{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:2WQ57VF7YOLA4QRT65GRK6RL2D","short_pith_number":"pith:2WQ57VF7","canonical_record":{"source":{"id":"1804.05498","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"quant-ph","submitted_at":"2018-04-16T04:00:36Z","cross_cats_sorted":[],"title_canon_sha256":"03afa395a6a7c1af7e9bd60084ce7f29547de35e0b6a90a779492684787e1c8d","abstract_canon_sha256":"fbcbe024730a59a8b38e655f61eb3a61bef6c245a8bc983a21e9e40f0dc9bb5f"},"schema_version":"1.0"},"canonical_sha256":"d5a1dfd4bfc3960e4233f74d157a2bd0f8f924fab4f7e0887de54c025898c926","source":{"kind":"arxiv","id":"1804.05498","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1804.05498","created_at":"2026-05-17T23:54:31Z"},{"alias_kind":"arxiv_version","alias_value":"1804.05498v2","created_at":"2026-05-17T23:54:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1804.05498","created_at":"2026-05-17T23:54:31Z"},{"alias_kind":"pith_short_12","alias_value":"2WQ57VF7YOLA","created_at":"2026-05-18T12:32:02Z"},{"alias_kind":"pith_short_16","alias_value":"2WQ57VF7YOLA4QRT","created_at":"2026-05-18T12:32:02Z"},{"alias_kind":"pith_short_8","alias_value":"2WQ57VF7","created_at":"2026-05-18T12:32:02Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:2WQ57VF7YOLA4QRT65GRK6RL2D","target":"record","payload":{"canonical_record":{"source":{"id":"1804.05498","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"quant-ph","submitted_at":"2018-04-16T04:00:36Z","cross_cats_sorted":[],"title_canon_sha256":"03afa395a6a7c1af7e9bd60084ce7f29547de35e0b6a90a779492684787e1c8d","abstract_canon_sha256":"fbcbe024730a59a8b38e655f61eb3a61bef6c245a8bc983a21e9e40f0dc9bb5f"},"schema_version":"1.0"},"canonical_sha256":"d5a1dfd4bfc3960e4233f74d157a2bd0f8f924fab4f7e0887de54c025898c926","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:54:31.838760Z","signature_b64":"QIBghCBNJdxqalDrNIWADk09489mLGEdgEOdOfGkU8fJb4NK9V8+CrU9DnKqnWblmJgV1nZ9Z0EwxYkEpL0RBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d5a1dfd4bfc3960e4233f74d157a2bd0f8f924fab4f7e0887de54c025898c926","last_reissued_at":"2026-05-17T23:54:31.838042Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:54:31.838042Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1804.05498","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-17T23:54:31Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"DK5Ja7tjieHCXcSsfUCldEEoLAS9s0Xu4dgUSGFOg/fy1Z3kwr5fYpm8hTk6DYovN4UyHdU03v39lCN+cYmfAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T20:06:36.618423Z"},"content_sha256":"0c404dd38f9ba53d69931672d078cda060e30ab06cb45898c6762c1785b7df1f","schema_version":"1.0","event_id":"sha256:0c404dd38f9ba53d69931672d078cda060e30ab06cb45898c6762c1785b7df1f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:2WQ57VF7YOLA4QRT65GRK6RL2D","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Violation of a causal inequality in a spacetime with definite causal order","license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Christina Giarmatzi, C. T. Marco Ho, Fabio Costa, Timothy C. Ralph","submitted_at":"2018-04-16T04:00:36Z","abstract_excerpt":"Processes with an indefinite causal structure may violate a causal inequality, which quantifies quantum correlations that arise from a lack of causal order. In this paper, we show that when the inequalities are analysed with a Gaussian-localised field theoretic definition of particles and labs, the causal indeterminacy of the fields themselves allows a causal inequality to be violated within the causal structure of Minkowski spacetime. We quantify the violation of the inequality and determine the optimal ordering of observers."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1804.05498","kind":"arxiv","version":2},"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":"2026-05-17T23:54:31Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Ol/Pb/M4faP0fffNQ1L8xAcP3ih4KK/tcbvsVoa0ts0nbJllBDbMUePvynRHIh1LhMYMmYP+VadqkP6m3tMnDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T20:06:36.618776Z"},"content_sha256":"3aca7feca5340f1c9f052651aa0af730e514bf569e8ac4cd062151b5775188fe","schema_version":"1.0","event_id":"sha256:3aca7feca5340f1c9f052651aa0af730e514bf569e8ac4cd062151b5775188fe"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/2WQ57VF7YOLA4QRT65GRK6RL2D/bundle.json","state_url":"https://pith.science/pith/2WQ57VF7YOLA4QRT65GRK