{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:MYK2VHELSJTSTEOTA74MMCH62I","short_pith_number":"pith:MYK2VHEL","canonical_record":{"source":{"id":"1405.6264","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2014-05-24T03:50:44Z","cross_cats_sorted":[],"title_canon_sha256":"6bae9f5ed6c22206d6b60bc1aa15daad2ae68de27fdb735f8c2067e081a67dbf","abstract_canon_sha256":"e963e4483421a084d7c8a4ab7729283c472704466d2d547b8a7c48b28c75ea7d"},"schema_version":"1.0"},"canonical_sha256":"6615aa9c8b92672991d307f8c608fed212ea32e320e24316c3d683e07db96b2f","source":{"kind":"arxiv","id":"1405.6264","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1405.6264","created_at":"2026-05-18T02:39:38Z"},{"alias_kind":"arxiv_version","alias_value":"1405.6264v1","created_at":"2026-05-18T02:39:38Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1405.6264","created_at":"2026-05-18T02:39:38Z"},{"alias_kind":"pith_short_12","alias_value":"MYK2VHELSJTS","created_at":"2026-05-18T12:28:38Z"},{"alias_kind":"pith_short_16","alias_value":"MYK2VHELSJTSTEOT","created_at":"2026-05-18T12:28:38Z"},{"alias_kind":"pith_short_8","alias_value":"MYK2VHEL","created_at":"2026-05-18T12:28:38Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:MYK2VHELSJTSTEOTA74MMCH62I","target":"record","payload":{"canonical_record":{"source":{"id":"1405.6264","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2014-05-24T03:50:44Z","cross_cats_sorted":[],"title_canon_sha256":"6bae9f5ed6c22206d6b60bc1aa15daad2ae68de27fdb735f8c2067e081a67dbf","abstract_canon_sha256":"e963e4483421a084d7c8a4ab7729283c472704466d2d547b8a7c48b28c75ea7d"},"schema_version":"1.0"},"canonical_sha256":"6615aa9c8b92672991d307f8c608fed212ea32e320e24316c3d683e07db96b2f","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:39:38.911950Z","signature_b64":"SPDPOjCiQNCNf69UNCbcGDUff9JP0MgQ8+mVDiBFZ4Le50bXY3Yz51uqCIwYcBjzSS76uog2gLyUEvwP6MGwCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6615aa9c8b92672991d307f8c608fed212ea32e320e24316c3d683e07db96b2f","last_reissued_at":"2026-05-18T02:39:38.911561Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:39:38.911561Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1405.6264","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T02:39:38Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"EGzLV3x4W8HrIbyg94GAW7h5L/CVb3IS7NfwdL4y/QPM+8ds6rGf/oBny40euYAYVZlsL7zce5/CyKhYtUYGBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T12:40:22.138169Z"},"content_sha256":"e02b0516727382bd350ec9c478077cb271ce945bb4e047bc8a85754b3eebaa34","schema_version":"1.0","event_id":"sha256:e02b0516727382bd350ec9c478077cb271ce945bb4e047bc8a85754b3eebaa34"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:MYK2VHELSJTSTEOTA74MMCH62I","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"$\\phi^2$ Inflation at its Endpoint","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"Diana L\\'opez Nacir, Gabriele Trevisan, Marko Simonovi\\'c, Matias Zaldarriaga, Paolo Creminelli","submitted_at":"2014-05-24T03:50:44Z","abstract_excerpt":"In the simplest inflationary model $V=\\frac12 m^2\\phi^2$, we provide a prediction accurate up to $1\\%$ for the spectral index $n_s$ and the tensor-to-scalar ratio $r$ assuming instantaneous reheating and a standard thermal history: $n_s = 0.9668\\pm0.0003$ and $r=0.131\\pm 0.001$. This represents the simplest and most informative point in the $(n_s,r)$ plane. The result is independent of the details of reheating (or preheating) provided the conversion to radiation is sufficiently fast. A slower reheating or a modified post-inflationary evolution push towards smaller $n_s$ (and larger $r$), so th"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1405.6264","kind":"arxiv","version":1},"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":"2026-05-18T02:39:38Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Aula7zvINixG/7aIh3XAXIS1dIk1EScaSYlMHnVwaLYSwQrJIKKb1cQYfnEUWssRlyM+Cc1brIATq/aX3zS5Cw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T12:40:22.138554Z"},"content_sha256":"b4a428d35abfaf70fe87794d384222e04bb440037ef7c8abf7b34dca8f2c4fee","schema_version":"1.0","event_id":"sha256:b4a428d35abfaf70fe87794d384222e04bb440037ef7c8abf7b34dca8f2c4fee"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/MYK2VHELSJTSTEOTA74MMCH62I/bundle.json","state_url":"https://pith.science/pith/