{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2009:QXL3JNGN4YKP3HIDY6U67U2GAL","short_pith_number":"pith:QXL3JNGN","canonical_record":{"source":{"id":"0904.2649","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2009-04-17T07:39:08Z","cross_cats_sorted":["gr-qc","hep-ph"],"title_canon_sha256":"5d5586bded6bea08c566e8e3be1abdb864e2a48278c3ecf3a2197ccfbf084b02","abstract_canon_sha256":"2fcec06568fcbe2d13df7e9c9d7014ec001a12d1840e69d3e91001b05b82bdf1"},"schema_version":"1.0"},"canonical_sha256":"85d7b4b4cde614fd9d03c7a9efd34602f0ef5300c96f080913bb5c915a8a0d85","source":{"kind":"arxiv","id":"0904.2649","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0904.2649","created_at":"2026-07-04T17:26:25Z"},{"alias_kind":"arxiv_version","alias_value":"0904.2649v3","created_at":"2026-07-04T17:26:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0904.2649","created_at":"2026-07-04T17:26:25Z"},{"alias_kind":"pith_short_12","alias_value":"QXL3JNGN4YKP","created_at":"2026-07-04T17:26:25Z"},{"alias_kind":"pith_short_16","alias_value":"QXL3JNGN4YKP3HID","created_at":"2026-07-04T17:26:25Z"},{"alias_kind":"pith_short_8","alias_value":"QXL3JNGN","created_at":"2026-07-04T17:26:25Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2009:QXL3JNGN4YKP3HIDY6U67U2GAL","target":"record","payload":{"canonical_record":{"source":{"id":"0904.2649","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2009-04-17T07:39:08Z","cross_cats_sorted":["gr-qc","hep-ph"],"title_canon_sha256":"5d5586bded6bea08c566e8e3be1abdb864e2a48278c3ecf3a2197ccfbf084b02","abstract_canon_sha256":"2fcec06568fcbe2d13df7e9c9d7014ec001a12d1840e69d3e91001b05b82bdf1"},"schema_version":"1.0"},"canonical_sha256":"85d7b4b4cde614fd9d03c7a9efd34602f0ef5300c96f080913bb5c915a8a0d85","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T17:26:25.589471Z","signature_b64":"suXXSVDQstW3+KTKQnNT/o3ormf22kg1rjZY5V+2jV8delsPhfACFdvavXqZTa+eXfqTSeqm9Y+bNKrDhzQTBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"85d7b4b4cde614fd9d03c7a9efd34602f0ef5300c96f080913bb5c915a8a0d85","last_reissued_at":"2026-07-04T17:26:25.589030Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T17:26:25.589030Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0904.2649","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-04T17:26:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Zyo9WUE7qkVeFrZfy1kFSq26K38VK1ckIjHaQTbOuEPgsTeyG0Mue5905D3Dr9sktgpfEOWnWwpAvlvBUQgjCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-11T17:50:38.179353Z"},"content_sha256":"e4c460ed316a3024258ed4dc75ac3725f10d22747cf20dbd676bbd581317ca6c","schema_version":"1.0","event_id":"sha256:e4c460ed316a3024258ed4dc75ac3725f10d22747cf20dbd676bbd581317ca6c"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2009:QXL3JNGN4YKP3HIDY6U67U2GAL","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A geometric description of the non-Gaussianity generated at the end of multi-field inflation","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["gr-qc","hep-ph"],"primary_cat":"hep-th","authors_text":"Qing-Guo Huang","submitted_at":"2009-04-17T07:39:08Z","abstract_excerpt":"In this paper we mainly focus on the curvature perturbation generated at the end of multi-field inflation, such as the multi-brid inflation. Since the curvature perturbation is produced on the super-horizon scale, the bispectrum and trispectrum have a local shape. The size of bispectrum is measured by $f_{NL}$ and the trispectrum is characterized by two parameters $\\tau_{NL}$ and $g_{NL}$. For simplicity, the trajectory of inflaton is assumed to be a straight line in the field space and then the entropic perturbations do not contribute to the curvature perturbation during inflation. As long as"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0904.2649","kind":"arxiv","version":3},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/0904.2649/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-04T17:26:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"etCNkrAmogNRsULXU1vLXG5rVi5ASyICTqDj10CDZp21m0bWsRxbZdT54h32Xtbu2M8yJx60ppUSsF9S7ADODA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-11T17:50:38.179870Z"},"content_sha256":"86d760d7c8b6e8297269982fb691f179b6744c1d8a10cc370edb025550a1e429","schema_version":"1.0","event_id":"sha256:86d760d7c8b6e8297269982fb691f179b6744c1d8a10cc370edb025550a1e429"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/QXL3JNGN4YKP3HIDY6U67U2GAL/bundle.json","state_url":"https://pith.science/pith/QXL