{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:FFQM7BXHKC3ATZPH3ERJZR5766","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":"7086dbfd89287129109e78737ec6221431fe28d9d39888880b3affc999eea4a8","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2014-01-13T14:21:38Z","title_canon_sha256":"af117f4c02afb13c2ff794c5a94ee150878347ffabd95ebbe99b014944e3f485"},"schema_version":"1.0","source":{"id":"1401.2843","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1401.2843","created_at":"2026-05-18T03:02:31Z"},{"alias_kind":"arxiv_version","alias_value":"1401.2843v1","created_at":"2026-05-18T03:02:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1401.2843","created_at":"2026-05-18T03:02:31Z"},{"alias_kind":"pith_short_12","alias_value":"FFQM7BXHKC3A","created_at":"2026-05-18T12:28:28Z"},{"alias_kind":"pith_short_16","alias_value":"FFQM7BXHKC3ATZPH","created_at":"2026-05-18T12:28:28Z"},{"alias_kind":"pith_short_8","alias_value":"FFQM7BXH","created_at":"2026-05-18T12:28:28Z"}],"graph_snapshots":[{"event_id":"sha256:8959704685fac8d737cde45bc8f280e8faed72fe04e7020f09d99c7f155e0994","target":"graph","created_at":"2026-05-18T03:02:31Z","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 propose a theory to explain the strain dependence of the critical properties in A15 superconductors. Starting from the strong-coupling formula for the critical temperature, and assuming that the strain sensitivity stems mostly from the electron-phonon alpha^2F function, we link the strain dependence of the critical properties to a widening of alpha^2F. This widening is attributed to the nonlinear generation of phonons, which takes place in the anharmonic deformation potential induced by the strain. Based on the theory of sum- and difference-frequency wave generation in nonlinear media, we o","authors_text":"Bernardo Bordini, Christophe Berthod, Davide Filippo Valentinis, Lucio Rossi","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2014-01-13T14:21:38Z","title":"A theory of the strain-dependent critical field in Nb3Sn, based on anharmonic phonon generation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1401.2843","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":"sha256:0af025c033a11d2873815a0b9cdeebcf4d35923afd8f23b43b1d0a0c5e8b6cbf","target":"record","created_at":"2026-05-18T03:02:31Z","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":"7086dbfd89287129109e78737ec6221431fe28d9d39888880b3affc999eea4a8","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2014-01-13T14:21:38Z","title_canon_sha256":"af117f4c02afb13c2ff794c5a94ee150878347ffabd95ebbe99b014944e3f485"},"schema_version":"1.0","source":{"id":"1401.2843","kind":"arxiv","version":1}},"canonical_sha256":"2960cf86e750b609e5e7d9229cc7bff7a1e2829c7ac7d397f3f6f8b2bde9ed7b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2960cf86e750b609e5e7d9229cc7bff7a1e2829c7ac7d397f3f6f8b2bde9ed7b","first_computed_at":"2026-05-18T03:02:31.780459Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:02:31.780459Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"KhVI38uSbo8BaCcH3toXO0709tzlKbzVQ6se1ydcGtcKV0KHbfWWYpM0v8c92gk17cgEYDdUQkyxjfVUcqQ3Dw==","signature_status":"signed_v1","signed_at":"2026-05-18T03:02:31.781173Z","signed_message":"canonical_sha256_bytes"},"source_id":"1401.2843","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0af025c033a11d2873815a0b9cdeebcf4d35923afd8f23b43b1d0a0c5e8b6cbf","sha256:8959704685fac8d737cde45bc8f280e8faed72fe04e7020f09d99c7f155e0994"],"state_sha256":"873b16af7e9d58e306663bf0e656d9087b8b88a3840a377fe3d411368df4192d"}