6RL2D/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/2WQ57VF7YOLA4QRT65GRK6RL2D/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":"2026-05-28T20:06:36Z","links":{"resolver":"https://pith.science/pith/2WQ57VF7YOLA4QRT65GRK6RL2D","bundle":"https://pith.science/pith/2WQ57VF7YOLA4QRT65GRK6RL2D/bundle.json","state":"https://pith.science/pith/2WQ57VF7YOLA4QRT65GRK6RL2D/state.json","well_known_bundle":"https://pith.science/.well-known/pith/2WQ57VF7YOLA4QRT65GRK6RL2D/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:2WQ57VF7YOLA4QRT65GRK6RL2D","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":"fbcbe024730a59a8b38e655f61eb3a61bef6c245a8bc983a21e9e40f0dc9bb5f","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"quant-ph","submitted_at":"2018-04-16T04:00:36Z","title_canon_sha256":"03afa395a6a7c1af7e9bd60084ce7f29547de35e0b6a90a779492684787e1c8d"},"schema_version":"1.0","source":{"id":"1804.05498","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1804.05498","created_at":"2026-05-17T23:54:31Z"},{"alias_kind":"arxiv_version","alias_value":"1804.05498v2","created_at":"2026-05-17T23:54:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1804.05498","created_at":"2026-05-17T23:54:31Z"},{"alias_kind":"pith_short_12","alias_value":"2WQ57VF7YOLA","created_at":"2026-05-18T12:32:02Z"},{"alias_kind":"pith_short_16","alias_value":"2WQ57VF7YOLA4QRT","created_at":"2026-05-18T12:32:02Z"},{"alias_kind":"pith_short_8","alias_value":"2WQ57VF7","created_at":"2026-05-18T12:32:02Z"}],"graph_snapshots":[{"event_id":"sha256:3aca7feca5340f1c9f052651aa0af730e514bf569e8ac4cd062151b5775188fe","target":"graph","created_at":"2026-05-17T23:54:31Z","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":"Processes with an indefinite causal structure may violate a causal inequality, which quantifies quantum correlations that arise from a lack of causal order. In this paper, we show that when the inequalities are analysed with a Gaussian-localised field theoretic definition of particles and labs, the causal indeterminacy of the fields themselves allows a causal inequality to be violated within the causal structure of Minkowski spacetime. We quantify the violation of the inequality and determine the optimal ordering of observers.","authors_text":"Christina Giarmatzi, C. T. Marco Ho, Fabio Costa, Timothy C. Ralph","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"quant-ph","submitted_at":"2018-04-16T04:00:36Z","title":"Violation of a causal inequality in a spacetime with definite causal order"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1804.05498","kind":"arxiv","version":2},"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":"sha256:0c404dd38f9ba53d69931672d078cda060e30ab06cb45898c6762c1785b7df1f","target":"record","created_at":"2026-05-17T23:54:31Z","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":"fbcbe024730a59a8b38e655f61eb3a61bef6c245a8bc983a21e9e40f0dc9bb5f","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"quant-ph","submitted_at":"2018-04-16T04:00:36Z","title_canon_sha256":"03afa395a6a7c1af7e9bd60084ce7f29547de35e0b6a90a779492684787e1c8d"},"schema_version":"1.0","source":{"id":"1804.05498","kind":"arxiv","version":2}},"canonical_sha256":"d5a1dfd4bfc3960e4233f74d157a2bd0f8f924fab4f7e0887de54c025898c926","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d5a1dfd4bfc3960e4233f74d157a2bd0f8f924fab4f7e0887de54c025898c926","first_computed_at":"2026-05-17T23:54:31.838042Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:54:31.838042Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"QIBghCBNJdxqalDrNIWADk09489mLGEdgEOdOfGkU8fJb4NK9V8+CrU9DnKqnWblmJgV1nZ9Z0EwxYkEpL0RBA==","signature_status":"signed_v1","signed_at":"2026-05-17T23:54:31.838760Z","signed_message":"canonical_sha256_bytes"},"source_id":"1804.05498","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0c404dd38f9ba53d69931672d078cda060e30ab06cb45898c6762c1785b7df1f","sha256:3aca7feca5340f1c9f052651aa0af730e514bf569e8ac4cd062151b5775188fe"],"state_sha256":"4be8e100407b7f94601bbb20e1aab9a1766e3ebfc342643b31a4c76e9ef3e426"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9BcSkTGL0XOqriRJ8N2gCxwleFmTaNiquuvh+WNswzan8NhwTnSMKo1YrOb5GjTJRjjYFgyHhCWtN3/UdFOqBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T20:06:36.620843Z","bundle_sha256":"033c46f52484155a27f6a308a08b0af552dc9ed023a25c96ec40b887c9f9de3b"}}