{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:ZUNLW3DLWDODA3CXGCYUZES5H3","short_pith_number":"pith:ZUNLW3DL","canonical_record":{"source":{"id":"1405.5781","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2014-05-22T14:59:28Z","cross_cats_sorted":[],"title_canon_sha256":"a30c31f3f33a9a5b385bb21e75814a885e3ec7b74d3ef7c882a6bc8e863046ac","abstract_canon_sha256":"eab0c79ffb5eb08922134bd4d168101ae9453bd596bb1c35f2d505d24dbf3f81"},"schema_version":"1.0"},"canonical_sha256":"cd1abb6c6bb0dc306c5730b14c925d3ed197b406176f4cae456ad628dbfd50a8","source":{"kind":"arxiv","id":"1405.5781","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1405.5781","created_at":"2026-05-18T02:38:44Z"},{"alias_kind":"arxiv_version","alias_value":"1405.5781v1","created_at":"2026-05-18T02:38:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1405.5781","created_at":"2026-05-18T02:38:44Z"},{"alias_kind":"pith_short_12","alias_value":"ZUNLW3DLWDOD","created_at":"2026-05-18T12:28:59Z"},{"alias_kind":"pith_short_16","alias_value":"ZUNLW3DLWDODA3CX","created_at":"2026-05-18T12:28:59Z"},{"alias_kind":"pith_short_8","alias_value":"ZUNLW3DL","created_at":"2026-05-18T12:28:59Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:ZUNLW3DLWDODA3CXGCYUZES5H3","target":"record","payload":{"canonical_record":{"source":{"id":"1405.5781","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2014-05-22T14:59:28Z","cross_cats_sorted":[],"title_canon_sha256":"a30c31f3f33a9a5b385bb21e75814a885e3ec7b74d3ef7c882a6bc8e863046ac","abstract_canon_sha256":"eab0c79ffb5eb08922134bd4d168101ae9453bd596bb1c35f2d505d24dbf3f81"},"schema_version":"1.0"},"canonical_sha256":"cd1abb6c6bb0dc306c5730b14c925d3ed197b406176f4cae456ad628dbfd50a8","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:38:44.078695Z","signature_b64":"sq6zjWdU0tSfKPLdqJijHGcFysaxEmOQO7dIEyIz6nqXv/GxkCSO1M3GbSQWBAh+MLiNXCR+1Xmt/YdDcmnEAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"cd1abb6c6bb0dc306c5730b14c925d3ed197b406176f4cae456ad628dbfd50a8","last_reissued_at":"2026-05-18T02:38:44.078304Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:38:44.078304Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1405.5781","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":"2026-05-18T02:38:44Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Gm44RxG3JB8HmVeH+x8akZMeycL5w/kfNKZ3JLCTI4sXaG8ilxnFQeIrabbQKdRIvTW5Tp//QH32CIRa7wzgBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T06:00:46.831965Z"},"content_sha256":"68b6fcd2c392ec0c704d92fd7fa560fd14ea8e59df2861794f803c7dcfe4ee34","schema_version":"1.0","event_id":"sha256:68b6fcd2c392ec0c704d92fd7fa560fd14ea8e59df2861794f803c7dcfe4ee34"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:ZUNLW3DLWDODA3CXGCYUZES5H3","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Nonlinear Photoluminescence in Atomically Thin Layered WSe2 Arising from Diffusion-Assisted Exciton-Exciton Annihilation","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mes-hall","authors_text":"Goki Eda, Kazunari Matsuda, Minglin Toh, Shinichiro Mouri, Weijie Zhao, Yuhei Miyauchi","submitted_at":"2014-05-22T14:59:28Z","abstract_excerpt":"We studied multi-exciton dynamics in monolayer WSe2 using nonlinear photoluminescence (PL) spectroscopy and Monte Carlo simulations. We observed strong nonlinear saturation behavior of exciton PL with increasing excitation power density, and long-distance exciton diffusion reaching several micrometers. We demonstrated that the diffusion-assisted exciton-exciton annihilation model accounts for the observed nonlinear PL behavior. The long-distance exciton diffusion and subsequent efficient exciton-exciton annihilation process determined the unusual multi-exciton dynamics in atomically thin