{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2008:PMGT4GLBERT2RRQXPQ4VJW2CIB","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":"38c9838dc6f5048ea0e3327d987dd67ae77b490fa6e2cf0277f2898ff97f80e5","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2008-06-10T10:25:34Z","title_canon_sha256":"01d96a3af9e601b48156192e899336458181ac7998b79b3f02e33362ed00c72b"},"schema_version":"1.0","source":{"id":"0806.1617","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0806.1617","created_at":"2026-05-18T03:35:52Z"},{"alias_kind":"arxiv_version","alias_value":"0806.1617v1","created_at":"2026-05-18T03:35:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0806.1617","created_at":"2026-05-18T03:35:52Z"},{"alias_kind":"pith_short_12","alias_value":"PMGT4GLBERT2","created_at":"2026-05-18T12:25:57Z"},{"alias_kind":"pith_short_16","alias_value":"PMGT4GLBERT2RRQX","created_at":"2026-05-18T12:25:57Z"},{"alias_kind":"pith_short_8","alias_value":"PMGT4GLB","created_at":"2026-05-18T12:25:57Z"}],"graph_snapshots":[{"event_id":"sha256:1ba6eec1fbbccf07e0de8e7ad09949c8c0b1ae55456a8412d496d48a9eefad2d","target":"graph","created_at":"2026-05-18T03:35:52Z","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 report a detailed study of UGe$_{2}$ single crystals using infrared reflectivity and spectroscopic ellipsometry. The optical conductivity suggests the presence of a low frequency interband transition and a narrow free-carrier response with strong frequency dependence of the scattering rate and effective mass. We observe sharp changes in the low frequency mass and scattering rate below the upper ferromagnetic transition $T_C = 53 K$. The characteristic changes are exhibited most strongly at an energy scale of around 12 meV (100 cm$^{-1}$). They recover their unrenormalized value above $T_C$ ","authors_text":"A. Huxley, D. van der Marel, N. P. Armitage, R. Tediosi, S. S. Saxena, V. Guritanu","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2008-06-10T10:25:34Z","title":"Optical spectra of the heavy fermion uniaxial ferromagnet UGe$_2$"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0806.1617","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":"sha256:26b891d6d40e03a1f68a4118688bcb4ec893ea77ebff7573431266a6365d60e9","target":"record","created_at":"2026-05-18T03:35:52Z","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":"38c9838dc6f5048ea0e3327d987dd67ae77b490fa6e2cf0277f2898ff97f80e5","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2008-06-10T10:25:34Z","title_canon_sha256":"01d96a3af9e601b48156192e899336458181ac7998b79b3f02e33362ed00c72b"},"schema_version":"1.0","source":{"id":"0806.1617","kind":"arxiv","version":1}},"canonical_sha256":"7b0d3e19612467a8c6177c3954db42404c481a0b0cb785a3d0210f45dbc7d76e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7b0d3e19612467a8c6177c3954db42404c481a0b0cb785a3d0210f45dbc7d76e","first_computed_at":"2026-05-18T03:35:52.235833Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:35:52.235833Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"lnFVos1m/57vKwdMCgDqJKVU0pq3oLRJtv44DZBXZ0LueJl584eAiNyRBoFwVmKgIYo/BrDoILPT0vUMHmlmCg==","signature_status":"signed_v1","signed_at":"2026-05-18T03:35:52.236768Z","signed_message":"canonical_sha256_bytes"},"source_id":"0806.1617","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:26b891d6d40e03a1f68a4118688bcb4ec893ea77ebff7573431266a6365d60e9","sha256:1ba6eec1fbbccf07e0de8e7ad09949c8c0b1ae55456a8412d496d48a9eefad2d"],"state_sha256":"9d0cda5c77ed539420b32e32f9bfae33ef91cc4c4dec5faddfb33b557bb4e0da"}