{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2023:X75DHBRCAS5OACEK552LGHPYPO","short_pith_number":"pith:X75DHBRC","canonical_record":{"source":{"id":"2309.03987","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2023-09-07T19:40:35Z","cross_cats_sorted":[],"title_canon_sha256":"9edd3a3b72840cc85f4536dd7efa441c5c64e32a55b9defb808e7f04255b2cf4","abstract_canon_sha256":"8909724d66749903180c6d9e0d6035d15fef351c0649207273238cbf4944c446"},"schema_version":"1.0"},"canonical_sha256":"bffa33862204bae0088aef74b31df87b8cad3b6cd7800088353a0aaa8c667634","source":{"kind":"arxiv","id":"2309.03987","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2309.03987","created_at":"2026-07-05T07:55:59Z"},{"alias_kind":"arxiv_version","alias_value":"2309.03987v2","created_at":"2026-07-05T07:55:59Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2309.03987","created_at":"2026-07-05T07:55:59Z"},{"alias_kind":"pith_short_12","alias_value":"X75DHBRCAS5O","created_at":"2026-07-05T07:55:59Z"},{"alias_kind":"pith_short_16","alias_value":"X75DHBRCAS5OACEK","created_at":"2026-07-05T07:55:59Z"},{"alias_kind":"pith_short_8","alias_value":"X75DHBRC","created_at":"2026-07-05T07:55:59Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2023:X75DHBRCAS5OACEK552LGHPYPO","target":"record","payload":{"canonical_record":{"source":{"id":"2309.03987","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2023-09-07T19:40:35Z","cross_cats_sorted":[],"title_canon_sha256":"9edd3a3b72840cc85f4536dd7efa441c5c64e32a55b9defb808e7f04255b2cf4","abstract_canon_sha256":"8909724d66749903180c6d9e0d6035d15fef351c0649207273238cbf4944c446"},"schema_version":"1.0"},"canonical_sha256":"bffa33862204bae0088aef74b31df87b8cad3b6cd7800088353a0aaa8c667634","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T07:55:59.129361Z","signature_b64":"mvzmOY5iiH8wGL4+FcxeV9mU3R3/T9ehANtqsF/whhFRFXqTOvB9kTAjOPsGrSoBX9G3skZtefePN7e72hpfBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"bffa33862204bae0088aef74b31df87b8cad3b6cd7800088353a0aaa8c667634","last_reissued_at":"2026-07-05T07:55:59.128864Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T07:55:59.128864Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2309.03987","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":"2026-07-05T07:55:59Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"C/3ZM8vniz109vppHpeiZwBY6arLJKxMhitWfNmwVvnY33iJLdiPFkTQZg20R1QCCtGJubS1djUos3VudNpbBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-08T18:06:54.807161Z"},"content_sha256":"8e59f6d031a57265b5461500afadc3407183975e307767f2f0198e392dcd91fa","schema_version":"1.0","event_id":"sha256:8e59f6d031a57265b5461500afadc3407183975e307767f2f0198e392dcd91fa"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2023:X75DHBRCAS5OACEK552LGHPYPO","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Neutron spin echo is a \"quantum tale of two paths''","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"A. A. M. Irfan, G. Ortiz, I. I. Kravchenko, N. Geerits, N. V. Lavrik, Q. Le Thien, R. M. Dalgliesh, R. Pynn, S. McKay, S. R. Parnell","submitted_at":"2023-09-07T19:40:35Z","abstract_excerpt":"We describe an experiment that strongly supports a two-path interferometric model in which the spin-up and spin-down components of each neutron propagate coherently along spatially separated parallel paths in a typical neutron spin echo small angle scattering (SESANS) experiment. Specifically, we show that the usual semi-classical, single-path treatment of Larmor precession of a polarized neutron in an external magnetic field predicts a damping as a function of the spin echo length of the SESANS signal obtained with a periodic phase grating when the transverse width of the neutron wave packet "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2309.03987","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2309.03987/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":"2026-07-05T07:55:59Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"4tghY3kZ2qumpaYTcHIOUwRfAI60S2/izqnvPaZ43qfxIrrvyvzk09MXlkKHfdzbZqBrNPrkCiIKDK/75FA2Ag==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-08T18:06:54.807545Z"},"content_sha256":"0e9b70fcb8dbd14273517a68655cfc028bc5fb495fbc875d68a4764274fc1c88","schema_version":"1.0","event_id":"sha256:0e9b70fcb8dbd14273517a68655cfc028bc5fb495fbc875d68a4764274fc1c88"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/X75DHBRCAS5OACEK552LGHPYPO/bundle.json","state_url":"https://pith.science/