{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2009:Z53DO5JJ4S6XLVNUYP6TOOLVYX","short_pith_number":"pith:Z53DO5JJ","canonical_record":{"source":{"id":"0910.4986","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2009-10-27T13:15:11Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"0476f0205fa0c33de78830bf1ea44d30146e45cc0a1d8c5e82ee1d53a2645625","abstract_canon_sha256":"78a5bda7010294fc49a35e782bc267853711e9ed5428863451df468802353762"},"schema_version":"1.0"},"canonical_sha256":"cf76377529e4bd75d5b4c3fd373975c5caff7274de2c642c62f802d42b1fd464","source":{"kind":"arxiv","id":"0910.4986","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0910.4986","created_at":"2026-07-04T17:21:18Z"},{"alias_kind":"arxiv_version","alias_value":"0910.4986v2","created_at":"2026-07-04T17:21:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0910.4986","created_at":"2026-07-04T17:21:18Z"},{"alias_kind":"pith_short_12","alias_value":"Z53DO5JJ4S6X","created_at":"2026-07-04T17:21:18Z"},{"alias_kind":"pith_short_16","alias_value":"Z53DO5JJ4S6XLVNU","created_at":"2026-07-04T17:21:18Z"},{"alias_kind":"pith_short_8","alias_value":"Z53DO5JJ","created_at":"2026-07-04T17:21:18Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2009:Z53DO5JJ4S6XLVNUYP6TOOLVYX","target":"record","payload":{"canonical_record":{"source":{"id":"0910.4986","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2009-10-27T13:15:11Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"0476f0205fa0c33de78830bf1ea44d30146e45cc0a1d8c5e82ee1d53a2645625","abstract_canon_sha256":"78a5bda7010294fc49a35e782bc267853711e9ed5428863451df468802353762"},"schema_version":"1.0"},"canonical_sha256":"cf76377529e4bd75d5b4c3fd373975c5caff7274de2c642c62f802d42b1fd464","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T17:21:18.253107Z","signature_b64":"bPAZS9DPbRdohw8ymG0RzpRSDShF7vWPeWe3dJkMJeS1k1EWCHbz2QcNhxCqOYhJNYxRFnSLz27bN4CV1XaCAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"cf76377529e4bd75d5b4c3fd373975c5caff7274de2c642c62f802d42b1fd464","last_reissued_at":"2026-07-04T17:21:18.252631Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T17:21:18.252631Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0910.4986","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-04T17:21:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+/zeuuOUknZQCNrChNzGPMWCDxXzwkn1cQfkYabYFxrDPVfSHT+7s8ElyLjbcDqR85d2rTO47SSht0TVAu45Ag==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T04:33:14.489043Z"},"content_sha256":"eec22eb086e3924db3c488ff406e90bf1621cb01863a981061fe025b2c62fe3b","schema_version":"1.0","event_id":"sha256:eec22eb086e3924db3c488ff406e90bf1621cb01863a981061fe025b2c62fe3b"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2009:Z53DO5JJ4S6XLVNUYP6TOOLVYX","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Bispectrum signatures of a modified vacuum in single field inflation with a small speed of sound","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO"],"primary_cat":"hep-th","authors_text":"Jan Pieter van der Schaar, Mark G. Jackson, P. Daniel Meerburg","submitted_at":"2009-10-27T13:15:11Z","abstract_excerpt":"Deviations from the Bunch-Davies vacuum during an inflationary period can leave a testable imprint on the higher-order correlations of the CMB and large scale structures in the Universe. The effect is particularly pronounced if the statistical non-Gaussianity is inherently large, such as in models of inflation with a small speed of sound, e.g. DBI. First reviewing the motivations for a modified vacuum, we calculate the non-Gaussianity for a general action with a small speed of sound. The shape of its bispectrum is found to most resemble the 'orthogonal' or 'local' templates depending on the ph"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0910.4986","kind":"arxiv","version":2},"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/0910.4986/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":"2026-07-04T17:21:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hgt2jsM8XPJruX/aQ9AJ21govJEO2wne1O9FcpbDXO67E6yaWrveBjfHKH6vPuKg7pDslX/bvJ5qm0xUwZN9Aw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T04:33:14.489622Z"},"content_sha256":"3d7debe1beb2b6b37f31aeeba3c9819e7c6198d6df1305f920b418a272fea2c3","schema_version":"1.0","event_id":"sha256:3d7debe1beb2b6b37f31aeeba3c9819e7c6198d6df1305f920b418a272fea2c3"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/Z53DO5JJ4S6XLVNUYP6TOOLVYX/bundle.json","state_url":"https://pith