{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:B4BBOOCP625YR3M6RTW6Z73T5A","short_pith_number":"pith:B4BBOOCP","canonical_record":{"source":{"id":"1109.4504","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2011-09-21T11:21:28Z","cross_cats_sorted":[],"title_canon_sha256":"0e621e4fcec78027ec99f8337250336281a3b2e656c38d63e767f5a5e54f5b3f","abstract_canon_sha256":"57c47c6da9cc2d1397442def78f6b284976b689acbd25a366d8368a43ae7f9b9"},"schema_version":"1.0"},"canonical_sha256":"0f0217384ff6bb88ed9e8cedecff73e8332372ce1bd2b830cbe302e56bc00c38","source":{"kind":"arxiv","id":"1109.4504","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1109.4504","created_at":"2026-05-18T04:08:05Z"},{"alias_kind":"arxiv_version","alias_value":"1109.4504v2","created_at":"2026-05-18T04:08:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1109.4504","created_at":"2026-05-18T04:08:05Z"},{"alias_kind":"pith_short_12","alias_value":"B4BBOOCP625Y","created_at":"2026-05-18T12:26:24Z"},{"alias_kind":"pith_short_16","alias_value":"B4BBOOCP625YR3M6","created_at":"2026-05-18T12:26:24Z"},{"alias_kind":"pith_short_8","alias_value":"B4BBOOCP","created_at":"2026-05-18T12:26:24Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:B4BBOOCP625YR3M6RTW6Z73T5A","target":"record","payload":{"canonical_record":{"source":{"id":"1109.4504","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2011-09-21T11:21:28Z","cross_cats_sorted":[],"title_canon_sha256":"0e621e4fcec78027ec99f8337250336281a3b2e656c38d63e767f5a5e54f5b3f","abstract_canon_sha256":"57c47c6da9cc2d1397442def78f6b284976b689acbd25a366d8368a43ae7f9b9"},"schema_version":"1.0"},"canonical_sha256":"0f0217384ff6bb88ed9e8cedecff73e8332372ce1bd2b830cbe302e56bc00c38","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:08:05.010390Z","signature_b64":"c6pZ7KVsF9ZPyBX3gAPI6dbOfoDgl+bAVSW2PzVZXcG+vejonaekfMjsiP6i2KBN34zmUl1n0vzEIzbeTxwXCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"0f0217384ff6bb88ed9e8cedecff73e8332372ce1bd2b830cbe302e56bc00c38","last_reissued_at":"2026-05-18T04:08:05.009938Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:08:05.009938Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1109.4504","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":"2026-05-18T04:08:05Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6S+N/TiPmNsqv70j1wvkAMmOkrJjcatDyzo0dLbzxuAtdRA9XqCvu7GxWSgg0OZeyPgir8oGJ/2/IY3+RDgDDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-20T20:08:51.122706Z"},"content_sha256":"9fc87eac7f256bb5d91071fc726de84a9f8ebac72063c7dc6a70f3fe53bf196d","schema_version":"1.0","event_id":"sha256:9fc87eac7f256bb5d91071fc726de84a9f8ebac72063c7dc6a70f3fe53bf196d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:B4BBOOCP625YR3M6RTW6Z73T5A","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Unraveling of free carrier absorption for terahertz radiation in heterostructures","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mes-hall","authors_text":"Andreas Wacker, Emmanuel Dupont, Francesca Carosella, Gerald Bastard, Robson Ferreira","submitted_at":"2011-09-21T11:21:28Z","abstract_excerpt":"The relation between free carrier absorption and intersubband transitions in semiconductor heterostructures is resolved by comparing a sequence of structures. Our numerical and analytical results show how free carrier absorption evolves from the intersubband transitions in the limit of an infinite number of wells with vanishing barrier width. It is explicitly shown that the integral of the absorption over frequency matches the value obtained by the f-sum rule. This shows that a proper treatment of intersubband transitions is fully sufficient to simulate the entire electronic absorption in hete"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1109.4504","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":"2026-05-18T04:08:05Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Vfr6lSINl0Khh8cZ4IWfTV5zAU5c1Mvj0tQ9q77/SOT5kdnqlcmZJEozb1Fic3WJ4zH4102h09guXRXrBfBlAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-20T20:08:51.123126Z"},"content_sha256":"7eded89d04f840767b3b5c184dbcaea7b9d1cf7520755e7864c76970973a6275","schema_version":"1.0","event_id":"sha256:7eded89d04f840767b3b5c184dbcaea7b9d1cf7520755e7864c76970973a6275"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/B4BBOOCP625YR3M6RTW6Z73T5A/bundle.json","state_url":"https://pith.science