{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:DQXYS6PLLHAJSISAMCIW2T4JVU","short_pith_number":"pith:DQXYS6PL","canonical_record":{"source":{"id":"1311.4664","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2013-11-19T09:21:42Z","cross_cats_sorted":[],"title_canon_sha256":"db37bacd4a58df55e7e95dee44bf7d93f54af8086111fc73a2652914931349a7","abstract_canon_sha256":"43e2afda6dac9edef429652f56fe252a8f9c4f223132d3b5a9a69f1741d294fd"},"schema_version":"1.0"},"canonical_sha256":"1c2f8979eb59c099224060916d4f89ad041cc355d6f7494ed3441df56a04caaa","source":{"kind":"arxiv","id":"1311.4664","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1311.4664","created_at":"2026-05-18T01:46:23Z"},{"alias_kind":"arxiv_version","alias_value":"1311.4664v2","created_at":"2026-05-18T01:46:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1311.4664","created_at":"2026-05-18T01:46:23Z"},{"alias_kind":"pith_short_12","alias_value":"DQXYS6PLLHAJ","created_at":"2026-05-18T12:27:43Z"},{"alias_kind":"pith_short_16","alias_value":"DQXYS6PLLHAJSISA","created_at":"2026-05-18T12:27:43Z"},{"alias_kind":"pith_short_8","alias_value":"DQXYS6PL","created_at":"2026-05-18T12:27:43Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:DQXYS6PLLHAJSISAMCIW2T4JVU","target":"record","payload":{"canonical_record":{"source":{"id":"1311.4664","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2013-11-19T09:21:42Z","cross_cats_sorted":[],"title_canon_sha256":"db37bacd4a58df55e7e95dee44bf7d93f54af8086111fc73a2652914931349a7","abstract_canon_sha256":"43e2afda6dac9edef429652f56fe252a8f9c4f223132d3b5a9a69f1741d294fd"},"schema_version":"1.0"},"canonical_sha256":"1c2f8979eb59c099224060916d4f89ad041cc355d6f7494ed3441df56a04caaa","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:46:23.205524Z","signature_b64":"EyAfyo6M/pBuphAOhR6jbvI2cgIz3RbydhhEV9FNW4M4xVNyY+gJlYUSqC0yjPx6rVNClSXFcmBu93WxySd5DA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"1c2f8979eb59c099224060916d4f89ad041cc355d6f7494ed3441df56a04caaa","last_reissued_at":"2026-05-18T01:46:23.205075Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:46:23.205075Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1311.4664","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":"2026-05-18T01:46:23Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"33vmVIVF78aCcld/sW+8SSTkDzOLzTRKxPGFKwwUxE/VDastaDv/kwwjcPKzsb4T7IyvK1SIWAJUmAyn1rGOCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-20T21:56:12.445032Z"},"content_sha256":"2636805c5612847fa60d9644da86c23e213a188f095c2fa02d94d7c61c498c25","schema_version":"1.0","event_id":"sha256:2636805c5612847fa60d9644da86c23e213a188f095c2fa02d94d7c61c498c25"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:DQXYS6PLLHAJSISAMCIW2T4JVU","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Observational constraints on tachyon and DBI inflation","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"Andrew R Liddle, Sheng Li","submitted_at":"2013-11-19T09:21:42Z","abstract_excerpt":"We present a systematic method for evaluation of perturbation observables in non-canonical single-field inflation models within the slow-roll approximation, which allied with field redefinitions enables predictions to be established for a wide range of models. We use this to investigate various non-canonical inflation models, including Tachyon inflation and DBI inflation. The Lambert $W$ function will be used extensively in our method for the evaluation of observables. In the Tachyon case, in the slow-roll approximation the model can be approximated by a canonical field with a redefined potent"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1311.4664","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":""},"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":"2026-05-18T01:46:23Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"PQVLu6XvsWUnYo0DHD9R54IWkOZbxrl5XA2c5PfaE/TNIrCrooiSW99WiqtwEKfSnRuPZqmj8X2+Dq4tVMLHBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-20T21:56:12.445712Z"},"content_sha256":"24f005d0d6ee38b5932c36d8567d8bfae90521e632989385215a300ad5b7a2d9","schema_version":"1.0","event_id":"sha256:24f005d0d6ee38b5932c36d8567d8bfae90521e632989385215a300ad5b7a2d9"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/DQXYS6PLLHAJSISAMCIW2T4JVU/bundle.json","state_url