{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:DZGNRKPNFRY7WMR4JIZPO7DMLN","short_pith_number":"pith:DZGNRKPN","canonical_record":{"source":{"id":"1405.0346","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2014-05-02T05:27:09Z","cross_cats_sorted":["gr-qc","hep-ph","hep-th"],"title_canon_sha256":"dd4ad516241548106ad5d50aa97eab6d5adc622a8d5252e17804f5cd2638a0cb","abstract_canon_sha256":"c7cffd74fd57545e429a0da9f3f4b89953e560aea86dd66b90fbf92cca3cb6c8"},"schema_version":"1.0"},"canonical_sha256":"1e4cd8a9ed2c71fb323c4a32f77c6c5b58591b93a883cd6e3ca7ac5d75850f2e","source":{"kind":"arxiv","id":"1405.0346","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1405.0346","created_at":"2026-05-18T01:43:20Z"},{"alias_kind":"arxiv_version","alias_value":"1405.0346v2","created_at":"2026-05-18T01:43:20Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1405.0346","created_at":"2026-05-18T01:43:20Z"},{"alias_kind":"pith_short_12","alias_value":"DZGNRKPNFRY7","created_at":"2026-05-18T12:28:25Z"},{"alias_kind":"pith_short_16","alias_value":"DZGNRKPNFRY7WMR4","created_at":"2026-05-18T12:28:25Z"},{"alias_kind":"pith_short_8","alias_value":"DZGNRKPN","created_at":"2026-05-18T12:28:25Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:DZGNRKPNFRY7WMR4JIZPO7DMLN","target":"record","payload":{"canonical_record":{"source":{"id":"1405.0346","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2014-05-02T05:27:09Z","cross_cats_sorted":["gr-qc","hep-ph","hep-th"],"title_canon_sha256":"dd4ad516241548106ad5d50aa97eab6d5adc622a8d5252e17804f5cd2638a0cb","abstract_canon_sha256":"c7cffd74fd57545e429a0da9f3f4b89953e560aea86dd66b90fbf92cca3cb6c8"},"schema_version":"1.0"},"canonical_sha256":"1e4cd8a9ed2c71fb323c4a32f77c6c5b58591b93a883cd6e3ca7ac5d75850f2e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:43:20.724969Z","signature_b64":"QrjptbQVThJiu0eBxJN0UNacVbRkaN/avcY3Lej+diCqDRWqhx+kQ6f1C9c0KEGERIlak2hiktoHF1ewZDWSAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"1e4cd8a9ed2c71fb323c4a32f77c6c5b58591b93a883cd6e3ca7ac5d75850f2e","last_reissued_at":"2026-05-18T01:43:20.724084Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:43:20.724084Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1405.0346","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":"2026-05-18T01:43:20Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Y8FcCOQgSeNG75k09ePl+yI6sQ+b3rh50xekDtQDXv+k+jjag/rLAwcBi2NTaWdEt57QdWNAca0kn4hAFsmlBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T23:06:31.398418Z"},"content_sha256":"7644b245df9e6a9b5df5819ef5ce70130bd7077340866083ca42bfa0029ab453","schema_version":"1.0","event_id":"sha256:7644b245df9e6a9b5df5819ef5ce70130bd7077340866083ca42bfa0029ab453"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:DZGNRKPNFRY7WMR4JIZPO7DMLN","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Blue Tensor Spectrum from Particle Production during Inflation","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["gr-qc","hep-ph","hep-th"],"primary_cat":"astro-ph.CO","authors_text":"Gary Shiu, Marco Peloso, Ryo Namba, Shinji Mukohyama","submitted_at":"2014-05-02T05:27:09Z","abstract_excerpt":"We discuss a mechanism of particle production during inflation that can result in a blue gravitational wave (GW) spectrum, compatible with the BICEP2 result and with the r < 0.11 limit on the tensor-to-scalar ratio at the Planck pivot scale. The mechanism is based on the production of vector quanta from a rolling pseudo-scalar field. Both the vector and the pseudo-scalar are only gravitationally coupled to the inflaton, to keep the production of inflaton quanta at an unobservable level (the overproduction of non-gaussian scalar perturbations is a generic difficulty for mechanisms that aim to g"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1405.0346","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":"2026-05-18T01:43:20Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"dsnRy2exspOvwIEFY0A0gnHDWdrK0eRLljX67fTTq2NjA9OytvEtHJfKRMt+3tsz+6GplPnXfnepGw3goatbBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T23:06:31.398977Z"},"content_sha256":"bda458dd5d97adbe007edb34cfb2156c5dd37c83b5328eecf196c82d4962ac67","schema_version":"1.0","event_id":"sha256:bda458dd5d97adbe007edb34cfb2156c5dd37c83b5328eecf196c82d4962ac67"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/DZGNRKPNFRY7WMR4JIZPO7DMLN/bundle.json","state_url":"https://pith.science/pith/DZGNRKPNFRY7WMR4JIZPO7DMLN/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/DZGNRKPNFRY7WMR4JIZPO7DMLN/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":"2026-05-31T23:06:31Z","links":{"resolver":"https://pith.science/pith/DZGNRKPNFRY7WMR4JIZPO7DMLN","bundle":"https://pith.science/pith/DZGNRKPNFRY7WMR4JIZPO7DMLN/bundle.json","state":"https://pith.science/pith/DZGNRKPNFRY7WMR4JIZPO7DMLN/state.json","well_known_bundle":"https://pith.science/.well-known/pith/DZGNRKPNFRY7WMR4JIZPO7DMLN/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:DZGNRKPNFRY7WMR4JIZPO7DMLN","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":"c7cffd74fd57545e429a0da9f3f4b89953e560aea86dd66b90fbf92cca3cb6c8","cross_cats_sorted":["gr-qc","hep-ph","hep-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2014-05-02T05:27:09Z","title_canon_sha256":"dd4ad516241548106ad5d50aa97eab6d5adc622a8d5252e17804f5cd2638a0cb"},"schema_version":"1.0","source":{"id":"1405.0346","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1405.0346","created_at":"2026-05-18T01:43:20Z"},{"alias_kind":"arxiv_version","alias_value":"1405.0346v2","created_at":"2026-05-18T01:43:20Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1405.0346","created_at":"2026-05-18T01:43:20Z"},{"alias_kind":"pith_short_12","alias_value":"DZGNRKPNFRY7","created_at":"2026-05-18T12:28:25Z"},{"alias_kind":"pith_short_16","alias_value":"DZGNRKPNFRY7WMR4","created_at":"2026-05-18T12:28:25Z"},{"alias_kind":"pith_short_8","alias_value":"DZGNRKPN","created_at":"2026-05-18T12:28:25Z"}],"graph_snapshots":[{"event_id":"sha256:bda458dd5d97adbe007edb34cfb2156c5dd37c83b5328eecf196c82d4962ac67","target":"graph","created_at":"2026-05-18T01:43:20Z","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 discuss a mechanism of particle production during inflation that can result in a blue gravitational wave (GW) spectrum, compatible with the BICEP2 result and with the r < 0.11 limit on the tensor-to-scalar ratio at the Planck pivot scale. The mechanism is based on the production of vector quanta from a rolling pseudo-scalar field. Both the vector and the pseudo-scalar are only gravitationally coupled to the inflaton, to keep the production of inflaton quanta at an unobservable level (the overproduction of non-gaussian scalar perturbations is a generic difficulty for mechanisms that aim to g","authors_text":"Gary Shiu, Marco Peloso, Ryo Namba, Shinji Mukohyama","cross_cats":["gr-qc","hep-ph","hep-th"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2014-05-02T05:27:09Z","title":"Blue Tensor Spectrum from Particle Production during Inflation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1405.0346","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":"sha256:7644b245df9e6a9b5df5819ef5ce70130bd7077340866083ca42bfa0029ab453","target":"record","created_at":"2026-05-18T01:43:20Z","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":"c7cffd74fd57545e429a0da9f3f4b89953e560aea86dd66b90fbf92cca3cb6c8","cross_cats_sorted":["gr-qc","hep-ph","hep-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2014-05-02T05:27:09Z","title_canon_sha256":"dd4ad516241548106ad5d50aa97eab6d5adc622a8d5252e17804f5cd2638a0cb"},"schema_version":"1.0","source":{"id":"1405.0346","kind":"arxiv","version":2}},"canonical_sha256":"1e4cd8a9ed2c71fb323c4a32f77c6c5b58591b93a883cd6e3ca7ac5d75850f2e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"1e4cd8a9ed2c71fb323c4a32f77c6c5b58591b93a883cd6e3ca7ac5d75850f2e","first_computed_at":"2026-05-18T01:43:20.724084Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:43:20.724084Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"QrjptbQVThJiu0eBxJN0UNacVbRkaN/avcY3Lej+diCqDRWqhx+kQ6f1C9c0KEGERIlak2hiktoHF1ewZDWSAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:43:20.724969Z","signed_message":"canonical_sha256_bytes"},"source_id":"1405.0346","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:7644b245df9e6a9b5df5819ef5ce70130bd7077340866083ca42bfa0029ab453","sha256:bda458dd5d97adbe007edb34cfb2156c5dd37c83b5328eecf196c82d4962ac67"],"state_sha256":"c9fcc1abbcf6442ba8e2aa54512a1b0e8b803dda87d2b36b30959af192b6791e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"0gOfox3ButU5O6dY5aO/P1NYhQbY1K17sFeE/H8xXix1AZslcXth2JVTqNLmnwJ5rJ/umLxrBl9bxiokDVBeAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-31T23:06:31.402309Z","bundle_sha256":"981a6ec017ec5e422e9a83306c2d22bfbb6356462595dffda5c7bbc271f65999"}}