/pith/B4BBOOCP625YR3M6RTW6Z73T5A/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/B4BBOOCP625YR3M6RTW6Z73T5A/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":"2026-05-20T20:08:51Z","links":{"resolver":"https://pith.science/pith/B4BBOOCP625YR3M6RTW6Z73T5A","bundle":"https://pith.science/pith/B4BBOOCP625YR3M6RTW6Z73T5A/bundle.json","state":"https://pith.science/pith/B4BBOOCP625YR3M6RTW6Z73T5A/state.json","well_known_bundle":"https://pith.science/.well-known/pith/B4BBOOCP625YR3M6RTW6Z73T5A/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:B4BBOOCP625YR3M6RTW6Z73T5A","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":"57c47c6da9cc2d1397442def78f6b284976b689acbd25a366d8368a43ae7f9b9","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2011-09-21T11:21:28Z","title_canon_sha256":"0e621e4fcec78027ec99f8337250336281a3b2e656c38d63e767f5a5e54f5b3f"},"schema_version":"1.0","source":{"id":"1109.4504","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1109.4504","created_at":"2026-05-18T04:08:05Z"},{"alias_kind":"arxiv_version","alias_value":"1109.4504v2","created_at":"2026-05-18T04:08:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1109.4504","created_at":"2026-05-18T04:08:05Z"},{"alias_kind":"pith_short_12","alias_value":"B4BBOOCP625Y","created_at":"2026-05-18T12:26:24Z"},{"alias_kind":"pith_short_16","alias_value":"B4BBOOCP625YR3M6","created_at":"2026-05-18T12:26:24Z"},{"alias_kind":"pith_short_8","alias_value":"B4BBOOCP","created_at":"2026-05-18T12:26:24Z"}],"graph_snapshots":[{"event_id":"sha256:7eded89d04f840767b3b5c184dbcaea7b9d1cf7520755e7864c76970973a6275","target":"graph","created_at":"2026-05-18T04:08:05Z","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 relation between free carrier absorption and intersubband transitions in semiconductor heterostructures is resolved by comparing a sequence of structures. Our numerical and analytical results show how free carrier absorption evolves from the intersubband transitions in the limit of an infinite number of wells with vanishing barrier width. It is explicitly shown that the integral of the absorption over frequency matches the value obtained by the f-sum rule. This shows that a proper treatment of intersubband transitions is fully sufficient to simulate the entire electronic absorption in hete","authors_text":"Andreas Wacker, Emmanuel Dupont, Francesca Carosella, Gerald Bastard, Robson Ferreira","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2011-09-21T11:21:28Z","title":"Unraveling of free carrier absorption for terahertz radiation in heterostructures"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1109.4504","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":"sha256:9fc87eac7f256bb5d91071fc726de84a9f8ebac72063c7dc6a70f3fe53bf196d","target":"record","created_at":"2026-05-18T04:08:05Z","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":"57c47c6da9cc2d1397442def78f6b284976b689acbd25a366d8368a43ae7f9b9","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2011-09-21T11:21:28Z","title_canon_sha256":"0e621e4fcec78027ec99f8337250336281a3b2e656c38d63e767f5a5e54f5b3f"},"schema_version":"1.0","source":{"id":"1109.4504","kind":"arxiv","version":2}},"canonical_sha256":"0f0217384ff6bb88ed9e8cedecff73e8332372ce1bd2b830cbe302e56bc00c38","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"0f0217384ff6bb88ed9e8cedecff73e8332372ce1bd2b830cbe302e56bc00c38","first_computed_at":"2026-05-18T04:08:05.009938Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:08:05.009938Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"c6pZ7KVsF9ZPyBX3gAPI6dbOfoDgl+bAVSW2PzVZXcG+vejonaekfMjsiP6i2KBN34zmUl1n0vzEIzbeTxwXCA==","signature_status":"signed_v1","signed_at":"2026-05-18T04:08:05.010390Z","signed_message":"canonical_sha256_bytes"},"source_id":"1109.4504","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9fc87eac7f256bb5d91071fc726de84a9f8ebac72063c7dc6a70f3fe53bf196d","sha256:7eded89d04f840767b3b5c184dbcaea7b9d1cf7520755e7864c76970973a6275"],"state_sha256":"3427e7cadcb92142e2332ef137c7b3a05c38f070651276a4b51d33afa6d5620a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"T/MQXLzkycbAf6LA2imPIWQdV0kEPIfVskwe1fcfbh03HA82r+ozTscLlkTaV6ZXIXviO6oo342/nRRStQJtDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-20T20:08:51.125860Z","bundle_sha256":"d604c7fcb06af76b8298512da5a5754062e9305e4af8d7dec43b6f90066168da"}}