{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:SCUGQANESBIDU7FUXTMMNQBF36","short_pith_number":"pith:SCUGQANE","canonical_record":{"source":{"id":"1405.0635","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2014-05-04T00:18:01Z","cross_cats_sorted":[],"title_canon_sha256":"7c27557ddc961c24cb31da16169e4ea0096acb2627a5a995aa26b462bc00ec6d","abstract_canon_sha256":"2d7771a4801d4dcd7586f8b615badcdf2a795bd8d628c81c6217137540a67bf2"},"schema_version":"1.0"},"canonical_sha256":"90a86801a490503a7cb4bcd8c6c025dfb9c57472df9dba564117a651856682b3","source":{"kind":"arxiv","id":"1405.0635","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1405.0635","created_at":"2026-05-18T02:52:41Z"},{"alias_kind":"arxiv_version","alias_value":"1405.0635v1","created_at":"2026-05-18T02:52:41Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1405.0635","created_at":"2026-05-18T02:52:41Z"},{"alias_kind":"pith_short_12","alias_value":"SCUGQANESBID","created_at":"2026-05-18T12:28:49Z"},{"alias_kind":"pith_short_16","alias_value":"SCUGQANESBIDU7FU","created_at":"2026-05-18T12:28:49Z"},{"alias_kind":"pith_short_8","alias_value":"SCUGQANE","created_at":"2026-05-18T12:28:49Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:SCUGQANESBIDU7FUXTMMNQBF36","target":"record","payload":{"canonical_record":{"source":{"id":"1405.0635","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2014-05-04T00:18:01Z","cross_cats_sorted":[],"title_canon_sha256":"7c27557ddc961c24cb31da16169e4ea0096acb2627a5a995aa26b462bc00ec6d","abstract_canon_sha256":"2d7771a4801d4dcd7586f8b615badcdf2a795bd8d628c81c6217137540a67bf2"},"schema_version":"1.0"},"canonical_sha256":"90a86801a490503a7cb4bcd8c6c025dfb9c57472df9dba564117a651856682b3","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:52:41.026370Z","signature_b64":"Ysvf8X75ByLna3hwJQ8iHY3SAbZ+DuoguEmW2hkCe90AZ6qETXiJuCmT1qqhKvG6B2z3AdkaAOBvR1IqiWl1AQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"90a86801a490503a7cb4bcd8c6c025dfb9c57472df9dba564117a651856682b3","last_reissued_at":"2026-05-18T02:52:41.025896Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:52:41.025896Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1405.0635","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":"2026-05-18T02:52:41Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3EWs1FdC0Fo5F7HFspHhbXhYgvYasxK9jCExFznbtTDvodxwec5pYvcXHRNpJQBCMcNe5LwTK+JiMvVyeEEbBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T18:12:21.520615Z"},"content_sha256":"4c81feb492e52acccef9870cd5d2bf88ff21eb6f50804489ce525253693aec46","schema_version":"1.0","event_id":"sha256:4c81feb492e52acccef9870cd5d2bf88ff21eb6f50804489ce525253693aec46"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:SCUGQANESBIDU7FUXTMMNQBF36","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Decoherence of a quantum system coupled to an XY spin chain: Role of the initial state of the spin chain","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Ping Zhang, Shu-Shen Li, Zi-Gang Yuan","submitted_at":"2014-05-04T00:18:01Z","abstract_excerpt":"We study the decoherence of a coupled quantum system consisting of a central spin and its correlated environment described by a general $XY$ spin-chain model. We make it clear that the evolution of the coherence factor sensitively depends on the initial states of the environment spin-chain. Specially, the dynamical evolution of the coherence factor of the central spin is numerically and analytically investigated in both weak and strong coupling cases for different initial states including thermal equilibrium state. In both weak and strong coupling regimes, the decay of the coherence factor can"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1405.0635","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":"2026-05-18T02:52:41Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"W3P1U+dZ/7GDBbhsHiDq/IamHaKRNBgggbEk87SPdRwAsEE8h5OUFlUVSc8gyqsDDAA+yzj1GC2CPqejdxO2Bw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T18:12:21.521246Z"},"content_sha256":"ecdc0bcaae40f3e43094b77f132c3a9b957571ec9f9406dfe6655212401b65f9","schema_version":"1.0","event_id":"sha256:ecdc0bcaae40f3e43094b77f132c3a9b957571ec9f9406dfe6655212401b65f9"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/SCUGQANESBIDU7FUXTMMNQBF36/bundle.json","state_url":"https://pith.science/pith/SCUGQANESBIDU7FUXTMMNQBF36/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/SCUGQANESBIDU7FUXTMMNQBF36/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":"2026-05-31T18:12:21Z","links":{"resolver":"https://pith.science/pith/SCUGQANESBIDU7FUXTMMNQBF36","bundle":"https://pith.science/pith/SCUGQANESBIDU7FUXTMMNQBF36/bundle.json","state":"https://pith.science/pith/SCUGQANESBIDU7FUXTMMNQBF36/state.json","well_known_bundle":"https://pith.science/.well-known/pith/SCUGQANESBIDU7FUXTMMNQBF36/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:SCUGQANESBIDU7FUXTMMNQBF36","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":"2d7771a4801d4dcd7586f8b615badcdf2a795bd8d628c81c6217137540a67bf2","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2014-05-04T00:18:01Z","title_canon_sha256":"7c27557ddc961c24cb31da16169e4ea0096acb2627a5a995aa26b462bc00ec6d"},"schema_version":"1.0","source":{"id":"1405.0635","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1405.0635","created_at":"2026-05-18T02:52:41Z"},{"alias_kind":"arxiv_version","alias_value":"1405.0635v1","created_at":"2026-05-18T02:52:41Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1405.0635","created_at":"2026-05-18T02:52:41Z"},{"alias_kind":"pith_short_12","alias_value":"SCUGQANESBID","created_at":"2026-05-18T12:28:49Z"},{"alias_kind":"pith_short_16","alias_value":"SCUGQANESBIDU7FU","created_at":"2026-05-18T12:28:49Z"},{"alias_kind":"pith_short_8","alias_value":"SCUGQANE","created_at":"2026-05-18T12:28:49Z"}],"graph_snapshots":[{"event_id":"sha256:ecdc0bcaae40f3e43094b77f132c3a9b957571ec9f9406dfe6655212401b65f9","target":"graph","created_at":"2026-05-18T02:52:41Z","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 study the decoherence of a coupled quantum system consisting of a central spin and its correlated environment described by a general $XY$ spin-chain model. We make it clear that the evolution of the coherence factor sensitively depends on the initial states of the environment spin-chain. Specially, the dynamical evolution of the coherence factor of the central spin is numerically and analytically investigated in both weak and strong coupling cases for different initial states including thermal equilibrium state. In both weak and strong coupling regimes, the decay of the coherence factor can","authors_text":"Ping Zhang, Shu-Shen Li, Zi-Gang Yuan","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2014-05-04T00:18:01Z","title":"Decoherence of a quantum system coupled to an XY spin chain: Role of the initial state of the spin chain"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1405.0635","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":"sha256:4c81feb492e52acccef9870cd5d2bf88ff21eb6f50804489ce525253693aec46","target":"record","created_at":"2026-05-18T02:52:41Z","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":"2d7771a4801d4dcd7586f8b615badcdf2a795bd8d628c81c6217137540a67bf2","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2014-05-04T00:18:01Z","title_canon_sha256":"7c27557ddc961c24cb31da16169e4ea0096acb2627a5a995aa26b462bc00ec6d"},"schema_version":"1.0","source":{"id":"1405.0635","kind":"arxiv","version":1}},"canonical_sha256":"90a86801a490503a7cb4bcd8c6c025dfb9c57472df9dba564117a651856682b3","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"90a86801a490503a7cb4bcd8c6c025dfb9c57472df9dba564117a651856682b3","first_computed_at":"2026-05-18T02:52:41.025896Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:52:41.025896Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Ysvf8X75ByLna3hwJQ8iHY3SAbZ+DuoguEmW2hkCe90AZ6qETXiJuCmT1qqhKvG6B2z3AdkaAOBvR1IqiWl1AQ==","signature_status":"signed_v1","signed_at":"2026-05-18T02:52:41.026370Z","signed_message":"canonical_sha256_bytes"},"source_id":"1405.0635","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4c81feb492e52acccef9870cd5d2bf88ff21eb6f50804489ce525253693aec46","sha256:ecdc0bcaae40f3e43094b77f132c3a9b957571ec9f9406dfe6655212401b65f9"],"state_sha256":"c9a396f9c3f9d5e877f04126294341ab2470604c09ff7c53564f8d5c39bd56fe"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"YzW7jBIoibklr6SEGhweMqN1dUNLTXBzOZHsI3pKcEc3H/Kny9XNfMSW4kemKnR8YB7ZBXUTpAI+2yJwpckIAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-31T18:12:21.525515Z","bundle_sha256":"b75afef36aded1e75c641d801b31c9e13cbbd4426d2ad2bd2c51945657fb0cfe"}}