.science/pith/Z53DO5JJ4S6XLVNUYP6TOOLVYX/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/Z53DO5JJ4S6XLVNUYP6TOOLVYX/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":"2026-08-06T04:33:14Z","links":{"resolver":"https://pith.science/pith/Z53DO5JJ4S6XLVNUYP6TOOLVYX","bundle":"https://pith.science/pith/Z53DO5JJ4S6XLVNUYP6TOOLVYX/bundle.json","state":"https://pith.science/pith/Z53DO5JJ4S6XLVNUYP6TOOLVYX/state.json","well_known_bundle":"https://pith.science/.well-known/pith/Z53DO5JJ4S6XLVNUYP6TOOLVYX/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:Z53DO5JJ4S6XLVNUYP6TOOLVYX","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":"78a5bda7010294fc49a35e782bc267853711e9ed5428863451df468802353762","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2009-10-27T13:15:11Z","title_canon_sha256":"0476f0205fa0c33de78830bf1ea44d30146e45cc0a1d8c5e82ee1d53a2645625"},"schema_version":"1.0","source":{"id":"0910.4986","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0910.4986","created_at":"2026-07-04T17:21:18Z"},{"alias_kind":"arxiv_version","alias_value":"0910.4986v2","created_at":"2026-07-04T17:21:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0910.4986","created_at":"2026-07-04T17:21:18Z"},{"alias_kind":"pith_short_12","alias_value":"Z53DO5JJ4S6X","created_at":"2026-07-04T17:21:18Z"},{"alias_kind":"pith_short_16","alias_value":"Z53DO5JJ4S6XLVNU","created_at":"2026-07-04T17:21:18Z"},{"alias_kind":"pith_short_8","alias_value":"Z53DO5JJ","created_at":"2026-07-04T17:21:18Z"}],"graph_snapshots":[{"event_id":"sha256:3d7debe1beb2b6b37f31aeeba3c9819e7c6198d6df1305f920b418a272fea2c3","target":"graph","created_at":"2026-07-04T17:21:18Z","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/0910.4986/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Deviations from the Bunch-Davies vacuum during an inflationary period can leave a testable imprint on the higher-order correlations of the CMB and large scale structures in the Universe. The effect is particularly pronounced if the statistical non-Gaussianity is inherently large, such as in models of inflation with a small speed of sound, e.g. DBI. First reviewing the motivations for a modified vacuum, we calculate the non-Gaussianity for a general action with a small speed of sound. The shape of its bispectrum is found to most resemble the 'orthogonal' or 'local' templates depending on the ph","authors_text":"Jan Pieter van der Schaar, Mark G. Jackson, P. Daniel Meerburg","cross_cats":["astro-ph.CO"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2009-10-27T13:15:11Z","title":"Bispectrum signatures of a modified vacuum in single field inflation with a small speed of sound"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0910.4986","kind":"arxiv","version":2},"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:eec22eb086e3924db3c488ff406e90bf1621cb01863a981061fe025b2c62fe3b","target":"record","created_at":"2026-07-04T17:21:18Z","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":"78a5bda7010294fc49a35e782bc267853711e9ed5428863451df468802353762","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2009-10-27T13:15:11Z","title_canon_sha256":"0476f0205fa0c33de78830bf1ea44d30146e45cc0a1d8c5e82ee1d53a2645625"},"schema_version":"1.0","source":{"id":"0910.4986","kind":"arxiv","version":2}},"canonical_sha256":"cf76377529e4bd75d5b4c3fd373975c5caff7274de2c642c62f802d42b1fd464","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"cf76377529e4bd75d5b4c3fd373975c5caff7274de2c642c62f802d42b1fd464","first_computed_at":"2026-07-04T17:21:18.252631Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T17:21:18.252631Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"bPAZS9DPbRdohw8ymG0RzpRSDShF7vWPeWe3dJkMJeS1k1EWCHbz2QcNhxCqOYhJNYxRFnSLz27bN4CV1XaCAQ==","signature_status":"signed_v1","signed_at":"2026-07-04T17:21:18.253107Z","signed_message":"canonical_sha256_bytes"},"source_id":"0910.4986","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:eec22eb086e3924db3c488ff406e90bf1621cb01863a981061fe025b2c62fe3b","sha256:3d7debe1beb2b6b37f31aeeba3c9819e7c6198d6df1305f920b418a272fea2c3"],"state_sha256":"4bbae466177c567d3421d48a95d17a1acbd54d6df5056710480d4a0f875e324f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/I4+fPNBmOtGCKq3jTO1jRIfEjqxO4Z2kuISl+KOwnEECF3CM4AqN4zjlNNVxyOzacOAG8yDGLFW40SRL7aKDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-06T04:33:14.494541Z","bundle_sha256":"19a668aaed979d9f33cc5fb9701772156b7204536c02e8048e5693b5bc962237"}}