{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:EVYLXHFZNRHPQMKVWLTTCUFSZG","short_pith_number":"pith:EVYLXHFZ","canonical_record":{"source":{"id":"2011.12980","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2020-11-25T19:02:32Z","cross_cats_sorted":["astro-ph.CO","hep-ph"],"title_canon_sha256":"ae3e082595374e413e3d87cdcf974efd29cebb82df3bfe045fb67c2bdb0d451b","abstract_canon_sha256":"66bf930f703ed8905f4993fc01e18cc731cdf95a749032ed8f82ab588f56bd9e"},"schema_version":"1.0"},"canonical_sha256":"2570bb9cb96c4ef83155b2e73150b2c9929af501ec972c3fdafd310d405379c0","source":{"kind":"arxiv","id":"2011.12980","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2011.12980","created_at":"2026-07-05T02:15:36Z"},{"alias_kind":"arxiv_version","alias_value":"2011.12980v1","created_at":"2026-07-05T02:15:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2011.12980","created_at":"2026-07-05T02:15:36Z"},{"alias_kind":"pith_short_12","alias_value":"EVYLXHFZNRHP","created_at":"2026-07-05T02:15:36Z"},{"alias_kind":"pith_short_16","alias_value":"EVYLXHFZNRHPQMKV","created_at":"2026-07-05T02:15:36Z"},{"alias_kind":"pith_short_8","alias_value":"EVYLXHFZ","created_at":"2026-07-05T02:15:36Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:EVYLXHFZNRHPQMKVWLTTCUFSZG","target":"record","payload":{"canonical_record":{"source":{"id":"2011.12980","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2020-11-25T19:02:32Z","cross_cats_sorted":["astro-ph.CO","hep-ph"],"title_canon_sha256":"ae3e082595374e413e3d87cdcf974efd29cebb82df3bfe045fb67c2bdb0d451b","abstract_canon_sha256":"66bf930f703ed8905f4993fc01e18cc731cdf95a749032ed8f82ab588f56bd9e"},"schema_version":"1.0"},"canonical_sha256":"2570bb9cb96c4ef83155b2e73150b2c9929af501ec972c3fdafd310d405379c0","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T02:15:36.374689Z","signature_b64":"eZnXXOnzwbolqwsc4r4YIocz6SZb4n5dj3ehLHYffdUOYrvd3Ny9f5cVzVXChv00uvpZkAIYnsbRdtiArh5tDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2570bb9cb96c4ef83155b2e73150b2c9929af501ec972c3fdafd310d405379c0","last_reissued_at":"2026-07-05T02:15:36.374266Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T02:15:36.374266Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2011.12980","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":"2026-07-05T02:15:36Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"sq8GPMlPh0KXksHy5ETnJ9DXbEJTVbRsYCa10vFNFVNK16G9awTWbubGQhoKmVgjjFm/dd+YeTMLMNPGCYTFDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-01T13:47:42.579811Z"},"content_sha256":"f62c643aa6a6957ca17e59931476ee707f273b707297656b34894fd13d88d732","schema_version":"1.0","event_id":"sha256:f62c643aa6a6957ca17e59931476ee707f273b707297656b34894fd13d88d732"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:EVYLXHFZNRHPQMKVWLTTCUFSZG","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The Power Spectrum of Density Perturbations in Chain Inflation","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO","hep-ph"],"primary_cat":"hep-th","authors_text":"Katherine Freese, Martin Wolfgang Winkler","submitted_at":"2020-11-25T19:02:32Z","abstract_excerpt":"Chain Inflation is an alternative to slow roll inflation in which the universe undergoes a series of transitions between different vacua. The density perturbations (studied in this paper) are seeded by the probabilistic nature of tunneling rather than quantum fluctuations of the inflaton. We find the scalar power spectrum of chain inflation and show that it is fully consistent with a $\\Lambda$CDM cosmology. In agreement with some of the previous literature (and disagreement with others), we show that $10^4$ phase transitions per e-fold are required in order to agree with the amplitude of Cosmi"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2011.12980","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2011.12980/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":"2026-07-05T02:15:36Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3ogC8axDUUo3LkemkXS18ajpeSlIQDsmb+jo+99VLbxj9YIgWwM10z6XFF8/hz7ZtybBlZd80YgbhApo1S3iAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-01T13:47:42.580297Z"},"content_sha256":"138e21f4e2ece86195036f02b0ba3cf8c934d944d828a216f8deeaa86338fa49","schema_version":"1.0","event_id":"sha256:138e21f4e2ece86195036f02b0ba3cf8c934d944d828a216f8deeaa86338fa49"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/EVYLXHFZNRHPQMKVWLTTCUFSZG/bundle.json","state_url":"https://pith.science/pith/EVYLXHFZNRHPQMKVWLTTCUFSZG/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/EVYLXHFZNRHPQMKVWLTTCUFSZG/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":"2026-08-01T13:47:42Z","links":{"resolver":"https://pith.science/pith/EVYLXHFZNRHPQMKVWLTTCUFSZG","bundle":"https://pith.science/pith/EVYLXHFZNRHPQMKVWLTTCUFSZG/bundle.json","state":"https://pith.science/pith/EVYLXHFZNRHPQMKVWLTTCUFSZG/state.json","well_known_bundle":"https://pith.science/.well-known/pith/EVYLXHFZNRHPQMKVWLTTCUFSZG/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:EVYLXHFZNRHPQMKVWLTTCUFSZG","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":"66bf930f703ed8905f4993fc01e18cc731cdf95a749032ed8f82ab588f56bd9e","cross_cats_sorted":["astro-ph.CO","hep-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2020-11-25T19:02:32Z","title_canon_sha256":"ae3e082595374e413e3d87cdcf974efd29cebb82df3bfe045fb67c2bdb0d451b"},"schema_version":"1.0","source":{"id":"2011.12980","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2011.12980","created_at":"2026-07-05T02:15:36Z"},{"alias_kind":"arxiv_version","alias_value":"2011.12980v1","created_at":"2026-07-05T02:15:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2011.12980","created_at":"2026-07-05T02:15:36Z"},{"alias_kind":"pith_short_12","alias_value":"EVYLXHFZNRHP","created_at":"2026-07-05T02:15:36Z"},{"alias_kind":"pith_short_16","alias_value":"EVYLXHFZNRHPQMKV","created_at":"2026-07-05T02:15:36Z"},{"alias_kind":"pith_short_8","alias_value":"EVYLXHFZ","created_at":"2026-07-05T02:15:36Z"}],"graph_snapshots":[{"event_id":"sha256:138e21f4e2ece86195036f02b0ba3cf8c934d944d828a216f8deeaa86338fa49","target":"graph","created_at":"2026-07-05T02:15:36Z","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/2011.12980/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Chain Inflation is an alternative to slow roll inflation in which the universe undergoes a series of transitions between different vacua. The density perturbations (studied in this paper) are seeded by the probabilistic nature of tunneling rather than quantum fluctuations of the inflaton. We find the scalar power spectrum of chain inflation and show that it is fully consistent with a $\\Lambda$CDM cosmology. In agreement with some of the previous literature (and disagreement with others), we show that $10^4$ phase transitions per e-fold are required in order to agree with the amplitude of Cosmi","authors_text":"Katherine Freese, Martin Wolfgang Winkler","cross_cats":["astro-ph.CO","hep-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2020-11-25T19:02:32Z","title":"The Power Spectrum of Density Perturbations in Chain Inflation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2011.12980","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:f62c643aa6a6957ca17e59931476ee707f273b707297656b34894fd13d88d732","target":"record","created_at":"2026-07-05T02:15:36Z","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":"66bf930f703ed8905f4993fc01e18cc731cdf95a749032ed8f82ab588f56bd9e","cross_cats_sorted":["astro-ph.CO","hep-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2020-11-25T19:02:32Z","title_canon_sha256":"ae3e082595374e413e3d87cdcf974efd29cebb82df3bfe045fb67c2bdb0d451b"},"schema_version":"1.0","source":{"id":"2011.12980","kind":"arxiv","version":1}},"canonical_sha256":"2570bb9cb96c4ef83155b2e73150b2c9929af501ec972c3fdafd310d405379c0","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2570bb9cb96c4ef83155b2e73150b2c9929af501ec972c3fdafd310d405379c0","first_computed_at":"2026-07-05T02:15:36.374266Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T02:15:36.374266Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"eZnXXOnzwbolqwsc4r4YIocz6SZb4n5dj3ehLHYffdUOYrvd3Ny9f5cVzVXChv00uvpZkAIYnsbRdtiArh5tDw==","signature_status":"signed_v1","signed_at":"2026-07-05T02:15:36.374689Z","signed_message":"canonical_sha256_bytes"},"source_id":"2011.12980","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f62c643aa6a6957ca17e59931476ee707f273b707297656b34894fd13d88d732","sha256:138e21f4e2ece86195036f02b0ba3cf8c934d944d828a216f8deeaa86338fa49"],"state_sha256":"5c33de90b297df01bb0a8d76f6896afc9c2ec0d799937739fe0c71de7a3ebaf9"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ez2TK0he9enOPBgFlS4Qq3h0+Xakg26SQhIT7GbVvBLyx9v7Tt7GAyuKnGJU/UT6NQ2RfzNxKqO8yFmqPLLeCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-01T13:47:42.583924Z","bundle_sha256":"5ae3415713c5c397ae4265b3c1d82af8d65110c5bf47362c9f01aa29c0c672e6"}}