{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:RRDK5Q5HFWQ5BZ6YUI44UUGSLU","short_pith_number":"pith:RRDK5Q5H","canonical_record":{"source":{"id":"1807.09130","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2018-07-23T07:37:41Z","cross_cats_sorted":["cond-mat.mtrl-sci"],"title_canon_sha256":"6423d52f4aededa1f2c0a87524090b644c061237c0d590c5052cf4537ffeba9e","abstract_canon_sha256":"2323b049a4cfb190a02a4221f81491008c61f7465fd9e4a49eb33fc2bafbca2c"},"schema_version":"1.0"},"canonical_sha256":"8c46aec3a72da1d0e7d8a239ca50d25d119e1415c2d807f48f350ada70648752","source":{"kind":"arxiv","id":"1807.09130","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1807.09130","created_at":"2026-05-18T00:07:05Z"},{"alias_kind":"arxiv_version","alias_value":"1807.09130v2","created_at":"2026-05-18T00:07:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1807.09130","created_at":"2026-05-18T00:07:05Z"},{"alias_kind":"pith_short_12","alias_value":"RRDK5Q5HFWQ5","created_at":"2026-05-18T12:32:50Z"},{"alias_kind":"pith_short_16","alias_value":"RRDK5Q5HFWQ5BZ6Y","created_at":"2026-05-18T12:32:50Z"},{"alias_kind":"pith_short_8","alias_value":"RRDK5Q5H","created_at":"2026-05-18T12:32:50Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:RRDK5Q5HFWQ5BZ6YUI44UUGSLU","target":"record","payload":{"canonical_record":{"source":{"id":"1807.09130","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2018-07-23T07:37:41Z","cross_cats_sorted":["cond-mat.mtrl-sci"],"title_canon_sha256":"6423d52f4aededa1f2c0a87524090b644c061237c0d590c5052cf4537ffeba9e","abstract_canon_sha256":"2323b049a4cfb190a02a4221f81491008c61f7465fd9e4a49eb33fc2bafbca2c"},"schema_version":"1.0"},"canonical_sha256":"8c46aec3a72da1d0e7d8a239ca50d25d119e1415c2d807f48f350ada70648752","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:07:05.881630Z","signature_b64":"tXfCEXx44pMP6uaPSnQSw9kADfT7UH6llxxmV8alaee3JLBDC3zNEMxMSt/hlU5qZMAc4b6UYooUOVzg7FNaBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"8c46aec3a72da1d0e7d8a239ca50d25d119e1415c2d807f48f350ada70648752","last_reissued_at":"2026-05-18T00:07:05.880904Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:07:05.880904Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1807.09130","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:07:05Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"FgJUOyZJriXNcvQDo2x8PGwhuBnvkIad40Z2fZVEhR+Mxz8yRs+U7C08JHUGAcqkNQlwH1rD8CVfD7lAceOqAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T13:02:14.779879Z"},"content_sha256":"ebea933969c8483c5d3ce0dc88bcb16f895d5abdf3b785353f7e9685dee6ca46","schema_version":"1.0","event_id":"sha256:ebea933969c8483c5d3ce0dc88bcb16f895d5abdf3b785353f7e9685dee6ca46"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:RRDK5Q5HFWQ5BZ6YUI44UUGSLU","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Impact of chemical potential on the reflectance of graphene in the infrared and microwave domains","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mtrl-sci"],"primary_cat":"cond-mat.mes-hall","authors_text":"G.L. Klimchitskaya, V. M. Mostepanenko, V. M. Petrov","submitted_at":"2018-07-23T07:37:41Z","abstract_excerpt":"The reflectance of graphene is investigated in the framework of the Dirac model with account of its realistic properties, such as nonzero chemical potential and band gap, at any temperature. For this purpose, the exact reflection coefficients of the electromagnetic waves on a graphene sheet expressed via the polarization tensor and ultimately via the electrical conductivity of graphene have been used. The reflectance of graphene is computed as a function of frequency and chemical potential at different temperatures and values of the band-gap parameter. The minimum values of the reflectance