layer"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1405.5781","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":"2026-05-18T02:38:44Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"LA0fj+CJLT65DgchhC9zjiqPf7eNYWGWVn5/wYriJxFrOBYySnqfjm4aYIn+JBnF9xj+WjP/HSQ44jQZ4T6dCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T06:00:46.832635Z"},"content_sha256":"bb8cd10064d60f1a04b5636dbddd2966cb6873bbc1d019b8460860b64f36d1ab","schema_version":"1.0","event_id":"sha256:bb8cd10064d60f1a04b5636dbddd2966cb6873bbc1d019b8460860b64f36d1ab"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ZUNLW3DLWDODA3CXGCYUZES5H3/bundle.json","state_url":"https://pith.science/pith/ZUNLW3DLWDODA3CXGCYUZES5H3/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ZUNLW3DLWDODA3CXGCYUZES5H3/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":"2026-05-26T06:00:46Z","links":{"resolver":"https://pith.science/pith/ZUNLW3DLWDODA3CXGCYUZES5H3","bundle":"https://pith.science/pith/ZUNLW3DLWDODA3CXGCYUZES5H3/bundle.json","state":"https://pith.science/pith/ZUNLW3DLWDODA3CXGCYUZES5H3/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ZUNLW3DLWDODA3CXGCYUZES5H3/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:ZUNLW3DLWDODA3CXGCYUZES5H3","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":"eab0c79ffb5eb08922134bd4d168101ae9453bd596bb1c35f2d505d24dbf3f81","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2014-05-22T14:59:28Z","title_canon_sha256":"a30c31f3f33a9a5b385bb21e75814a885e3ec7b74d3ef7c882a6bc8e863046ac"},"schema_version":"1.0","source":{"id":"1405.5781","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1405.5781","created_at":"2026-05-18T02:38:44Z"},{"alias_kind":"arxiv_version","alias_value":"1405.5781v1","created_at":"2026-05-18T02:38:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1405.5781","created_at":"2026-05-18T02:38:44Z"},{"alias_kind":"pith_short_12","alias_value":"ZUNLW3DLWDOD","created_at":"2026-05-18T12:28:59Z"},{"alias_kind":"pith_short_16","alias_value":"ZUNLW3DLWDODA3CX","created_at":"2026-05-18T12:28:59Z"},{"alias_kind":"pith_short_8","alias_value":"ZUNLW3DL","created_at":"2026-05-18T12:28:59Z"}],"graph_snapshots":[{"event_id":"sha256:bb8cd10064d60f1a04b5636dbddd2966cb6873bbc1d019b8460860b64f36d1ab","target":"graph","created_at":"2026-05-18T02:38:44Z","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 studied multi-exciton dynamics in monolayer WSe2 using nonlinear photoluminescence (PL) spectroscopy and Monte Carlo simulations. We observed strong nonlinear saturation behavior of exciton PL with increasing excitation power density, and long-distance exciton diffusion reaching several micrometers. We demonstrated that the diffusion-assisted exciton-exciton annihilation model accounts for the observed nonlinear PL behavior. The long-distance exciton diffusion and subsequent efficient exciton-exciton annihilation process determined the unusual multi-exciton dynamics in atomically thin layer","authors_text":"Goki Eda, Kazunari Matsuda, Minglin Toh, Shinichiro Mouri, Weijie Zhao, Yuhei Miyauchi","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2014-05-22T14:59:28Z","title":"Nonlinear Photoluminescence in Atomically Thin Layered WSe2 Arising from Diffusion-Assisted Exciton-Exciton Annihilation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1405.5781","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":"sha256:68b6fcd2c392ec0c704d92fd7fa560fd14ea8e59df2861794f803c7dcfe4ee34","target":"record","created_at":"2026-05-18T02:38:44Z","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":"eab0c79ffb5eb08922134bd4d168101ae9453bd596bb1c35f2d505d24dbf3f81","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2014-05-22T14:59:28Z","title_canon_sha256":"a30c31f3f33a9a5b385bb21e75814a885e3ec7b74d3ef7c882a6bc8e863046ac"},"schema_version":"1.0","source":{"id":"1405.5781","kind":"arxiv","version":1}},"canonical_sha256":"cd1abb6c6bb0dc306c5730b14c925d3ed197b406176f4cae456ad628dbfd50a8","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"cd1abb6c6bb0dc306c5730b14c925d3ed197b406176f4cae456ad628dbfd50a8","first_computed_at":"2026-05-18T02:38:44.078304Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:38:44.078304Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"sq6zjWdU0tSfKPLdqJijHGcFysaxEmOQO7dIEyIz6nqXv/GxkCSO1M3GbSQWBAh+MLiNXCR+1Xmt/YdDcmnEAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T02:38:44.078695Z","signed_message":"canonical_sha256_bytes"},"source_id":"1405.5781","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:68b6fcd2c392ec0c704d92fd7fa560fd14ea8e59df2861794f803c7dcfe4ee34","sha256:bb8cd10064d60f1a04b5636dbddd2966cb6873bbc1d019b8460860b64f36d1ab"],"state_sha256":"53245957a18313034232cf7f9dc7d4400afca84d0392beb7a244048b02e6769d"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Db7VYeC2mclxXUp23pRkLRBujhR0/vH6VP7q7V1FypAfeEoc38MJ869WtVn70HbUtpmqF47WPqgL/0dLv3PtCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T06:00:46.836036Z","bundle_sha256":"95467fdf4b30870e5a806864afc2339335cceffe98e717cb2e05d3d676a9f4e4"}}