3JNGN4YKP3HIDY6U67U2GAL/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/QXL3JNGN4YKP3HIDY6U67U2GAL/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":"2026-08-11T17:50:38Z","links":{"resolver":"https://pith.science/pith/QXL3JNGN4YKP3HIDY6U67U2GAL","bundle":"https://pith.science/pith/QXL3JNGN4YKP3HIDY6U67U2GAL/bundle.json","state":"https://pith.science/pith/QXL3JNGN4YKP3HIDY6U67U2GAL/state.json","well_known_bundle":"https://pith.science/.well-known/pith/QXL3JNGN4YKP3HIDY6U67U2GAL/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:QXL3JNGN4YKP3HIDY6U67U2GAL","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":"2fcec06568fcbe2d13df7e9c9d7014ec001a12d1840e69d3e91001b05b82bdf1","cross_cats_sorted":["gr-qc","hep-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2009-04-17T07:39:08Z","title_canon_sha256":"5d5586bded6bea08c566e8e3be1abdb864e2a48278c3ecf3a2197ccfbf084b02"},"schema_version":"1.0","source":{"id":"0904.2649","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0904.2649","created_at":"2026-07-04T17:26:25Z"},{"alias_kind":"arxiv_version","alias_value":"0904.2649v3","created_at":"2026-07-04T17:26:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0904.2649","created_at":"2026-07-04T17:26:25Z"},{"alias_kind":"pith_short_12","alias_value":"QXL3JNGN4YKP","created_at":"2026-07-04T17:26:25Z"},{"alias_kind":"pith_short_16","alias_value":"QXL3JNGN4YKP3HID","created_at":"2026-07-04T17:26:25Z"},{"alias_kind":"pith_short_8","alias_value":"QXL3JNGN","created_at":"2026-07-04T17:26:25Z"}],"graph_snapshots":[{"event_id":"sha256:86d760d7c8b6e8297269982fb691f179b6744c1d8a10cc370edb025550a1e429","target":"graph","created_at":"2026-07-04T17:26:25Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/0904.2649/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"In this paper we mainly focus on the curvature perturbation generated at the end of multi-field inflation, such as the multi-brid inflation. Since the curvature perturbation is produced on the super-horizon scale, the bispectrum and trispectrum have a local shape. The size of bispectrum is measured by $f_{NL}$ and the trispectrum is characterized by two parameters $\\tau_{NL}$ and $g_{NL}$. For simplicity, the trajectory of inflaton is assumed to be a straight line in the field space and then the entropic perturbations do not contribute to the curvature perturbation during inflation. As long as","authors_text":"Qing-Guo Huang","cross_cats":["gr-qc","hep-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2009-04-17T07:39:08Z","title":"A geometric description of the non-Gaussianity generated at the end of multi-field inflation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0904.2649","kind":"arxiv","version":3},"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:e4c460ed316a3024258ed4dc75ac3725f10d22747cf20dbd676bbd581317ca6c","target":"record","created_at":"2026-07-04T17:26:25Z","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":"2fcec06568fcbe2d13df7e9c9d7014ec001a12d1840e69d3e91001b05b82bdf1","cross_cats_sorted":["gr-qc","hep-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2009-04-17T07:39:08Z","title_canon_sha256":"5d5586bded6bea08c566e8e3be1abdb864e2a48278c3ecf3a2197ccfbf084b02"},"schema_version":"1.0","source":{"id":"0904.2649","kind":"arxiv","version":3}},"canonical_sha256":"85d7b4b4cde614fd9d03c7a9efd34602f0ef5300c96f080913bb5c915a8a0d85","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"85d7b4b4cde614fd9d03c7a9efd34602f0ef5300c96f080913bb5c915a8a0d85","first_computed_at":"2026-07-04T17:26:25.589030Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T17:26:25.589030Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"suXXSVDQstW3+KTKQnNT/o3ormf22kg1rjZY5V+2jV8delsPhfACFdvavXqZTa+eXfqTSeqm9Y+bNKrDhzQTBQ==","signature_status":"signed_v1","signed_at":"2026-07-04T17:26:25.589471Z","signed_message":"canonical_sha256_bytes"},"source_id":"0904.2649","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e4c460ed316a3024258ed4dc75ac3725f10d22747cf20dbd676bbd581317ca6c","sha256:86d760d7c8b6e8297269982fb691f179b6744c1d8a10cc370edb025550a1e429"],"state_sha256":"e0a43583ae8a20df92018dea047b22d1f9c4a4f59d903d5bffe14fb1fde286b0"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8nxiYe9QJX+gQItJBjsyXRI7EgQAHMEgzJtTpIW5Xw49E8pp+BDG8X4ke5ThjqMBCfZZ8GQdUVzUv0MFThyGBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-11T17:50:38.184979Z","bundle_sha256":"0ffa3f3d342f50cc90a780546e239cf9269a9fb99538e2d67db59708cab9f20b"}}