are"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1807.09130","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:07:05Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"u+0KBUiAACZlCRloIkwatSn2DkOhauGDYM/igy8CDT+32RzsBQYcI6eVVAz5zWEpN2UXBLVc9He46z6Rf5JgCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T13:02:14.780587Z"},"content_sha256":"0447facdd08ac474d965ed3a7ec8e0f7b855db0b203f6566d50579fbc1668e7e","schema_version":"1.0","event_id":"sha256:0447facdd08ac474d965ed3a7ec8e0f7b855db0b203f6566d50579fbc1668e7e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/RRDK5Q5HFWQ5BZ6YUI44UUGSLU/bundle.json","state_url":"https://pith.science/pith/RRDK5Q5HFWQ5BZ6YUI44UUGSLU/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/RRDK5Q5HFWQ5BZ6YUI44UUGSLU/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-05-26T13:02:14Z","links":{"resolver":"https://pith.science/pith/RRDK5Q5HFWQ5BZ6YUI44UUGSLU","bundle":"https://pith.science/pith/RRDK5Q5HFWQ5BZ6YUI44UUGSLU/bundle.json","state":"https://pith.science/pith/RRDK5Q5HFWQ5BZ6YUI44UUGSLU/state.json","well_known_bundle":"https://pith.science/.well-known/pith/RRDK5Q5HFWQ5BZ6YUI44UUGSLU/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:RRDK5Q5HFWQ5BZ6YUI44UUGSLU","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":"2323b049a4cfb190a02a4221f81491008c61f7465fd9e4a49eb33fc2bafbca2c","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2018-07-23T07:37:41Z","title_canon_sha256":"6423d52f4aededa1f2c0a87524090b644c061237c0d590c5052cf4537ffeba9e"},"schema_version":"1.0","source":{"id":"1807.09130","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1807.09130","created_at":"2026-05-18T00:07:05Z"},{"alias_kind":"arxiv_version","alias_value":"1807.09130v2","created_at":"2026-05-18T00:07:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1807.09130","created_at":"2026-05-18T00:07:05Z"},{"alias_kind":"pith_short_12","alias_value":"RRDK5Q5HFWQ5","created_at":"2026-05-18T12:32:50Z"},{"alias_kind":"pith_short_16","alias_value":"RRDK5Q5HFWQ5BZ6Y","created_at":"2026-05-18T12:32:50Z"},{"alias_kind":"pith_short_8","alias_value":"RRDK5Q5H","created_at":"2026-05-18T12:32:50Z"}],"graph_snapshots":[{"event_id":"sha256:0447facdd08ac474d965ed3a7ec8e0f7b855db0b203f6566d50579fbc1668e7e","target":"graph","created_at":"2026-05-18T00:07:05Z","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 reflectance of graphene is investigated in the framework of the Dirac model with account of its realistic properties, such as nonzero chemical potential and band gap, at any temperature. For this purpose, the exact reflection coefficients of the electromagnetic waves on a graphene sheet expressed via the polarization tensor and ultimately via the electrical conductivity of graphene have been used. The reflectance of graphene is computed as a function of frequency and chemical potential at different temperatures and values of the band-gap parameter. The minimum values of the reflectance are","authors_text":"G.L. Klimchitskaya, V. M. Mostepanenko, V. M. Petrov","cross_cats":["cond-mat.mtrl-sci"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2018-07-23T07:37:41Z","title":"Impact of chemical potential on the reflectance of graphene in the infrared and microwave domains"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1807.09130","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:ebea933969c8483c5d3ce0dc88bcb16f895d5abdf3b785353f7e9685dee6ca46","target":"record","created_at":"2026-05-18T00:07:05Z","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":"2323b049a4cfb190a02a4221f81491008c61f7465fd9e4a49eb33fc2bafbca2c","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2018-07-23T07:37:41Z","title_canon_sha256":"6423d52f4aededa1f2c0a87524090b644c061237c0d590c5052cf4537ffeba9e"},"schema_version":"1.0","source":{"id":"1807.09130","kind":"arxiv","version":2}},"canonical_sha256":"8c46aec3a72da1d0e7d8a239ca50d25d119e1415c2d807f48f350ada70648752","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"8c46aec3a72da1d0e7d8a239ca50d25d119e1415c2d807f48f350ada70648752","first_computed_at":"2026-05-18T00:07:05.880904Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:07:05.880904Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"tXfCEXx44pMP6uaPSnQSw9kADfT7UH6llxxmV8alaee3JLBDC3zNEMxMSt/hlU5qZMAc4b6UYooUOVzg7FNaBg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:07:05.881630Z","signed_message":"canonical_sha256_bytes"},"source_id":"1807.09130","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ebea933969c8483c5d3ce0dc88bcb16f895d5abdf3b785353f7e9685dee6ca46","sha256:0447facdd08ac474d965ed3a7ec8e0f7b855db0b203f6566d50579fbc1668e7e"],"state_sha256":"88a49fb6e6a67911cddc6248cbd14e6146567624353790bef77a3d9812969544"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"wGOy/H2s8pNxiPMXgz+ytmaILw7JIZYMn7ZXYcVSciKvxQhTqtofY3FvZ8TspbXNVzVOK3s4YsWqi953OqooCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T13:02:14.784204Z","bundle_sha256":"27c4d35b3052c5a1e1791c601e90813cb86f9f5c9945ad071a2071fd31b75da3"}}