"},{"alias_kind":"pith_short_12","alias_value":"XSPMWSTVQO4X","created_at":"2026-05-18T12:27:27Z"},{"alias_kind":"pith_short_16","alias_value":"XSPMWSTVQO4XA4BV","created_at":"2026-05-18T12:27:27Z"},{"alias_kind":"pith_short_8","alias_value":"XSPMWSTV","created_at":"2026-05-18T12:27:27Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:XSPMWSTVQO4XA4BVODAAQGQDMJ","target":"record","payload":{"canonical_record":{"source":{"id":"1211.2043","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2012-11-09T05:01:30Z","cross_cats_sorted":["cond-mat.stat-mech","quant-ph"],"title_canon_sha256":"29bc2aea2cfdb1410628becff4c96e5fb957679328e0098e6fc9240d973dc721","abstract_canon_sha256":"9adc69db0c9544b9174cbb1186452c1b2ea1a3bc8240e3b5896dda9f9c7731b1"},"schema_version":"1.0"},"canonical_sha256":"bc9ecb4a7583b970703570c0081a0362511facfd0243bb08e46f0cd2d1eb58fe","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:53:17.690807Z","signature_b64":"x5dzJUaPqQeuEmqEkbjlrfkGFr3LZSClxfLsurGH/6Cxz94InC6b0u8zV9LDSxfM2CkLEyQVXMJ4oJQwCpUSAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"bc9ecb4a7583b970703570c0081a0362511facfd0243bb08e46f0cd2d1eb58fe","last_reissued_at":"2026-05-18T01:53:17.690362Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:53:17.690362Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1211.2043","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":"2026-05-18T01:53:17Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5WsRepj+QS46BkGp06hRsPz4vQLga5MC07PubTnrdLf8ZAJI1Xcj6P8KM9Hn2Eg4dmkpQUQrdObRj9ZcVAFlAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T16:32:52.031951Z"},"content_sha256":"2b459404834264859638d97ffbac560c9a1fb5c6cdb0c89daf614419afb45c13","schema_version":"1.0","event_id":"sha256:2b459404834264859638d97ffbac560c9a1fb5c6cdb0c89daf614419afb45c13"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:XSPMWSTVQO4XA4BVODAAQGQDMJ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Entanglement signatures of phase transition in higher-derivative quantum field theories","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.stat-mech","quant-ph"],"primary_cat":"hep-th","authors_text":"S. Shankaranarayanan, Suman Ghosh","submitted_at":"2012-11-09T05:01:30Z","abstract_excerpt":"We show that the variation of the ground state entanglement in linear, higher spatial derivatives field theories at zero-temperature have signatures of phase transition. Around the critical point, when the dispersion relation changes from linear to non-linear, there is a fundamental change in the reduced density matrix leading to a change in the scaling of entanglement entropy. We suggest possible explanations involving both kinematical and dynamical effects. We discuss the implication of our work for 2-D condensed matter systems, black-hole entropy and models of quantum gravity."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1211.2043","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":""},"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":"2026-05-18T01:53:17Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"xJ03QZNMe09/l7Z2FpkwybSGhnXhJTNUjq2Iex8ZM1AJ2IP34csivSrcV5z4B78sh6JYeyt4zFURQ/kVCLGvCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T16:32:52.032622Z"},"content_sha256":"a8d8ca1284a9acb8d0a79264ae0510e0b45223a34d6cfbf975b0001e640aae15","schema_version":"1.0","event_id":"sha256:a8d8ca1284a9acb8d0a79264ae0510e0b45223a34d6cfbf975b0001e640aae15"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/XSPMWSTVQO4XA4BVODAAQGQDMJ/bundle.json","state_url":"https://pith.science/pith/XSPMWSTVQO4XA4BVODAAQGQDMJ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/XSPMWSTVQO4XA4BVODAAQGQDMJ/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":"2026-05-30T16:32:52Z","links":{"resolver":"https://pith.science/pith/XSPMWSTVQO4XA4BVODAAQGQDMJ","bundle":"https://pith.science/pith/XSPMWSTVQO4XA4BVODAAQGQDMJ/bundle.json","state":"https://pith.science/pith/XSPMWSTVQO4XA4BVODAAQGQDMJ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