pith/X75DHBRCAS5OACEK552LGHPYPO/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/X75DHBRCAS5OACEK552LGHPYPO/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":"2026-07-08T18:06:54Z","links":{"resolver":"https://pith.science/pith/X75DHBRCAS5OACEK552LGHPYPO","bundle":"https://pith.science/pith/X75DHBRCAS5OACEK552LGHPYPO/bundle.json","state":"https://pith.science/pith/X75DHBRCAS5OACEK552LGHPYPO/state.json","well_known_bundle":"https://pith.science/.well-known/pith/X75DHBRCAS5OACEK552LGHPYPO/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:X75DHBRCAS5OACEK552LGHPYPO","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":"8909724d66749903180c6d9e0d6035d15fef351c0649207273238cbf4944c446","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2023-09-07T19:40:35Z","title_canon_sha256":"9edd3a3b72840cc85f4536dd7efa441c5c64e32a55b9defb808e7f04255b2cf4"},"schema_version":"1.0","source":{"id":"2309.03987","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2309.03987","created_at":"2026-07-05T07:55:59Z"},{"alias_kind":"arxiv_version","alias_value":"2309.03987v2","created_at":"2026-07-05T07:55:59Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2309.03987","created_at":"2026-07-05T07:55:59Z"},{"alias_kind":"pith_short_12","alias_value":"X75DHBRCAS5O","created_at":"2026-07-05T07:55:59Z"},{"alias_kind":"pith_short_16","alias_value":"X75DHBRCAS5OACEK","created_at":"2026-07-05T07:55:59Z"},{"alias_kind":"pith_short_8","alias_value":"X75DHBRC","created_at":"2026-07-05T07:55:59Z"}],"graph_snapshots":[{"event_id":"sha256:0e9b70fcb8dbd14273517a68655cfc028bc5fb495fbc875d68a4764274fc1c88","target":"graph","created_at":"2026-07-05T07:55:59Z","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/2309.03987/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We describe an experiment that strongly supports a two-path interferometric model in which the spin-up and spin-down components of each neutron propagate coherently along spatially separated parallel paths in a typical neutron spin echo small angle scattering (SESANS) experiment. Specifically, we show that the usual semi-classical, single-path treatment of Larmor precession of a polarized neutron in an external magnetic field predicts a damping as a function of the spin echo length of the SESANS signal obtained with a periodic phase grating when the transverse width of the neutron wave packet ","authors_text":"A. A. M. Irfan, G. Ortiz, I. I. Kravchenko, N. Geerits, N. V. Lavrik, Q. Le Thien, R. M. Dalgliesh, R. Pynn, S. McKay, S. R. Parnell","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2023-09-07T19:40:35Z","title":"Neutron spin echo is a \"quantum tale of two paths''"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2309.03987","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":"sha256:8e59f6d031a57265b5461500afadc3407183975e307767f2f0198e392dcd91fa","target":"record","created_at":"2026-07-05T07:55:59Z","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":"8909724d66749903180c6d9e0d6035d15fef351c0649207273238cbf4944c446","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2023-09-07T19:40:35Z","title_canon_sha256":"9edd3a3b72840cc85f4536dd7efa441c5c64e32a55b9defb808e7f04255b2cf4"},"schema_version":"1.0","source":{"id":"2309.03987","kind":"arxiv","version":2}},"canonical_sha256":"bffa33862204bae0088aef74b31df87b8cad3b6cd7800088353a0aaa8c667634","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"bffa33862204bae0088aef74b31df87b8cad3b6cd7800088353a0aaa8c667634","first_computed_at":"2026-07-05T07:55:59.128864Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T07:55:59.128864Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"mvzmOY5iiH8wGL4+FcxeV9mU3R3/T9ehANtqsF/whhFRFXqTOvB9kTAjOPsGrSoBX9G3skZtefePN7e72hpfBg==","signature_status":"signed_v1","signed_at":"2026-07-05T07:55:59.129361Z","signed_message":"canonical_sha256_bytes"},"source_id":"2309.03987","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:8e59f6d031a57265b5461500afadc3407183975e307767f2f0198e392dcd91fa","sha256:0e9b70fcb8dbd14273517a68655cfc028bc5fb495fbc875d68a4764274fc1c88"],"state_sha256":"d04f9c9a39c7f72082f71750edcbd0c1741d9bdfe1dd21649090eb3312be79dd"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"tgGCoCB3TSC+REaL4sN7eRSuytF44Ep5YEKSGTOjY3nSFZG3O53Dr+1qeTKJHwm6ZxqZzbxhYFXSYO5BBD3xBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-08T18:06:54.809860Z","bundle_sha256":"835496458b66a96d4e2e398da9de79c8392a67217496bbd45d607b05054c1d10"}}