MYK2VHELSJTSTEOTA74MMCH62I/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/MYK2VHELSJTSTEOTA74MMCH62I/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":"2026-05-25T12:40:22Z","links":{"resolver":"https://pith.science/pith/MYK2VHELSJTSTEOTA74MMCH62I","bundle":"https://pith.science/pith/MYK2VHELSJTSTEOTA74MMCH62I/bundle.json","state":"https://pith.science/pith/MYK2VHELSJTSTEOTA74MMCH62I/state.json","well_known_bundle":"https://pith.science/.well-known/pith/MYK2VHELSJTSTEOTA74MMCH62I/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:MYK2VHELSJTSTEOTA74MMCH62I","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":"e963e4483421a084d7c8a4ab7729283c472704466d2d547b8a7c48b28c75ea7d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2014-05-24T03:50:44Z","title_canon_sha256":"6bae9f5ed6c22206d6b60bc1aa15daad2ae68de27fdb735f8c2067e081a67dbf"},"schema_version":"1.0","source":{"id":"1405.6264","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1405.6264","created_at":"2026-05-18T02:39:38Z"},{"alias_kind":"arxiv_version","alias_value":"1405.6264v1","created_at":"2026-05-18T02:39:38Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1405.6264","created_at":"2026-05-18T02:39:38Z"},{"alias_kind":"pith_short_12","alias_value":"MYK2VHELSJTS","created_at":"2026-05-18T12:28:38Z"},{"alias_kind":"pith_short_16","alias_value":"MYK2VHELSJTSTEOT","created_at":"2026-05-18T12:28:38Z"},{"alias_kind":"pith_short_8","alias_value":"MYK2VHEL","created_at":"2026-05-18T12:28:38Z"}],"graph_snapshots":[{"event_id":"sha256:b4a428d35abfaf70fe87794d384222e04bb440037ef7c8abf7b34dca8f2c4fee","target":"graph","created_at":"2026-05-18T02:39:38Z","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":"In the simplest inflationary model $V=\\frac12 m^2\\phi^2$, we provide a prediction accurate up to $1\\%$ for the spectral index $n_s$ and the tensor-to-scalar ratio $r$ assuming instantaneous reheating and a standard thermal history: $n_s = 0.9668\\pm0.0003$ and $r=0.131\\pm 0.001$. This represents the simplest and most informative point in the $(n_s,r)$ plane. The result is independent of the details of reheating (or preheating) provided the conversion to radiation is sufficiently fast. A slower reheating or a modified post-inflationary evolution push towards smaller $n_s$ (and larger $r$), so th","authors_text":"Diana L\\'opez Nacir, Gabriele Trevisan, Marko Simonovi\\'c, Matias Zaldarriaga, Paolo Creminelli","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2014-05-24T03:50:44Z","title":"$\\phi^2$ Inflation at its Endpoint"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1405.6264","kind":"arxiv","version":1},"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:e02b0516727382bd350ec9c478077cb271ce945bb4e047bc8a85754b3eebaa34","target":"record","created_at":"2026-05-18T02:39:38Z","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":"e963e4483421a084d7c8a4ab7729283c472704466d2d547b8a7c48b28c75ea7d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2014-05-24T03:50:44Z","title_canon_sha256":"6bae9f5ed6c22206d6b60bc1aa15daad2ae68de27fdb735f8c2067e081a67dbf"},"schema_version":"1.0","source":{"id":"1405.6264","kind":"arxiv","version":1}},"canonical_sha256":"6615aa9c8b92672991d307f8c608fed212ea32e320e24316c3d683e07db96b2f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6615aa9c8b92672991d307f8c608fed212ea32e320e24316c3d683e07db96b2f","first_computed_at":"2026-05-18T02:39:38.911561Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:39:38.911561Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"SPDPOjCiQNCNf69UNCbcGDUff9JP0MgQ8+mVDiBFZ4Le50bXY3Yz51uqCIwYcBjzSS76uog2gLyUEvwP6MGwCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T02:39:38.911950Z","signed_message":"canonical_sha256_bytes"},"source_id":"1405.6264","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e02b0516727382bd350ec9c478077cb271ce945bb4e047bc8a85754b3eebaa34","sha256:b4a428d35abfaf70fe87794d384222e04bb440037ef7c8abf7b34dca8f2c4fee"],"state_sha256":"0247b1ed7dcf246416e633533746456b179101c19e6ec8da5939665b85c069a9"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"rLJHhZwbJV5nfOQ9KoWaindcW/Vr2NtifYa+koioKkeOb3HP7+QvWfI75pJWIWvDhEA6yhzw4Y3dJb+jJQXVBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T12:40:22.141898Z","bundle_sha256":"44c79a06fdd634bf6884c252de8bfe94d1a83a1860f91cf405bb8dd013a2f77a"}}