{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:4IN2L7GREF5END7XJYXGBR3FSS","short_pith_number":"pith:4IN2L7GR","canonical_record":{"source":{"id":"1301.4838","kind":"arxiv","version":4},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2013-01-21T12:23:09Z","cross_cats_sorted":["cond-mat.quant-gas"],"title_canon_sha256":"45b5d5387210ab942266fcec5ec5b4ad330cbc14f00a3ac6947e08d198de8867","abstract_canon_sha256":"0e648b2131fcef420bfbefb11ef2f55afa594982dcc206213f21f0d83180f77a"},"schema_version":"1.0"},"canonical_sha256":"e21ba5fcd1217a468ff74e2e60c76594839a8222f708eb982e75042526c361a4","source":{"kind":"arxiv","id":"1301.4838","version":4},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1301.4838","created_at":"2026-05-18T02:31:30Z"},{"alias_kind":"arxiv_version","alias_value":"1301.4838v4","created_at":"2026-05-18T02:31:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1301.4838","created_at":"2026-05-18T02:31:30Z"},{"alias_kind":"pith_short_12","alias_value":"4IN2L7GREF5E","created_at":"2026-05-18T12:27:34Z"},{"alias_kind":"pith_short_16","alias_value":"4IN2L7GREF5END7X","created_at":"2026-05-18T12:27:34Z"},{"alias_kind":"pith_short_8","alias_value":"4IN2L7GR","created_at":"2026-05-18T12:27:34Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:4IN2L7GREF5END7XJYXGBR3FSS","target":"record","payload":{"canonical_record":{"source":{"id":"1301.4838","kind":"arxiv","version":4},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2013-01-21T12:23:09Z","cross_cats_sorted":["cond-mat.quant-gas"],"title_canon_sha256":"45b5d5387210ab942266fcec5ec5b4ad330cbc14f00a3ac6947e08d198de8867","abstract_canon_sha256":"0e648b2131fcef420bfbefb11ef2f55afa594982dcc206213f21f0d83180f77a"},"schema_version":"1.0"},"canonical_sha256":"e21ba5fcd1217a468ff74e2e60c76594839a8222f708eb982e75042526c361a4","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:31:30.227001Z","signature_b64":"CJHKkRVK5jXg2/rYOkqhVXcd8q7tW1FBC3PkW5VUk2BxTqNT3lFc4Zp+lQRio2z+q3eqBlFGOKAcIvGH7NPgDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e21ba5fcd1217a468ff74e2e60c76594839a8222f708eb982e75042526c361a4","last_reissued_at":"2026-05-18T02:31:30.226577Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:31:30.226577Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1301.4838","source_version":4,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T02:31:30Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"fLj6MZsLXZRR+g6eQtO71RpeOXFtAaQuy0JQR6h2p8m1+UYlMynI9cxrm5dK3ixdD9yBiBwkSaMQvnEtlPXUCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T10:54:51.011247Z"},"content_sha256":"868c942d55fb62992383b62d710af3e7c4b1cc9f69589e090ec4f9d7f4e98695","schema_version":"1.0","event_id":"sha256:868c942d55fb62992383b62d710af3e7c4b1cc9f69589e090ec4f9d7f4e98695"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:4IN2L7GREF5END7XJYXGBR3FSS","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Second Thresholds in BEC-BCS-Laser Crossover of Exciton-Polariton Systems","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.quant-gas"],"primary_cat":"cond-mat.mes-hall","authors_text":"Kenji Kamide, Makoto Yamaguchi, Ryota Nii, Tetsuo Ogawa, Yoshihisa Yamamoto","submitted_at":"2013-01-21T12:23:09Z","abstract_excerpt":"The mechanism of second thresholds observed in several experiments is theoretically revealed by studying the BEC-BCS-laser crossover in exciton-polariton systems. We found that there are two different types for the second thresholds; one is a crossover within quasi-equilibrium phases and the other is into non-equilibrium (lasing). In both cases, the light-induced band renormalization causes gaps in the conduction and valence bands, which indicates the exsistence of bound electron-hole pairs in contrast to earlier expectations. We also show that these two types can be distinguished by the gain "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1301.4838","kind":"arxiv","version":4},"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":"2026-05-18T02:31:30Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"bVY6n6QlWAz+I0GyXHpLOYrBkbeWxpdrYcSjBWtNric1/LFHBmZXe31gsoQdEegQiW73E+OV5dhnAAtBGsn4BQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T10:54:51.011873Z"},"content_sha256":"1f945e2b270ec62429a51068735db36dc7b80857bdc55ee8c90618e262b701c0","schema_version":"1.0","event_id":"sha256:1f945e2b270ec62429a51068735db36dc7b80857bdc55ee8c90618e262b701c0"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/4IN2L7GREF5END7XJYXGBR3FSS/bundle.json","state_url":"https://pith.science/pith/4IN2L7GREF5END7XJYXGBR3FSS/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/4IN2L7GREF5END7XJYXGBR3FSS/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":"2026-05-27T10:54:51Z","links":{"resolver":"https://pith.science/pith/4IN2L7GREF5END7XJYXGBR3FSS","bundle":"https://pith.science/pith/4IN2L7GREF5END7XJYXGBR3FSS/bundle.json","state":"https://pith.science/pith/4IN2L7GREF5END7XJYXGBR3FSS/state.json","well_known_bundle":"https://pith.science/.well-known/pith/4IN2L7GREF5END7XJYXGBR3FSS/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:4IN2L7GREF5END7XJYXGBR3FSS","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":"0e648b2131fcef420bfbefb11ef2f55afa594982dcc206213f21f0d83180f77a","cross_cats_sorted":["cond-mat.quant-gas"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2013-01-21T12:23:09Z","title_canon_sha256":"45b5d5387210ab942266fcec5ec5b4ad330cbc14f00a3ac6947e08d198de8867"},"schema_version":"1.0","source":{"id":"1301.4838","kind":"arxiv","version":4}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1301.4838","created_at":"2026-05-18T02:31:30Z"},{"alias_kind":"arxiv_version","alias_value":"1301.4838v4","created_at":"2026-05-18T02:31:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1301.4838","created_at":"2026-05-18T02:31:30Z"},{"alias_kind":"pith_short_12","alias_value":"4IN2L7GREF5E","created_at":"2026-05-18T12:27:34Z"},{"alias_kind":"pith_short_16","alias_value":"4IN2L7GREF5END7X","created_at":"2026-05-18T12:27:34Z"},{"alias_kind":"pith_short_8","alias_value":"4IN2L7GR","created_at":"2026-05-18T12:27:34Z"}],"graph_snapshots":[{"event_id":"sha256:1f945e2b270ec62429a51068735db36dc7b80857bdc55ee8c90618e262b701c0","target":"graph","created_at":"2026-05-18T02:31:30Z","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 mechanism of second thresholds observed in several experiments is theoretically revealed by studying the BEC-BCS-laser crossover in exciton-polariton systems. We found that there are two different types for the second thresholds; one is a crossover within quasi-equilibrium phases and the other is into non-equilibrium (lasing). In both cases, the light-induced band renormalization causes gaps in the conduction and valence bands, which indicates the exsistence of bound electron-hole pairs in contrast to earlier expectations. We also show that these two types can be distinguished by the gain ","authors_text":"Kenji Kamide, Makoto Yamaguchi, Ryota Nii, Tetsuo Ogawa, Yoshihisa Yamamoto","cross_cats":["cond-mat.quant-gas"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2013-01-21T12:23:09Z","title":"Second Thresholds in BEC-BCS-Laser Crossover of Exciton-Polariton Systems"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1301.4838","kind":"arxiv","version":4},"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":"sha256:868c942d55fb62992383b62d710af3e7c4b1cc9f69589e090ec4f9d7f4e98695","target":"record","created_at":"2026-05-18T02:31:30Z","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":"0e648b2131fcef420bfbefb11ef2f55afa594982dcc206213f21f0d83180f77a","cross_cats_sorted":["cond-mat.quant-gas"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2013-01-21T12:23:09Z","title_canon_sha256":"45b5d5387210ab942266fcec5ec5b4ad330cbc14f00a3ac6947e08d198de8867"},"schema_version":"1.0","source":{"id":"1301.4838","kind":"arxiv","version":4}},"canonical_sha256":"e21ba5fcd1217a468ff74e2e60c76594839a8222f708eb982e75042526c361a4","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e21ba5fcd1217a468ff74e2e60c76594839a8222f708eb982e75042526c361a4","first_computed_at":"2026-05-18T02:31:30.226577Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:31:30.226577Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"CJHKkRVK5jXg2/rYOkqhVXcd8q7tW1FBC3PkW5VUk2BxTqNT3lFc4Zp+lQRio2z+q3eqBlFGOKAcIvGH7NPgDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T02:31:30.227001Z","signed_message":"canonical_sha256_bytes"},"source_id":"1301.4838","source_kind":"arxiv","source_version":4}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:868c942d55fb62992383b62d710af3e7c4b1cc9f69589e090ec4f9d7f4e98695","sha256:1f945e2b270ec62429a51068735db36dc7b80857bdc55ee8c90618e262b701c0"],"state_sha256":"2077f4e3295a8e66501f0fea30ef686a2c849dd4a8b7be7ced115364259e784c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"I65/pdg1nzvt9rul3aMOAqx2KLlCoMFxbk2lCtb3KXxyDA9/SKniOjEsnjgqHw63/jPLUv4+Gp9tQIA1Tx9ACQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T10:54:51.015299Z","bundle_sha256":"41f534b3ea8e87fe43fdd6ffc9777c33b7a49c19c7ba61cbc283f346cd600e80"}}