{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:KSTXZOOIUCR5IBHSHFAZLW6RMZ","short_pith_number":"pith:KSTXZOOI","canonical_record":{"source":{"id":"1208.5985","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2012-08-29T18:41:07Z","cross_cats_sorted":[],"title_canon_sha256":"affb10b979e357f02f6b9399a11ecef6a3e9ec1f696f886174a4a7f2cd73866b","abstract_canon_sha256":"70e4096493232545aaff9fd67fd8276a5fb85870bde5c994861a8d79a89ae737"},"schema_version":"1.0"},"canonical_sha256":"54a77cb9c8a0a3d404f2394195dbd1667d390256ded2f957d0b4ec4e7feb9d8d","source":{"kind":"arxiv","id":"1208.5985","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1208.5985","created_at":"2026-05-18T03:43:06Z"},{"alias_kind":"arxiv_version","alias_value":"1208.5985v2","created_at":"2026-05-18T03:43:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1208.5985","created_at":"2026-05-18T03:43:06Z"},{"alias_kind":"pith_short_12","alias_value":"KSTXZOOIUCR5","created_at":"2026-05-18T12:27:11Z"},{"alias_kind":"pith_short_16","alias_value":"KSTXZOOIUCR5IBHS","created_at":"2026-05-18T12:27:11Z"},{"alias_kind":"pith_short_8","alias_value":"KSTXZOOI","created_at":"2026-05-18T12:27:11Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:KSTXZOOIUCR5IBHSHFAZLW6RMZ","target":"record","payload":{"canonical_record":{"source":{"id":"1208.5985","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2012-08-29T18:41:07Z","cross_cats_sorted":[],"title_canon_sha256":"affb10b979e357f02f6b9399a11ecef6a3e9ec1f696f886174a4a7f2cd73866b","abstract_canon_sha256":"70e4096493232545aaff9fd67fd8276a5fb85870bde5c994861a8d79a89ae737"},"schema_version":"1.0"},"canonical_sha256":"54a77cb9c8a0a3d404f2394195dbd1667d390256ded2f957d0b4ec4e7feb9d8d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:43:06.897732Z","signature_b64":"dDu8wWerqLKvWyC+kABYluY3Mw8ubt1OBW9mb0ULKuj52ZTDtrEjFmUvM+i2dBqFhgO/CvvDTkRmJ2178lUGBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"54a77cb9c8a0a3d404f2394195dbd1667d390256ded2f957d0b4ec4e7feb9d8d","last_reissued_at":"2026-05-18T03:43:06.896982Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:43:06.896982Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1208.5985","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":"2026-05-18T03:43:06Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8lfHxVDKH5S3NK4AjWh0LtgkMA/TsilWe64eHq1HKF2OGX8S6KFxZJimrvHChLSZAdQUL8QYbkpqJZ/rKSX/CA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T05:06:47.774845Z"},"content_sha256":"10ce68df775124f94accb9d32fdc80b440369b3dbcb1654411876f8038f38fce","schema_version":"1.0","event_id":"sha256:10ce68df775124f94accb9d32fdc80b440369b3dbcb1654411876f8038f38fce"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:KSTXZOOIUCR5IBHSHFAZLW6RMZ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Bosonic behavior of entangled fermions","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Klaus M{\\o}lmer, Malte C. Tichy, Peter Alexander Bouvrie","submitted_at":"2012-08-29T18:41:07Z","abstract_excerpt":"Two bound, entangled fermions form a composite boson, which can be treated as an elementary boson as long as the Pauli principle does not affect the behavior of many such composite bosons. The departure of ideal bosonic behavior is quantified by the normalization ratio of multi-composite-boson states. We derive the two-fermion-states that extremize the normalization ratio for a fixed single-fermion purity P, and establish general tight bounds for this indicator. For very small purities, P<1/N^2, the upper and lower bounds converge, which allows to quantify accurately the departure from perfect"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1208.5985","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":"2026-05-18T03:43:06Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"OP2N6Sm83y9XypgHHyO6l3lTZNk/6XcMzX2Fpha2d5D5VOI3gK9rFndyfoSBJ7p5gd/Iz7lSwk7f5c7GX4o6BA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T05:06:47.775186Z"},"content_sha256":"6701ccdb0be87fe3f4a8cbdff9aa3d54db46d7f52ed484476f924ec48ab579c6","schema_version":"1.0","event_id":"sha256:6701ccdb0be87fe3f4a8cbdff9aa3d54db46d7f52ed484476f924ec48ab579c6"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/KSTXZOOIUCR5IBHSHFAZLW6RMZ/bundle.json","state_url":"https://pith.science/pith