{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:AE3SPT37JZJDSJYNXWR33OXGAF","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":"d811fcfda4527e0b2c54350610439ac661216230fda002e1bef3fc1ace4074b2","cross_cats_sorted":["astro-ph.CO","gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2009-05-28T14:00:25Z","title_canon_sha256":"ec2be3a003d9a837275ed3f77d397faa318272b9fd8e0780284965b0282e587c"},"schema_version":"1.0","source":{"id":"0905.4557","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0905.4557","created_at":"2026-07-04T15:48:47Z"},{"alias_kind":"arxiv_version","alias_value":"0905.4557v2","created_at":"2026-07-04T15:48:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0905.4557","created_at":"2026-07-04T15:48:47Z"},{"alias_kind":"pith_short_12","alias_value":"AE3SPT37JZJD","created_at":"2026-07-04T15:48:47Z"},{"alias_kind":"pith_short_16","alias_value":"AE3SPT37JZJDSJYN","created_at":"2026-07-04T15:48:47Z"},{"alias_kind":"pith_short_8","alias_value":"AE3SPT37","created_at":"2026-07-04T15:48:47Z"}],"graph_snapshots":[{"event_id":"sha256:1905b7196ad4f3842d31bfaab2cbb7ee748a1ac9b3c3f5ef76c56af9a78e659b","target":"graph","created_at":"2026-07-04T15:48:47Z","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/0905.4557/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We show that higher-order actions for cosmological perturbations in the multi-field DBI-inflation model are obtained by a Lorentz boost from the rest frame of the brane to the frame where the brane is moving. We confirm that this simple method provides the same third- and fourth- order actions at leading order in slow-roll and in the small sound speed limit as those obtained by the usual ADM formalism. As an application, we compute the leading order connected four-point function of the primordial curvature perturbation coming from the intrinsic fourth-order contact interaction in the multi-fie","authors_text":"Frederico Arroja, Kazuya Koyama, Shuntaro Mizuno, Takahiro Tanaka","cross_cats":["astro-ph.CO","gr-qc"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2009-05-28T14:00:25Z","title":"Lorentz boost and non-Gaussianity in multi-field DBI-inflation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0905.4557","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":"sha256:6add206cb315bceacb6e9b5c61199a499bd915d8639b39fdb14a4ece799f945a","target":"record","created_at":"2026-07-04T15:48:47Z","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":"d811fcfda4527e0b2c54350610439ac661216230fda002e1bef3fc1ace4074b2","cross_cats_sorted":["astro-ph.CO","gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2009-05-28T14:00:25Z","title_canon_sha256":"ec2be3a003d9a837275ed3f77d397faa318272b9fd8e0780284965b0282e587c"},"schema_version":"1.0","source":{"id":"0905.4557","kind":"arxiv","version":2}},"canonical_sha256":"013727cf7f4e5239270dbda3bdbae601725e39017ab9be2edc94168715d46cc9","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"013727cf7f4e5239270dbda3bdbae601725e39017ab9be2edc94168715d46cc9","first_computed_at":"2026-07-04T15:48:47.723744Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T15:48:47.723744Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"x8Pk2WQUu2MxC9t2XINpq5KcaI4Rz0HkabSaqTbOFw47VSAmPvagnfHtqe3rXHdmDNcUrTHyV44zYNIbJzHRCA==","signature_status":"signed_v1","signed_at":"2026-07-04T15:48:47.724204Z","signed_message":"canonical_sha256_bytes"},"source_id":"0905.4557","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:6add206cb315bceacb6e9b5c61199a499bd915d8639b39fdb14a4ece799f945a","sha256:1905b7196ad4f3842d31bfaab2cbb7ee748a1ac9b3c3f5ef76c56af9a78e659b"],"state_sha256":"9798790432804357b3ade3f6d4b99b37a6b1a2e99630cda4cbf0c39bb60a1ae3"}