/XSPMWSTVQO4XA4BVODAAQGQDMJ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:XSPMWSTVQO4XA4BVODAAQGQDMJ","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":"9adc69db0c9544b9174cbb1186452c1b2ea1a3bc8240e3b5896dda9f9c7731b1","cross_cats_sorted":["cond-mat.stat-mech","quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2012-11-09T05:01:30Z","title_canon_sha256":"29bc2aea2cfdb1410628becff4c96e5fb957679328e0098e6fc9240d973dc721"},"schema_version":"1.0","source":{"id":"1211.2043","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1211.2043","created_at":"2026-05-18T01:53:17Z"},{"alias_kind":"arxiv_version","alias_value":"1211.2043v1","created_at":"2026-05-18T01:53:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1211.2043","created_at":"2026-05-18T01:53:17Z"},{"alias_kind":"pith_short_12","alias_value":"XSPMWSTVQO4X","created_at":"2026-05-18T12:27:27Z"},{"alias_kind":"pith_short_16","alias_value":"XSPMWSTVQO4XA4BV","created_at":"2026-05-18T12:27:27Z"},{"alias_kind":"pith_short_8","alias_value":"XSPMWSTV","created_at":"2026-05-18T12:27:27Z"}],"graph_snapshots":[{"event_id":"sha256:a8d8ca1284a9acb8d0a79264ae0510e0b45223a34d6cfbf975b0001e640aae15","target":"graph","created_at":"2026-05-18T01:53:17Z","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"},"paper":{"abstract_excerpt":"We show that the variation of the ground state entanglement in linear, higher spatial derivatives field theories at zero-temperature have signatures of phase transition. Around the critical point, when the dispersion relation changes from linear to non-linear, there is a fundamental change in the reduced density matrix leading to a change in the scaling of entanglement entropy. We suggest possible explanations involving both kinematical and dynamical effects. We discuss the implication of our work for 2-D condensed matter systems, black-hole entropy and models of quantum gravity.","authors_text":"S. Shankaranarayanan, Suman Ghosh","cross_cats":["cond-mat.stat-mech","quant-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2012-11-09T05:01:30Z","title":"Entanglement signatures of phase transition in higher-derivative quantum field theories"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1211.2043","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":"sha256:2b459404834264859638d97ffbac560c9a1fb5c6cdb0c89daf614419afb45c13","target":"record","created_at":"2026-05-18T01:53:17Z","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":"9adc69db0c9544b9174cbb1186452c1b2ea1a3bc8240e3b5896dda9f9c7731b1","cross_cats_sorted":["cond-mat.stat-mech","quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2012-11-09T05:01:30Z","title_canon_sha256":"29bc2aea2cfdb1410628becff4c96e5fb957679328e0098e6fc9240d973dc721"},"schema_version":"1.0","source":{"id":"1211.2043","kind":"arxiv","version":1}},"canonical_sha256":"bc9ecb4a7583b970703570c0081a0362511facfd0243bb08e46f0cd2d1eb58fe","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"bc9ecb4a7583b970703570c0081a0362511facfd0243bb08e46f0cd2d1eb58fe","first_computed_at":"2026-05-18T01:53:17.690362Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:53:17.690362Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"x5dzJUaPqQeuEmqEkbjlrfkGFr3LZSClxfLsurGH/6Cxz94InC6b0u8zV9LDSxfM2CkLEyQVXMJ4oJQwCpUSAg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:53:17.690807Z","signed_message":"canonical_sha256_bytes"},"source_id":"1211.2043","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2b459404834264859638d97ffbac560c9a1fb5c6cdb0c89daf614419afb45c13","sha256:a8d8ca1284a9acb8d0a79264ae0510e0b45223a34d6cfbf975b0001e640aae15"],"state_sha256":"2bcbe922db7bb2dc5e266b460ebd5e02858e502a16ea102d590a8156b8d32bb3"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5s8HyprLWdSl/WG4V3wMmE8QZrpWUAcDWPHD8G+w9JFCvKhlOpSG3/MaO2a5N7rtnofe2nllQvpQDUNAAp1VBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-30T16:32:52.036214Z","bundle_sha256":"36a3dfdcd72c912b1b46353df1c7046da3cee68b3f5e44241a0833d39b18a3f0"}}