{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:6RGGVMBHHDMMG3XZRSJPEV3WNH","short_pith_number":"pith:6RGGVMBH","canonical_record":{"source":{"id":"1802.07270","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2018-02-20T19:00:03Z","cross_cats_sorted":["cond-mat.mtrl-sci"],"title_canon_sha256":"d5a6088e5354cbc10b9680b0c5daaf80f2a201ce238064d4d38a4d2e428c4aad","abstract_canon_sha256":"a90656cd9e18fc03fe06d51f5e1880a794aacd5ba01562b8aecd49c4f6714fe3"},"schema_version":"1.0"},"canonical_sha256":"f44c6ab02738d8c36ef98c92f2577669d013cdad518a448ec5ed909dda02b826","source":{"kind":"arxiv","id":"1802.07270","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1802.07270","created_at":"2026-05-18T00:13:04Z"},{"alias_kind":"arxiv_version","alias_value":"1802.07270v2","created_at":"2026-05-18T00:13:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1802.07270","created_at":"2026-05-18T00:13:04Z"},{"alias_kind":"pith_short_12","alias_value":"6RGGVMBHHDMM","created_at":"2026-05-18T12:32:11Z"},{"alias_kind":"pith_short_16","alias_value":"6RGGVMBHHDMMG3XZ","created_at":"2026-05-18T12:32:11Z"},{"alias_kind":"pith_short_8","alias_value":"6RGGVMBH","created_at":"2026-05-18T12:32:11Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:6RGGVMBHHDMMG3XZRSJPEV3WNH","target":"record","payload":{"canonical_record":{"source":{"id":"1802.07270","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2018-02-20T19:00:03Z","cross_cats_sorted":["cond-mat.mtrl-sci"],"title_canon_sha256":"d5a6088e5354cbc10b9680b0c5daaf80f2a201ce238064d4d38a4d2e428c4aad","abstract_canon_sha256":"a90656cd9e18fc03fe06d51f5e1880a794aacd5ba01562b8aecd49c4f6714fe3"},"schema_version":"1.0"},"canonical_sha256":"f44c6ab02738d8c36ef98c92f2577669d013cdad518a448ec5ed909dda02b826","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:13:04.615929Z","signature_b64":"bB8LKPQR9N46tC9B0bAtzEmxUJ/jaKaTDvKw1am/CuMnS+hssTg0/7wE9KVfM1d+wyGT3ipjag1P0azxYKbkAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f44c6ab02738d8c36ef98c92f2577669d013cdad518a448ec5ed909dda02b826","last_reissued_at":"2026-05-18T00:13:04.615130Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:13:04.615130Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1802.07270","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":"2026-05-18T00:13:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"yVoU9HVsZBVLtKXfJGyDXfHdXghO/9gks8HcKWyBUZmIu7l8WzzN3QzBPsP1Frqw7Dj/6XHCOdz/mVB6SANAAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-20T07:00:49.353727Z"},"content_sha256":"a663aa705d0931340bed89def0ce899918cb8114820458c7f7c773a3863c8c52","schema_version":"1.0","event_id":"sha256:a663aa705d0931340bed89def0ce899918cb8114820458c7f7c773a3863c8c52"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:6RGGVMBHHDMMG3XZRSJPEV3WNH","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Photoemission signature of excitons","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mtrl-sci"],"primary_cat":"cond-mat.mes-hall","authors_text":"Alexander F. Kemper, Avinash Rustagi","submitted_at":"2018-02-20T19:00:03Z","abstract_excerpt":"Excitons - the particle-hole bound states - composed of localized electron-hole states in semiconducting systems are crucial to explaining the optical spectrum. Spectroscopic measurements can contain signatures of these two particle bound states and can be particularly useful in determining the characteristics of these excitons. We formulate an expression for evaluating the angle-resolved photoemission spectrum arising from the ionization of excitons given their steady-state distribution in a semiconductor. We show that the spectrum contains information about the direct/indirect band gap