{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:2SKIHRZ2FBQKLUMONJWHPDY7FQ","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":"4c86fca7ceca29ac014aa586d66b9e66e06d4aff231c8b96c20ec905e11f646b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2012-08-05T14:27:05Z","title_canon_sha256":"2d75af8d46d31aa6e234086d8858a74be4aa91291fd33e0ce5d0765309f2dc97"},"schema_version":"1.0","source":{"id":"1208.1015","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1208.1015","created_at":"2026-05-18T03:43:17Z"},{"alias_kind":"arxiv_version","alias_value":"1208.1015v1","created_at":"2026-05-18T03:43:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1208.1015","created_at":"2026-05-18T03:43:17Z"},{"alias_kind":"pith_short_12","alias_value":"2SKIHRZ2FBQK","created_at":"2026-05-18T12:26:50Z"},{"alias_kind":"pith_short_16","alias_value":"2SKIHRZ2FBQKLUMO","created_at":"2026-05-18T12:26:50Z"},{"alias_kind":"pith_short_8","alias_value":"2SKIHRZ2","created_at":"2026-05-18T12:26:50Z"}],"graph_snapshots":[{"event_id":"sha256:d632fbea0ce8c5d6b013dc6d78e8e3962b70f545a7b2eed037e1d9407b8708ee","target":"graph","created_at":"2026-05-18T03:43:17Z","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":"A minimal model of a quantum refrigerator (QR), i.e. a periodically phase-flipped two-level system permanently coupled to a finite-capacity bath (cold bath) and an infinite heat dump (hot bath), is introduced and used to investigate the cooling of the cold bath towards the absolute zero (T=0). Remarkably, the temperature scaling of the cold-bath cooling rate reveals that it does not vanish as T->0 for certain realistic quantized baths, e.g. phonons in strongly disordered media (fractons) or quantized spin-waves in ferromagnets (magnons). This result challenges Nernst's third-law formulation kn","authors_text":"David Gelbwaser-Klimovsky, Gershon Kurizki, Michal Kol\\'a\\v{r}, Robert Alicki","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2012-08-05T14:27:05Z","title":"Quantum bath refrigeration towards absolute zero: unattainability principle challenged"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1208.1015","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:f7c539501109a8590bb285be9180626500d4565d1261f86dc58e80fc6c96785b","target":"record","created_at":"2026-05-18T03:43:17Z","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":"4c86fca7ceca29ac014aa586d66b9e66e06d4aff231c8b96c20ec905e11f646b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2012-08-05T14:27:05Z","title_canon_sha256":"2d75af8d46d31aa6e234086d8858a74be4aa91291fd33e0ce5d0765309f2dc97"},"schema_version":"1.0","source":{"id":"1208.1015","kind":"arxiv","version":1}},"canonical_sha256":"d49483c73a2860a5d18e6a6c778f1f2c3a3ab60ed7adaa13c7254b5e2f16c9fc","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d49483c73a2860a5d18e6a6c778f1f2c3a3ab60ed7adaa13c7254b5e2f16c9fc","first_computed_at":"2026-05-18T03:43:17.898218Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:43:17.898218Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Xbs6+55wUIc0RQ0O4NcLRqEvgTF3F5tBIlQox4xLai4ibCHsNJ1G5u7T5xBZzlcpV2kFlZahSqq4/POLKIVBDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T03:43:17.898694Z","signed_message":"canonical_sha256_bytes"},"source_id":"1208.1015","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f7c539501109a8590bb285be9180626500d4565d1261f86dc58e80fc6c96785b","sha256:d632fbea0ce8c5d6b013dc6d78e8e3962b70f545a7b2eed037e1d9407b8708ee"],"state_sha256":"4dc3ae5329a9fba81b3a58039eeb5844e14025aa2e0c8a44fbb197d0b856b52a"}