{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:4KAC3L2SFFRO4KEQRHTGZG7UQO","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":"e0365e1f9aef78f560a2553303bd9ba9070d530ffa3d70b502c8bacbc856ece8","cross_cats_sorted":["cond-mat.stat-mech"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2019-03-12T19:53:24Z","title_canon_sha256":"83be3b28cfde0e527ee5caa2526c0e797f028f641b37b72b78c179e4b0b5bb5b"},"schema_version":"1.0","source":{"id":"1903.05180","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1903.05180","created_at":"2026-05-17T23:51:20Z"},{"alias_kind":"arxiv_version","alias_value":"1903.05180v1","created_at":"2026-05-17T23:51:20Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1903.05180","created_at":"2026-05-17T23:51:20Z"},{"alias_kind":"pith_short_12","alias_value":"4KAC3L2SFFRO","created_at":"2026-05-18T12:33:10Z"},{"alias_kind":"pith_short_16","alias_value":"4KAC3L2SFFRO4KEQ","created_at":"2026-05-18T12:33:10Z"},{"alias_kind":"pith_short_8","alias_value":"4KAC3L2S","created_at":"2026-05-18T12:33:10Z"}],"graph_snapshots":[{"event_id":"sha256:d1925b8f1e68eae67698930c3467a90020e2e2fdc5140caa8bb97e52065a5076","target":"graph","created_at":"2026-05-17T23:51:20Z","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":"The concept of a self-consistent field in the theory of superconductivity based on the diagram method of the time-dependent perturbation theory is presented. It is shown that the well-known Bardeen-Cooper-Schrieffer equation for the order parameter of superconductivity is already realized in a zero approximation.The form of interaction Hamiltonian uniquely determines a chain of interconnected Green's functions which are easily calculated in this approximation. On the basis of the presented method a proximity effect in a normal metal-superconductor structure is studied. It was obtained the ener","authors_text":"E.E. Zubov","cross_cats":["cond-mat.stat-mech"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2019-03-12T19:53:24Z","title":"Proximity effect and self-consistent field in a normal metal-superconductor structure"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1903.05180","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:ec8b151f6d4e5e8185bac4b3c498a154a27bbfe54308e7a47aef8976d64d2f29","target":"record","created_at":"2026-05-17T23:51:20Z","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":"e0365e1f9aef78f560a2553303bd9ba9070d530ffa3d70b502c8bacbc856ece8","cross_cats_sorted":["cond-mat.stat-mech"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2019-03-12T19:53:24Z","title_canon_sha256":"83be3b28cfde0e527ee5caa2526c0e797f028f641b37b72b78c179e4b0b5bb5b"},"schema_version":"1.0","source":{"id":"1903.05180","kind":"arxiv","version":1}},"canonical_sha256":"e2802daf522962ee289089e66c9bf4839d359f19cda69ad076650329cc46cb07","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e2802daf522962ee289089e66c9bf4839d359f19cda69ad076650329cc46cb07","first_computed_at":"2026-05-17T23:51:20.999761Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:51:20.999761Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"GiT5ux5Okx7qzeUAcB5wMtG6iehY5iOepvnipOsJ51aUVRsi/ZF28QdF/Vpbes9ueF/HbPEdlFA6/eLBPDtHBQ==","signature_status":"signed_v1","signed_at":"2026-05-17T23:51:21.000377Z","signed_message":"canonical_sha256_bytes"},"source_id":"1903.05180","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ec8b151f6d4e5e8185bac4b3c498a154a27bbfe54308e7a47aef8976d64d2f29","sha256:d1925b8f1e68eae67698930c3467a90020e2e2fdc5140caa8bb97e52065a5076"],"state_sha256":"0d55a42f761ed4c5065308ad1d5a9a3eac5b68a8e29716a70bfb24f92c8dfd59"}