{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:NDAAB2LLUGKZNIMLN5LTQ2XOHC","short_pith_number":"pith:NDAAB2LL","canonical_record":{"source":{"id":"1307.1526","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2013-07-05T05:57:15Z","cross_cats_sorted":[],"title_canon_sha256":"f0c9180cd23255c6ccf673c4fb4ed23f10bebc6bc8cce3c54f42c6ac6b92a795","abstract_canon_sha256":"8a7bdb30d562931118a67612e5ebe9fbe2a2be77875374e8ced6dda36b280fd5"},"schema_version":"1.0"},"canonical_sha256":"68c000e96ba19596a18b6f57386aee38aa2b35fc035f3cc8006c8d9375e3eda5","source":{"kind":"arxiv","id":"1307.1526","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1307.1526","created_at":"2026-05-18T01:48:59Z"},{"alias_kind":"arxiv_version","alias_value":"1307.1526v1","created_at":"2026-05-18T01:48:59Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1307.1526","created_at":"2026-05-18T01:48:59Z"},{"alias_kind":"pith_short_12","alias_value":"NDAAB2LLUGKZ","created_at":"2026-05-18T12:27:52Z"},{"alias_kind":"pith_short_16","alias_value":"NDAAB2LLUGKZNIML","created_at":"2026-05-18T12:27:52Z"},{"alias_kind":"pith_short_8","alias_value":"NDAAB2LL","created_at":"2026-05-18T12:27:52Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:NDAAB2LLUGKZNIMLN5LTQ2XOHC","target":"record","payload":{"canonical_record":{"source":{"id":"1307.1526","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2013-07-05T05:57:15Z","cross_cats_sorted":[],"title_canon_sha256":"f0c9180cd23255c6ccf673c4fb4ed23f10bebc6bc8cce3c54f42c6ac6b92a795","abstract_canon_sha256":"8a7bdb30d562931118a67612e5ebe9fbe2a2be77875374e8ced6dda36b280fd5"},"schema_version":"1.0"},"canonical_sha256":"68c000e96ba19596a18b6f57386aee38aa2b35fc035f3cc8006c8d9375e3eda5","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:48:59.526022Z","signature_b64":"YduIbTHJIksQMz5NMKiwxigURYONWdlww1ClgRB9nhUl9DlTmGVLvu+zUuQuxvRJ68NCHEVDi8fPHxUJTkPXCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"68c000e96ba19596a18b6f57386aee38aa2b35fc035f3cc8006c8d9375e3eda5","last_reissued_at":"2026-05-18T01:48:59.525626Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:48:59.525626Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1307.1526","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":"2026-05-18T01:48:59Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"fKINMsbl0vFjFjWxr+fRqpLdRx24TuYZsqvytyUhDirKjodhT3sMtPAy7+bZcmXkWXdEC1s/+qCATJXnyunlAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T11:54:38.207947Z"},"content_sha256":"d463ccaec15fd754dc0152a17352bbdf2ce5a2aeba18ae1c56f8a6d168cd3b8b","schema_version":"1.0","event_id":"sha256:d463ccaec15fd754dc0152a17352bbdf2ce5a2aeba18ae1c56f8a6d168cd3b8b"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:NDAAB2LLUGKZNIMLN5LTQ2XOHC","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Initial carrier-envelope phase of few-cycle pulses determined by THz emission from air plasma","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.optics","authors_text":"Liwei Song, Peng Liu, Rongjie Xu, Ruxin Li, Ya Bai, Zhizhan Xu","submitted_at":"2013-07-05T05:57:15Z","abstract_excerpt":"The evolution of THz waveform generated in air plasma provides a sensitive probe to the variation of the carrier envelope phase (CEP) of propagating intense few-cycle pulses. Our experimental observation and calculation reveal that the number and positions of the inversion of THz waveform are dependent on the initial CEP, which is near 0.5{\\pi} constantly under varied input pulse energies when two inversions of THz waveform in air plasma become one. This provides a method of measuring the initial CEP in an accuracy that is only limited by the stability of the driving few-cycle pulses."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1307.1526","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":"2026-05-18T01:48:59Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"LxlklRZxteQy11FuOIwCS2fUJrxu3HiLcQGVBmWJTJ9ey6YuQLd5LH+ajKJQ/7XiD5QTv0SatE3uIgxyR5PsAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T11:54:38.208623Z"},"content_sha256":"8aef444064273a06baad9440276637eb9b852a7986222501d8b08764d8417077","schema_version":"1.0","event_id":"sha256:8aef444064273a06baad9440276637eb9b852a7986222501d8b08764d8417077"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/NDAAB2LLUGKZNIMLN5LTQ2XOHC/bundle.json","state_url":"https://