{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:DDDDCYJP5O3IZ2U7APD2E64ODV","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":"bf87d76ceda4081c80eae01c581e47ef9bcc9b1f2d6f93dc291102b397f06d8c","cross_cats_sorted":["cond-mat.stat-mech"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2012-12-26T08:30:32Z","title_canon_sha256":"c1ddb2062c5e200368517a8d1e65f2ee89b7dae637f5be1ddd76717927b5b65a"},"schema_version":"1.0","source":{"id":"1212.6135","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1212.6135","created_at":"2026-05-18T03:37:42Z"},{"alias_kind":"arxiv_version","alias_value":"1212.6135v1","created_at":"2026-05-18T03:37:42Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1212.6135","created_at":"2026-05-18T03:37:42Z"},{"alias_kind":"pith_short_12","alias_value":"DDDDCYJP5O3I","created_at":"2026-05-18T12:27:01Z"},{"alias_kind":"pith_short_16","alias_value":"DDDDCYJP5O3IZ2U7","created_at":"2026-05-18T12:27:01Z"},{"alias_kind":"pith_short_8","alias_value":"DDDDCYJP","created_at":"2026-05-18T12:27:01Z"}],"graph_snapshots":[{"event_id":"sha256:9d67e6620af18c24c3fe54074ba07a383dfea23afec9b0ff891278f838b7a42c","target":"graph","created_at":"2026-05-18T03:37:42Z","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 present analytical results for the time-dependent information entropy in exactly solvable two-state (qubit) models. The first model describes dephasing (decoherence) in a qubit coupled to a bath of harmonic oscillators. The entropy production for this model in the regimes of \"complete\" and \"incomplete\" decoherence is discussed. As another example, we consider the damped Jaynes-Cummings model describing a spontaneous decay of a two-level system into the field vacuum. It is shown that, for all strengths of coupling, the open system passes through the mixed state with the maximum information e","authors_text":"G. R\\\"opke, V. G. Morozov","cross_cats":["cond-mat.stat-mech"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2012-12-26T08:30:32Z","title":"Entropy production in open quantum systems: exactly solvable qubit models"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1212.6135","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":"sha256:3eb4630c9689a07e1d69ce9d6ea345004f193292d02119c738317d6589b4fd62","target":"record","created_at":"2026-05-18T03:37:42Z","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":"bf87d76ceda4081c80eae01c581e47ef9bcc9b1f2d6f93dc291102b397f06d8c","cross_cats_sorted":["cond-mat.stat-mech"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2012-12-26T08:30:32Z","title_canon_sha256":"c1ddb2062c5e200368517a8d1e65f2ee89b7dae637f5be1ddd76717927b5b65a"},"schema_version":"1.0","source":{"id":"1212.6135","kind":"arxiv","version":1}},"canonical_sha256":"18c631612febb68cea9f03c7a27b8e1d56ae14ab602ff086f859e441aa319446","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"18c631612febb68cea9f03c7a27b8e1d56ae14ab602ff086f859e441aa319446","first_computed_at":"2026-05-18T03:37:42.670658Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:37:42.670658Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"48oosur3xyNTaZkTCrjwIieTEi7PCLszjSnBpaYuozCovzbJV8SJMuLAYwRrTJJ4NldJKt+pYwMIWspWI1fXDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T03:37:42.671207Z","signed_message":"canonical_sha256_bytes"},"source_id":"1212.6135","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3eb4630c9689a07e1d69ce9d6ea345004f193292d02119c738317d6589b4fd62","sha256:9d67e6620af18c24c3fe54074ba07a383dfea23afec9b0ff891278f838b7a42c"],"state_sha256":"6dc701afb8aca9221cebe34421c8461beea0293d717cbec285beb297c226a162"}