{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:4T64TTKDTU5ON6EAO5IWBI5EQJ","short_pith_number":"pith:4T64TTKD","canonical_record":{"source":{"id":"1904.00390","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2019-03-31T12:12:53Z","cross_cats_sorted":["cond-mat.mes-hall"],"title_canon_sha256":"f5cdb0dae4ec9ef6783d7cedfc49bb76bcd560da31576fbb5ac77797c7b9dd41","abstract_canon_sha256":"8c19cdbe694d92058c845bb6f94ecb8a688622bcf9a3dc2f7df87d259bfdb4a7"},"schema_version":"1.0"},"canonical_sha256":"e4fdc9cd439d3ae6f880775160a3a4826d4ad7f8af010108d45f83fb051013cc","source":{"kind":"arxiv","id":"1904.00390","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1904.00390","created_at":"2026-05-17T23:49:48Z"},{"alias_kind":"arxiv_version","alias_value":"1904.00390v1","created_at":"2026-05-17T23:49:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1904.00390","created_at":"2026-05-17T23:49:48Z"},{"alias_kind":"pith_short_12","alias_value":"4T64TTKDTU5O","created_at":"2026-05-18T12:33:10Z"},{"alias_kind":"pith_short_16","alias_value":"4T64TTKDTU5ON6EA","created_at":"2026-05-18T12:33:10Z"},{"alias_kind":"pith_short_8","alias_value":"4T64TTKD","created_at":"2026-05-18T12:33:10Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:4T64TTKDTU5ON6EAO5IWBI5EQJ","target":"record","payload":{"canonical_record":{"source":{"id":"1904.00390","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2019-03-31T12:12:53Z","cross_cats_sorted":["cond-mat.mes-hall"],"title_canon_sha256":"f5cdb0dae4ec9ef6783d7cedfc49bb76bcd560da31576fbb5ac77797c7b9dd41","abstract_canon_sha256":"8c19cdbe694d92058c845bb6f94ecb8a688622bcf9a3dc2f7df87d259bfdb4a7"},"schema_version":"1.0"},"canonical_sha256":"e4fdc9cd439d3ae6f880775160a3a4826d4ad7f8af010108d45f83fb051013cc","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:49:48.505305Z","signature_b64":"3tvxX8ayc+prYZzDnRDq8beP6GGal6GDQkJZ0goXTrFTIeRVpeRlMAg0XDn1ByRwGwN15nThxSTqojf8e1jYCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e4fdc9cd439d3ae6f880775160a3a4826d4ad7f8af010108d45f83fb051013cc","last_reissued_at":"2026-05-17T23:49:48.504682Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:49:48.504682Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1904.00390","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-17T23:49:48Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WMWImVekRD7HumP0Egg4xzDiMU0uP17qXTTYesh3OL14afflXBbA9X5YU0xMQtDPfLsnCYDT1qGwa2tVAtsqCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T11:13:12.595748Z"},"content_sha256":"79665cc90e5a0078d38d7816a95676d9a6a0e5dcdc83ca0334251ba9614bf84c","schema_version":"1.0","event_id":"sha256:79665cc90e5a0078d38d7816a95676d9a6a0e5dcdc83ca0334251ba9614bf84c"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:4T64TTKDTU5ON6EAO5IWBI5EQJ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"InSe as a case between 3D and 2D layered crystals for excitons","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mes-hall"],"primary_cat":"cond-mat.mtrl-sci","authors_text":"A. Tiberj, B. Gil, M. Moret, O. Briot, T.V. Shubina, W. Desrat","submitted_at":"2019-03-31T12:12:53Z","abstract_excerpt":"We demonstrate the successive appearance of the exciton, biexciton, and P band of the exciton-exciton scattering with increasing excitation power in the photoluminescence of indium selenide layered crystals. The strict energy and momentum conservation rules of the P band are used to reexamine the exciton binding energy. The new value $\\geq 20$ meV is markedly higher than the currently accepted 14 meV, being however well consistent with the robustness of excitons up to room temperature. A peak controlled by the Sommerfeld factor is found near the bandgap ($\\sim 1.36$ eV), which puts the questio"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1904.00390","kind":"arxiv","version":1},"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":"2026-05-17T23:49:48Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"CwXJsBN592znzzOlN7QLN2fy2cGpxVpo9Hnd3mGT88la9CHGHnH26qjGtA4tcE77UR8qhEOQ3g6GsZBDA8vfBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T11:13:12.596094Z"},"content_sha256":"1831bb4e0ceaa6f12c967f313050d8fc5d47488db107b4913ee574c83ecff601","schema_version":"1.0","event_id":"sha256:1831bb4e0ceaa6f12c967f313050d8fc5d47488db107b4913ee574c83ecff601"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/4T64TTKDTU5ON6EAO5IWBI5EQJ/bundle.json","state_url":"https://pith.science