{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2000:UJSJUQKT2TMRRNESVMGPO5Y37B","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":"f38f94d2268d0f33e9a8eb83acb7b894eafe2195cd646f308495e3a38ecd831d","cross_cats_sorted":["cond-mat.stat-mech"],"license":"","primary_cat":"cond-mat.str-el","submitted_at":"2000-04-28T22:10:05Z","title_canon_sha256":"e4e0d4e57149557767dbb252e6433f59d09b014a3925e589453b786682802c8c"},"schema_version":"1.0","source":{"id":"cond-mat/0004497","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"cond-mat/0004497","created_at":"2026-07-04T14:17:49Z"},{"alias_kind":"arxiv_version","alias_value":"cond-mat/0004497v2","created_at":"2026-07-04T14:17:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.cond-mat/0004497","created_at":"2026-07-04T14:17:49Z"},{"alias_kind":"pith_short_12","alias_value":"UJSJUQKT2TMR","created_at":"2026-07-04T14:17:49Z"},{"alias_kind":"pith_short_16","alias_value":"UJSJUQKT2TMRRNES","created_at":"2026-07-04T14:17:49Z"},{"alias_kind":"pith_short_8","alias_value":"UJSJUQKT","created_at":"2026-07-04T14:17:49Z"}],"graph_snapshots":[{"event_id":"sha256:5eb6f233e7d725fa82798a54232f7858d7d8ca371462590f08f8c891da4496c9","target":"graph","created_at":"2026-07-04T14:17:49Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/cond-mat/0004497/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"A conduction electron (or hole) together with its self-induced polarisation in a polar semiconductor or an ionic crystal forms a quasi-particle, which is called a polaron. The polaron concept is of interest, not only because it describes the particular physical properties of charge carriers in polarizable solids but also because it constitutes an interesting field theoretical model of a fermion interacting with a scalar boson field. The early work on polarons was concerned with general theoretical formulations and approximations, which now constitute the standard polaron theory, and with exper","authors_text":"J. T. Devreese (Universiteit Antwerpen - UIA)","cross_cats":["cond-mat.stat-mech"],"headline":"","license":"","primary_cat":"cond-mat.str-el","submitted_at":"2000-04-28T22:10:05Z","title":"Polarons"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"cond-mat/0004497","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":"sha256:00584a635ccfdfe6a5c30fa15c3a56280f735059427585abe9cc8fdc1bae3d39","target":"record","created_at":"2026-07-04T14:17:49Z","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":"f38f94d2268d0f33e9a8eb83acb7b894eafe2195cd646f308495e3a38ecd831d","cross_cats_sorted":["cond-mat.stat-mech"],"license":"","primary_cat":"cond-mat.str-el","submitted_at":"2000-04-28T22:10:05Z","title_canon_sha256":"e4e0d4e57149557767dbb252e6433f59d09b014a3925e589453b786682802c8c"},"schema_version":"1.0","source":{"id":"cond-mat/0004497","kind":"arxiv","version":2}},"canonical_sha256":"a2649a4153d4d918b492ab0cf7771bf8490e2f8473b00d90aa568cb9d23aac69","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a2649a4153d4d918b492ab0cf7771bf8490e2f8473b00d90aa568cb9d23aac69","first_computed_at":"2026-07-04T14:17:49.619195Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T14:17:49.619195Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"bLdPoVkQPReO036+uMqY/jhfzhxFMI4Rob32oyrk/s1F5aq0Ux3T2iRXbLHH2HIj6RZ67XXwZYKg63g0T9+lBg==","signature_status":"signed_v1","signed_at":"2026-07-04T14:17:49.619641Z","signed_message":"canonical_sha256_bytes"},"source_id":"cond-mat/0004497","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:00584a635ccfdfe6a5c30fa15c3a56280f735059427585abe9cc8fdc1bae3d39","sha256:5eb6f233e7d725fa82798a54232f7858d7d8ca371462590f08f8c891da4496c9"],"state_sha256":"c2fafacb9d11322262045fa758d1ecfc0086227a7c00170529c5d01af3f7f387"}