":"https://pith.science/pith/DQXYS6PLLHAJSISAMCIW2T4JVU/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/DQXYS6PLLHAJSISAMCIW2T4JVU/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":"2026-05-20T21:56:12Z","links":{"resolver":"https://pith.science/pith/DQXYS6PLLHAJSISAMCIW2T4JVU","bundle":"https://pith.science/pith/DQXYS6PLLHAJSISAMCIW2T4JVU/bundle.json","state":"https://pith.science/pith/DQXYS6PLLHAJSISAMCIW2T4JVU/state.json","well_known_bundle":"https://pith.science/.well-known/pith/DQXYS6PLLHAJSISAMCIW2T4JVU/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:DQXYS6PLLHAJSISAMCIW2T4JVU","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":"43e2afda6dac9edef429652f56fe252a8f9c4f223132d3b5a9a69f1741d294fd","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2013-11-19T09:21:42Z","title_canon_sha256":"db37bacd4a58df55e7e95dee44bf7d93f54af8086111fc73a2652914931349a7"},"schema_version":"1.0","source":{"id":"1311.4664","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1311.4664","created_at":"2026-05-18T01:46:23Z"},{"alias_kind":"arxiv_version","alias_value":"1311.4664v2","created_at":"2026-05-18T01:46:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1311.4664","created_at":"2026-05-18T01:46:23Z"},{"alias_kind":"pith_short_12","alias_value":"DQXYS6PLLHAJ","created_at":"2026-05-18T12:27:43Z"},{"alias_kind":"pith_short_16","alias_value":"DQXYS6PLLHAJSISA","created_at":"2026-05-18T12:27:43Z"},{"alias_kind":"pith_short_8","alias_value":"DQXYS6PL","created_at":"2026-05-18T12:27:43Z"}],"graph_snapshots":[{"event_id":"sha256:24f005d0d6ee38b5932c36d8567d8bfae90521e632989385215a300ad5b7a2d9","target":"graph","created_at":"2026-05-18T01:46:23Z","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":"We present a systematic method for evaluation of perturbation observables in non-canonical single-field inflation models within the slow-roll approximation, which allied with field redefinitions enables predictions to be established for a wide range of models. We use this to investigate various non-canonical inflation models, including Tachyon inflation and DBI inflation. The Lambert $W$ function will be used extensively in our method for the evaluation of observables. In the Tachyon case, in the slow-roll approximation the model can be approximated by a canonical field with a redefined potent","authors_text":"Andrew R Liddle, Sheng Li","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2013-11-19T09:21:42Z","title":"Observational constraints on tachyon and DBI inflation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1311.4664","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":"sha256:2636805c5612847fa60d9644da86c23e213a188f095c2fa02d94d7c61c498c25","target":"record","created_at":"2026-05-18T01:46:23Z","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":"43e2afda6dac9edef429652f56fe252a8f9c4f223132d3b5a9a69f1741d294fd","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2013-11-19T09:21:42Z","title_canon_sha256":"db37bacd4a58df55e7e95dee44bf7d93f54af8086111fc73a2652914931349a7"},"schema_version":"1.0","source":{"id":"1311.4664","kind":"arxiv","version":2}},"canonical_sha256":"1c2f8979eb59c099224060916d4f89ad041cc355d6f7494ed3441df56a04caaa","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"1c2f8979eb59c099224060916d4f89ad041cc355d6f7494ed3441df56a04caaa","first_computed_at":"2026-05-18T01:46:23.205075Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:46:23.205075Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"EyAfyo6M/pBuphAOhR6jbvI2cgIz3RbydhhEV9FNW4M4xVNyY+gJlYUSqC0yjPx6rVNClSXFcmBu93WxySd5DA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:46:23.205524Z","signed_message":"canonical_sha256_bytes"},"source_id":"1311.4664","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2636805c5612847fa60d9644da86c23e213a188f095c2fa02d94d7c61c498c25","sha256:24f005d0d6ee38b5932c36d8567d8bfae90521e632989385215a300ad5b7a2d9"],"state_sha256":"fcb22a73ae412d012f79878a11ccb5c8cb57bed3252f4d67873300d05a9c7f41"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/ITFunjgZXPkJIMjpp7YL2aWaYXfm6RpmtqEqvn9kz3ecADlUjLoftIfu43aZE6qgL0iSdzg5XLnd6k4sYVIAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-20T21:56:12.449670Z","bundle_sha256":"81d21a32cd6bab36d26455c7c281f2bcd11bb663414dcd2038f07f921b52f220"}}