/pith/4T64TTKDTU5ON6EAO5IWBI5EQJ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/4T64TTKDTU5ON6EAO5IWBI5EQJ/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":"2026-06-05T11:13:12Z","links":{"resolver":"https://pith.science/pith/4T64TTKDTU5ON6EAO5IWBI5EQJ","bundle":"https://pith.science/pith/4T64TTKDTU5ON6EAO5IWBI5EQJ/bundle.json","state":"https://pith.science/pith/4T64TTKDTU5ON6EAO5IWBI5EQJ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/4T64TTKDTU5ON6EAO5IWBI5EQJ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:4T64TTKDTU5ON6EAO5IWBI5EQJ","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":"8c19cdbe694d92058c845bb6f94ecb8a688622bcf9a3dc2f7df87d259bfdb4a7","cross_cats_sorted":["cond-mat.mes-hall"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2019-03-31T12:12:53Z","title_canon_sha256":"f5cdb0dae4ec9ef6783d7cedfc49bb76bcd560da31576fbb5ac77797c7b9dd41"},"schema_version":"1.0","source":{"id":"1904.00390","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1904.00390","created_at":"2026-05-17T23:49:48Z"},{"alias_kind":"arxiv_version","alias_value":"1904.00390v1","created_at":"2026-05-17T23:49:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1904.00390","created_at":"2026-05-17T23:49:48Z"},{"alias_kind":"pith_short_12","alias_value":"4T64TTKDTU5O","created_at":"2026-05-18T12:33:10Z"},{"alias_kind":"pith_short_16","alias_value":"4T64TTKDTU5ON6EA","created_at":"2026-05-18T12:33:10Z"},{"alias_kind":"pith_short_8","alias_value":"4T64TTKD","created_at":"2026-05-18T12:33:10Z"}],"graph_snapshots":[{"event_id":"sha256:1831bb4e0ceaa6f12c967f313050d8fc5d47488db107b4913ee574c83ecff601","target":"graph","created_at":"2026-05-17T23:49:48Z","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 demonstrate the successive appearance of the exciton, biexciton, and P band of the exciton-exciton scattering with increasing excitation power in the photoluminescence of indium selenide layered crystals. The strict energy and momentum conservation rules of the P band are used to reexamine the exciton binding energy. The new value $\\geq 20$ meV is markedly higher than the currently accepted 14 meV, being however well consistent with the robustness of excitons up to room temperature. A peak controlled by the Sommerfeld factor is found near the bandgap ($\\sim 1.36$ eV), which puts the questio","authors_text":"A. Tiberj, B. Gil, M. Moret, O. Briot, T.V. Shubina, W. Desrat","cross_cats":["cond-mat.mes-hall"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2019-03-31T12:12:53Z","title":"InSe as a case between 3D and 2D layered crystals for excitons"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1904.00390","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":"sha256:79665cc90e5a0078d38d7816a95676d9a6a0e5dcdc83ca0334251ba9614bf84c","target":"record","created_at":"2026-05-17T23:49:48Z","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":"8c19cdbe694d92058c845bb6f94ecb8a688622bcf9a3dc2f7df87d259bfdb4a7","cross_cats_sorted":["cond-mat.mes-hall"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2019-03-31T12:12:53Z","title_canon_sha256":"f5cdb0dae4ec9ef6783d7cedfc49bb76bcd560da31576fbb5ac77797c7b9dd41"},"schema_version":"1.0","source":{"id":"1904.00390","kind":"arxiv","version":1}},"canonical_sha256":"e4fdc9cd439d3ae6f880775160a3a4826d4ad7f8af010108d45f83fb051013cc","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e4fdc9cd439d3ae6f880775160a3a4826d4ad7f8af010108d45f83fb051013cc","first_computed_at":"2026-05-17T23:49:48.504682Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:49:48.504682Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"3tvxX8ayc+prYZzDnRDq8beP6GGal6GDQkJZ0goXTrFTIeRVpeRlMAg0XDn1ByRwGwN15nThxSTqojf8e1jYCQ==","signature_status":"signed_v1","signed_at":"2026-05-17T23:49:48.505305Z","signed_message":"canonical_sha256_bytes"},"source_id":"1904.00390","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:79665cc90e5a0078d38d7816a95676d9a6a0e5dcdc83ca0334251ba9614bf84c","sha256:1831bb4e0ceaa6f12c967f313050d8fc5d47488db107b4913ee574c83ecff601"],"state_sha256":"c2d98e2be6accf787b3373afb59f1aa2ce843fd20496e744ba2708c5bc72456c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"lXZtljrEDXf3RcZ/T4zd9v6yMa95EToOKR01V8sXlZ0M5LWoNn1hA59hTypoiTLT54IVkXddPJT2+ESBQ6jcAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-05T11:13:12.598662Z","bundle_sha256":"8b7e6c22fee83105f6a2a0bbec93a5282742a84608a217f0c5ffb9b1e17309e7"}}