/KSTXZOOIUCR5IBHSHFAZLW6RMZ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/KSTXZOOIUCR5IBHSHFAZLW6RMZ/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":"2026-05-30T05:06:47Z","links":{"resolver":"https://pith.science/pith/KSTXZOOIUCR5IBHSHFAZLW6RMZ","bundle":"https://pith.science/pith/KSTXZOOIUCR5IBHSHFAZLW6RMZ/bundle.json","state":"https://pith.science/pith/KSTXZOOIUCR5IBHSHFAZLW6RMZ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/KSTXZOOIUCR5IBHSHFAZLW6RMZ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:KSTXZOOIUCR5IBHSHFAZLW6RMZ","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":"70e4096493232545aaff9fd67fd8276a5fb85870bde5c994861a8d79a89ae737","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2012-08-29T18:41:07Z","title_canon_sha256":"affb10b979e357f02f6b9399a11ecef6a3e9ec1f696f886174a4a7f2cd73866b"},"schema_version":"1.0","source":{"id":"1208.5985","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1208.5985","created_at":"2026-05-18T03:43:06Z"},{"alias_kind":"arxiv_version","alias_value":"1208.5985v2","created_at":"2026-05-18T03:43:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1208.5985","created_at":"2026-05-18T03:43:06Z"},{"alias_kind":"pith_short_12","alias_value":"KSTXZOOIUCR5","created_at":"2026-05-18T12:27:11Z"},{"alias_kind":"pith_short_16","alias_value":"KSTXZOOIUCR5IBHS","created_at":"2026-05-18T12:27:11Z"},{"alias_kind":"pith_short_8","alias_value":"KSTXZOOI","created_at":"2026-05-18T12:27:11Z"}],"graph_snapshots":[{"event_id":"sha256:6701ccdb0be87fe3f4a8cbdff9aa3d54db46d7f52ed484476f924ec48ab579c6","target":"graph","created_at":"2026-05-18T03:43:06Z","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":"Two bound, entangled fermions form a composite boson, which can be treated as an elementary boson as long as the Pauli principle does not affect the behavior of many such composite bosons. The departure of ideal bosonic behavior is quantified by the normalization ratio of multi-composite-boson states. We derive the two-fermion-states that extremize the normalization ratio for a fixed single-fermion purity P, and establish general tight bounds for this indicator. For very small purities, P<1/N^2, the upper and lower bounds converge, which allows to quantify accurately the departure from perfect","authors_text":"Klaus M{\\o}lmer, Malte C. Tichy, Peter Alexander Bouvrie","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2012-08-29T18:41:07Z","title":"Bosonic behavior of entangled fermions"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1208.5985","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":"sha256:10ce68df775124f94accb9d32fdc80b440369b3dbcb1654411876f8038f38fce","target":"record","created_at":"2026-05-18T03:43:06Z","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":"70e4096493232545aaff9fd67fd8276a5fb85870bde5c994861a8d79a89ae737","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2012-08-29T18:41:07Z","title_canon_sha256":"affb10b979e357f02f6b9399a11ecef6a3e9ec1f696f886174a4a7f2cd73866b"},"schema_version":"1.0","source":{"id":"1208.5985","kind":"arxiv","version":2}},"canonical_sha256":"54a77cb9c8a0a3d404f2394195dbd1667d390256ded2f957d0b4ec4e7feb9d8d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"54a77cb9c8a0a3d404f2394195dbd1667d390256ded2f957d0b4ec4e7feb9d8d","first_computed_at":"2026-05-18T03:43:06.896982Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:43:06.896982Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"dDu8wWerqLKvWyC+kABYluY3Mw8ubt1OBW9mb0ULKuj52ZTDtrEjFmUvM+i2dBqFhgO/CvvDTkRmJ2178lUGBg==","signature_status":"signed_v1","signed_at":"2026-05-18T03:43:06.897732Z","signed_message":"canonical_sha256_bytes"},"source_id":"1208.5985","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:10ce68df775124f94accb9d32fdc80b440369b3dbcb1654411876f8038f38fce","sha256:6701ccdb0be87fe3f4a8cbdff9aa3d54db46d7f52ed484476f924ec48ab579c6"],"state_sha256":"669d66cd43a4bf14c6179a6202216e28ae17471888edb669f0a44d1c06da1103"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"yqIsd2xMfx5rEPYmSbS+ktzZS1bOjNFUAB5cdTokj+NbHC5UxkvIrDb1FiqoBYHGeHeODR2d0cjExQb2A0AwAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-30T05:06:47.777102Z","bundle_sha256":"b2a48f784b8c14c6f8349ddb1dbda48b0ecf711d2b9602bba62518feb5a4b43a"}}