{"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"}