pith.science/pith/NDAAB2LLUGKZNIMLN5LTQ2XOHC/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/NDAAB2LLUGKZNIMLN5LTQ2XOHC/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":"2026-05-26T11:54:38Z","links":{"resolver":"https://pith.science/pith/NDAAB2LLUGKZNIMLN5LTQ2XOHC","bundle":"https://pith.science/pith/NDAAB2LLUGKZNIMLN5LTQ2XOHC/bundle.json","state":"https://pith.science/pith/NDAAB2LLUGKZNIMLN5LTQ2XOHC/state.json","well_known_bundle":"https://pith.science/.well-known/pith/NDAAB2LLUGKZNIMLN5LTQ2XOHC/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:NDAAB2LLUGKZNIMLN5LTQ2XOHC","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":"8a7bdb30d562931118a67612e5ebe9fbe2a2be77875374e8ced6dda36b280fd5","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2013-07-05T05:57:15Z","title_canon_sha256":"f0c9180cd23255c6ccf673c4fb4ed23f10bebc6bc8cce3c54f42c6ac6b92a795"},"schema_version":"1.0","source":{"id":"1307.1526","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1307.1526","created_at":"2026-05-18T01:48:59Z"},{"alias_kind":"arxiv_version","alias_value":"1307.1526v1","created_at":"2026-05-18T01:48:59Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1307.1526","created_at":"2026-05-18T01:48:59Z"},{"alias_kind":"pith_short_12","alias_value":"NDAAB2LLUGKZ","created_at":"2026-05-18T12:27:52Z"},{"alias_kind":"pith_short_16","alias_value":"NDAAB2LLUGKZNIML","created_at":"2026-05-18T12:27:52Z"},{"alias_kind":"pith_short_8","alias_value":"NDAAB2LL","created_at":"2026-05-18T12:27:52Z"}],"graph_snapshots":[{"event_id":"sha256:8aef444064273a06baad9440276637eb9b852a7986222501d8b08764d8417077","target":"graph","created_at":"2026-05-18T01:48:59Z","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 evolution of THz waveform generated in air plasma provides a sensitive probe to the variation of the carrier envelope phase (CEP) of propagating intense few-cycle pulses. Our experimental observation and calculation reveal that the number and positions of the inversion of THz waveform are dependent on the initial CEP, which is near 0.5{\\pi} constantly under varied input pulse energies when two inversions of THz waveform in air plasma become one. This provides a method of measuring the initial CEP in an accuracy that is only limited by the stability of the driving few-cycle pulses.","authors_text":"Liwei Song, Peng Liu, Rongjie Xu, Ruxin Li, Ya Bai, Zhizhan Xu","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2013-07-05T05:57:15Z","title":"Initial carrier-envelope phase of few-cycle pulses determined by THz emission from air plasma"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1307.1526","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:d463ccaec15fd754dc0152a17352bbdf2ce5a2aeba18ae1c56f8a6d168cd3b8b","target":"record","created_at":"2026-05-18T01:48:59Z","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":"8a7bdb30d562931118a67612e5ebe9fbe2a2be77875374e8ced6dda36b280fd5","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2013-07-05T05:57:15Z","title_canon_sha256":"f0c9180cd23255c6ccf673c4fb4ed23f10bebc6bc8cce3c54f42c6ac6b92a795"},"schema_version":"1.0","source":{"id":"1307.1526","kind":"arxiv","version":1}},"canonical_sha256":"68c000e96ba19596a18b6f57386aee38aa2b35fc035f3cc8006c8d9375e3eda5","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"68c000e96ba19596a18b6f57386aee38aa2b35fc035f3cc8006c8d9375e3eda5","first_computed_at":"2026-05-18T01:48:59.525626Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:48:59.525626Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"YduIbTHJIksQMz5NMKiwxigURYONWdlww1ClgRB9nhUl9DlTmGVLvu+zUuQuxvRJ68NCHEVDi8fPHxUJTkPXCA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:48:59.526022Z","signed_message":"canonical_sha256_bytes"},"source_id":"1307.1526","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d463ccaec15fd754dc0152a17352bbdf2ce5a2aeba18ae1c56f8a6d168cd3b8b","sha256:8aef444064273a06baad9440276637eb9b852a7986222501d8b08764d8417077"],"state_sha256":"90a393cc3d53ed146267ed9d90f00c91987c922aa5f67a797abc8a7a3c84db5c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/Wjin9TWlejt7eyH8Z9jqTqWtyC4Tr2UCDz4bae3Cb/IEMf1ItV80uu64AHMOXNwEEaaq5GrPkTc0LILIO9wBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T11:54:38.211917Z","bundle_sha256":"49d409d37382f46a716e39c27c98debd58aa8547d4a68bfeb49b0a5273711fa2"}}