{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:SJQRFLBAWBXXLNLKZCCPLKH643","short_pith_number":"pith:SJQRFLBA","canonical_record":{"source":{"id":"2512.15860","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"gr-qc","submitted_at":"2025-12-17T19:00:02Z","cross_cats_sorted":["astro-ph.CO","hep-th"],"title_canon_sha256":"38ac5682e3987e113fa6fab5097fbf8b2831fc2d1cfcdb851a102f382bfd941f","abstract_canon_sha256":"63745667157a1bc4c9713e612f30d270983510676b52f0988ce4b3c91664e89c"},"schema_version":"1.0"},"canonical_sha256":"926112ac20b06f75b56ac884f5a8fee6f689bfa16c0049bb9420a5ba86426863","source":{"kind":"arxiv","id":"2512.15860","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2512.15860","created_at":"2026-05-21T00:04:19Z"},{"alias_kind":"arxiv_version","alias_value":"2512.15860v2","created_at":"2026-05-21T00:04:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2512.15860","created_at":"2026-05-21T00:04:19Z"},{"alias_kind":"pith_short_12","alias_value":"SJQRFLBAWBXX","created_at":"2026-05-21T00:04:19Z"},{"alias_kind":"pith_short_16","alias_value":"SJQRFLBAWBXXLNLK","created_at":"2026-05-21T00:04:19Z"},{"alias_kind":"pith_short_8","alias_value":"SJQRFLBA","created_at":"2026-05-21T00:04:19Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:SJQRFLBAWBXXLNLKZCCPLKH643","target":"record","payload":{"canonical_record":{"source":{"id":"2512.15860","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"gr-qc","submitted_at":"2025-12-17T19:00:02Z","cross_cats_sorted":["astro-ph.CO","hep-th"],"title_canon_sha256":"38ac5682e3987e113fa6fab5097fbf8b2831fc2d1cfcdb851a102f382bfd941f","abstract_canon_sha256":"63745667157a1bc4c9713e612f30d270983510676b52f0988ce4b3c91664e89c"},"schema_version":"1.0"},"canonical_sha256":"926112ac20b06f75b56ac884f5a8fee6f689bfa16c0049bb9420a5ba86426863","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-21T00:04:19.858395Z","signature_b64":"DWbndlwSfwPaQ5qfCkgSd5n+rZ85OaU32+41/5mBRzU7WE+8YNR4xvvDd7+ua/lURuK8VH+PU9GTKW0lwaiVCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"926112ac20b06f75b56ac884f5a8fee6f689bfa16c0049bb9420a5ba86426863","last_reissued_at":"2026-05-21T00:04:19.857640Z","signature_status":"signed_v1","first_computed_at":"2026-05-21T00:04:19.857640Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2512.15860","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":"2026-05-21T00:04:19Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5vzXmE38Q1ZQptRef9YJ+4wSdacSsvyTZlMcW0xoFVr/pMBaWI1qhqXua53Y3dZzZNMELJhjOaMHd+p4xxhIDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T11:59:37.974382Z"},"content_sha256":"fa510b4508c8bc349252c9d888eca623774f3a6a346220cb10046e02e8aecd3e","schema_version":"1.0","event_id":"sha256:fa510b4508c8bc349252c9d888eca623774f3a6a346220cb10046e02e8aecd3e"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:SJQRFLBAWBXXLNLKZCCPLKH643","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Particle Production by Time-Varying Dark Energy and the End of Cosmic Expansion","license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","headline":"","cross_cats":["astro-ph.CO","hep-th"],"primary_cat":"gr-qc","authors_text":"Nicolas Patino, Paul J. Steinhardt","submitted_at":"2025-12-17T19:00:02Z","abstract_excerpt":"We consider various possible consequences of time-varying dark energy due to a quintessence scalar field whose energy density is partially converted to particles as the field evolves down its potential. This particle production acts as a source of thermal friction on the field that can make it difficult to distinguish whether dark energy is due to a radiating field rolling down a steep potential, a purely self-interacting field moving down a flatter potential, or a cosmological constant. By reducing the acceleration of the scalar field, thermal friction increases the amount of accelerated expa"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2512.15860","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2512.15860/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":"2026-05-21T00:04:19Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1b5as1l6Ok4LYuhlmTkahDQBMqgAg2uvtOkAfO0mjwllcLkvJLpUDX4186jzM0nc7In1SaXRWmUmyFt1YtI3Aw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T11:59:37.974804Z"},"content_sha256":"8733c57734624546934100f59701a280287c5f12e8f2a60a6c478def5e526d4d","schema_version":"1.0","event_id":"sha256:8733c57734624546934100f59701a280287c5f12e8f2a60a6c478def5e526d4d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/SJQRFLBAWBXXLNLKZCCPLKH643/bundle.json","state_url":"https://pith.science/pith/SJQRFLBAWBXXLNLKZCCPLKH643/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/SJQRFLBAWBXXLNLKZCCPLKH643/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":"2026-05-26T11:59:37Z","links":{"resolver":"https://pith.science/pith/SJQRFLBAWBXXLNLKZCCPLKH643","bundle":"https://pith.science/pith/SJQRFLBAWBXXLNLKZCCPLKH643/bundle.json","state":"https://pith.science/pith/SJQRFLBAWBXXLNLKZCCPLKH643/state.json","well_known_bundle":"https://pith.science/.well-known/pith/SJQRFLBAWBXXLNLKZCCPLKH643/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:SJQRFLBAWBXXLNLKZCCPLKH643","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":"63745667157a1bc4c9713e612f30d270983510676b52f0988ce4b3c91664e89c","cross_cats_sorted":["astro-ph.CO","hep-th"],"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"gr-qc","submitted_at":"2025-12-17T19:00:02Z","title_canon_sha256":"38ac5682e3987e113fa6fab5097fbf8b2831fc2d1cfcdb851a102f382bfd941f"},"schema_version":"1.0","source":{"id":"2512.15860","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2512.15860","created_at":"2026-05-21T00:04:19Z"},{"alias_kind":"arxiv_version","alias_value":"2512.15860v2","created_at":"2026-05-21T00:04:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2512.15860","created_at":"2026-05-21T00:04:19Z"},{"alias_kind":"pith_short_12","alias_value":"SJQRFLBAWBXX","created_at":"2026-05-21T00:04:19Z"},{"alias_kind":"pith_short_16","alias_value":"SJQRFLBAWBXXLNLK","created_at":"2026-05-21T00:04:19Z"},{"alias_kind":"pith_short_8","alias_value":"SJQRFLBA","created_at":"2026-05-21T00:04:19Z"}],"graph_snapshots":[{"event_id":"sha256:8733c57734624546934100f59701a280287c5f12e8f2a60a6c478def5e526d4d","target":"graph","created_at":"2026-05-21T00:04:19Z","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/2512.15860/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We consider various possible consequences of time-varying dark energy due to a quintessence scalar field whose energy density is partially converted to particles as the field evolves down its potential. This particle production acts as a source of thermal friction on the field that can make it difficult to distinguish whether dark energy is due to a radiating field rolling down a steep potential, a purely self-interacting field moving down a flatter potential, or a cosmological constant. By reducing the acceleration of the scalar field, thermal friction increases the amount of accelerated expa","authors_text":"Nicolas Patino, Paul J. Steinhardt","cross_cats":["astro-ph.CO","hep-th"],"headline":"","license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"gr-qc","submitted_at":"2025-12-17T19:00:02Z","title":"Particle Production by Time-Varying Dark Energy and the End of Cosmic Expansion"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2512.15860","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:fa510b4508c8bc349252c9d888eca623774f3a6a346220cb10046e02e8aecd3e","target":"record","created_at":"2026-05-21T00:04:19Z","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":"63745667157a1bc4c9713e612f30d270983510676b52f0988ce4b3c91664e89c","cross_cats_sorted":["astro-ph.CO","hep-th"],"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"gr-qc","submitted_at":"2025-12-17T19:00:02Z","title_canon_sha256":"38ac5682e3987e113fa6fab5097fbf8b2831fc2d1cfcdb851a102f382bfd941f"},"schema_version":"1.0","source":{"id":"2512.15860","kind":"arxiv","version":2}},"canonical_sha256":"926112ac20b06f75b56ac884f5a8fee6f689bfa16c0049bb9420a5ba86426863","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"926112ac20b06f75b56ac884f5a8fee6f689bfa16c0049bb9420a5ba86426863","first_computed_at":"2026-05-21T00:04:19.857640Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-21T00:04:19.857640Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"DWbndlwSfwPaQ5qfCkgSd5n+rZ85OaU32+41/5mBRzU7WE+8YNR4xvvDd7+ua/lURuK8VH+PU9GTKW0lwaiVCw==","signature_status":"signed_v1","signed_at":"2026-05-21T00:04:19.858395Z","signed_message":"canonical_sha256_bytes"},"source_id":"2512.15860","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:fa510b4508c8bc349252c9d888eca623774f3a6a346220cb10046e02e8aecd3e","sha256:8733c57734624546934100f59701a280287c5f12e8f2a60a6c478def5e526d4d"],"state_sha256":"7f307bad16c4e032a4deffc3cbb53eddfe1cad256e7ea0546618ae6d891d5f8a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"a9uKHdNjCLgYhVcvYsQknxNLdH6oCyn1sIE6UKzHPsNVm976+44HjqPfERni67QSJD0kPzF3OFJzEa3EmoAkDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T11:59:37.978084Z","bundle_sha256":"d7715122e6a3d42dd784105e659f81602586e952e5e002d5005690b91b5f220d"}}