natur"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1802.07270","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":"2026-05-18T00:13:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"abku/8rtSnwByo2IkHlebbaVsdFDkBnkqDPbgaoj5yFeP6cpilBAk8U1gPleqAqxXEkb9SxExTi4qplmpYhuBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-20T07:00:49.354064Z"},"content_sha256":"1a21dbef5c9102e06f276cdc2233d71c4dc69b7fa1e5edc45b5ef9f2b1c5f116","schema_version":"1.0","event_id":"sha256:1a21dbef5c9102e06f276cdc2233d71c4dc69b7fa1e5edc45b5ef9f2b1c5f116"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/6RGGVMBHHDMMG3XZRSJPEV3WNH/bundle.json","state_url":"https://pith.science/pith/6RGGVMBHHDMMG3XZRSJPEV3WNH/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/6RGGVMBHHDMMG3XZRSJPEV3WNH/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":"2026-05-20T07:00:49Z","links":{"resolver":"https://pith.science/pith/6RGGVMBHHDMMG3XZRSJPEV3WNH","bundle":"https://pith.science/pith/6RGGVMBHHDMMG3XZRSJPEV3WNH/bundle.json","state":"https://pith.science/pith/6RGGVMBHHDMMG3XZRSJPEV3WNH/state.json","well_known_bundle":"https://pith.science/.well-known/pith/6RGGVMBHHDMMG3XZRSJPEV3WNH/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:6RGGVMBHHDMMG3XZRSJPEV3WNH","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":"a90656cd9e18fc03fe06d51f5e1880a794aacd5ba01562b8aecd49c4f6714fe3","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2018-02-20T19:00:03Z","title_canon_sha256":"d5a6088e5354cbc10b9680b0c5daaf80f2a201ce238064d4d38a4d2e428c4aad"},"schema_version":"1.0","source":{"id":"1802.07270","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1802.07270","created_at":"2026-05-18T00:13:04Z"},{"alias_kind":"arxiv_version","alias_value":"1802.07270v2","created_at":"2026-05-18T00:13:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1802.07270","created_at":"2026-05-18T00:13:04Z"},{"alias_kind":"pith_short_12","alias_value":"6RGGVMBHHDMM","created_at":"2026-05-18T12:32:11Z"},{"alias_kind":"pith_short_16","alias_value":"6RGGVMBHHDMMG3XZ","created_at":"2026-05-18T12:32:11Z"},{"alias_kind":"pith_short_8","alias_value":"6RGGVMBH","created_at":"2026-05-18T12:32:11Z"}],"graph_snapshots":[{"event_id":"sha256:1a21dbef5c9102e06f276cdc2233d71c4dc69b7fa1e5edc45b5ef9f2b1c5f116","target":"graph","created_at":"2026-05-18T00:13:04Z","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":"Excitons - the particle-hole bound states - composed of localized electron-hole states in semiconducting systems are crucial to explaining the optical spectrum. Spectroscopic measurements can contain signatures of these two particle bound states and can be particularly useful in determining the characteristics of these excitons. We formulate an expression for evaluating the angle-resolved photoemission spectrum arising from the ionization of excitons given their steady-state distribution in a semiconductor. We show that the spectrum contains information about the direct/indirect band gap natur","authors_text":"Alexander F. Kemper, Avinash Rustagi","cross_cats":["cond-mat.mtrl-sci"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2018-02-20T19:00:03Z","title":"Photoemission signature of excitons"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1802.07270","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:a663aa705d0931340bed89def0ce899918cb8114820458c7f7c773a3863c8c52","target":"record","created_at":"2026-05-18T00:13:04Z","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":"a90656cd9e18fc03fe06d51f5e1880a794aacd5ba01562b8aecd49c4f6714fe3","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2018-02-20T19:00:03Z","title_canon_sha256":"d5a6088e5354cbc10b9680b0c5daaf80f2a201ce238064d4d38a4d2e428c4aad"},"schema_version":"1.0","source":{"id":"1802.07270","kind":"arxiv","version":2}},"canonical_sha256":"f44c6ab02738d8c36ef98c92f2577669d013cdad518a448ec5ed909dda02b826","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f44c6ab02738d8c36ef98c92f2577669d013cdad518a448ec5ed909dda02b826","first_computed_at":"2026-05-18T00:13:04.615130Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:13:04.615130Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"bB8LKPQR9N46tC9B0bAtzEmxUJ/jaKaTDvKw1am/CuMnS+hssTg0/7wE9KVfM1d+wyGT3ipjag1P0azxYKbkAw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:13:04.615929Z","signed_message":"canonical_sha256_bytes"},"source_id":"1802.07270","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a663aa705d0931340bed89def0ce899918cb8114820458c7f7c773a3863c8c52","sha256:1a21dbef5c9102e06f276cdc2233d71c4dc69b7fa1e5edc45b5ef9f2b1c5f116"],"state_sha256":"ea9f11e1f450241b87e099dc1e4e33c3df92a34e847cce327c553292fd6fe9bc"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"DgAq6ntLUf/oTO0NGXWwWH5rMSgFalSnk+X196A4ipxau+A/IbkaqEm7+oxDFeseC6432JYFbY7N24UKAsHBAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-20T07:00:49.356234Z","bundle_sha256":"d95237207d7c2b1661978157514c5a978b1c3528e81e74551058c75c206cf11e"}}