{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:NSENBQHPGLCACY2WXFT4FVA5VH","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":"1148ba7fbe38d80a149a786f74dc80d242700abe1d7326d2c0416dd6b2ca533a","cross_cats_sorted":["cond-mat.str-el"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2011-02-28T07:53:37Z","title_canon_sha256":"e99480eadfee64cdf8786d0444ddcab2ff0679f264e8f68aa956b17b1d15695f"},"schema_version":"1.0","source":{"id":"1102.5616","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1102.5616","created_at":"2026-05-18T02:03:04Z"},{"alias_kind":"arxiv_version","alias_value":"1102.5616v2","created_at":"2026-05-18T02:03:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1102.5616","created_at":"2026-05-18T02:03:04Z"},{"alias_kind":"pith_short_12","alias_value":"NSENBQHPGLCA","created_at":"2026-05-18T12:26:37Z"},{"alias_kind":"pith_short_16","alias_value":"NSENBQHPGLCACY2W","created_at":"2026-05-18T12:26:37Z"},{"alias_kind":"pith_short_8","alias_value":"NSENBQHP","created_at":"2026-05-18T12:26:37Z"}],"graph_snapshots":[{"event_id":"sha256:9877bebabb44c42b08e004c463c361a459500b997c9903a9c7cb9154c2879910","target":"graph","created_at":"2026-05-18T02:03:04Z","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":"Using time-domain Terahertz spectroscopy we performed direct studies of the photoinduced suppression and recovery of the superconducting gap in a conventional BCS superconductor NbN. Both processes are found to be strongly temperature and excitation density dependent. The analysis of the data with the established phenomenological Rothwarf-Taylor model enabled us to determine the bare quasiparticle recombination rate, the Cooper pair-breaking rate and the electron-phonon coupling constant, \\lambda = 1.1 +/- 0.1, which is in excellent agreement with theoretical estimates.","authors_text":"G. N. Gol'tsman, J. Demsar, M. Beck, M. Klammer, P. Leiderer, S. Lang, V.V. Kabanov","cross_cats":["cond-mat.str-el"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2011-02-28T07:53:37Z","title":"Energy-gap dynamics of superconducting NbN thin films studied by time-resolved terahertz spectroscopy"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1102.5616","kind":"arxiv","version":2},"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:d7558e5c7fa48e7990c0a790616476810bf16cc86b143c82cd2d01ddbf8009a0","target":"record","created_at":"2026-05-18T02:03:04Z","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":"1148ba7fbe38d80a149a786f74dc80d242700abe1d7326d2c0416dd6b2ca533a","cross_cats_sorted":["cond-mat.str-el"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2011-02-28T07:53:37Z","title_canon_sha256":"e99480eadfee64cdf8786d0444ddcab2ff0679f264e8f68aa956b17b1d15695f"},"schema_version":"1.0","source":{"id":"1102.5616","kind":"arxiv","version":2}},"canonical_sha256":"6c88d0c0ef32c4016356b967c2d41da9feb1d98817fc9e5be6cf91fec61597c6","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6c88d0c0ef32c4016356b967c2d41da9feb1d98817fc9e5be6cf91fec61597c6","first_computed_at":"2026-05-18T02:03:04.081931Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:03:04.081931Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"2qmt4UsmbeFLO2hAIiwCa3ikCC+I4voikXJ472Ex1+iOaMUMclSfEOcwW2kVnESHvCctVOEy7G6QAPY9ck+8Cg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:03:04.082666Z","signed_message":"canonical_sha256_bytes"},"source_id":"1102.5616","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d7558e5c7fa48e7990c0a790616476810bf16cc86b143c82cd2d01ddbf8009a0","sha256:9877bebabb44c42b08e004c463c361a459500b997c9903a9c7cb9154c2879910"],"state_sha256":"9d23cac593fca82dbeca7b6668ee87b3ad150f7d66fe76c80ecc8ba0b97cb6e9"}