{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:FLAUH456RIGGB6QBPMDHYGRG2X","short_pith_number":"pith:FLAUH456","canonical_record":{"source":{"id":"2104.05271","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2021-04-12T08:06:39Z","cross_cats_sorted":["astro-ph.CO","gr-qc","hep-ph"],"title_canon_sha256":"4c6fd0e9767fab9bb37f6074847cea91c98325a3ba47c8ea7c8b421b1e286799","abstract_canon_sha256":"03ff3c70dd681c67c8bfc13848fcb7e7758ca7d5aac62d5ce6a93bb7a8feafd8"},"schema_version":"1.0"},"canonical_sha256":"2ac143f3be8a0c60fa017b067c1a26d5c83aa5e2b155a1318f83227e60967c3d","source":{"kind":"arxiv","id":"2104.05271","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2104.05271","created_at":"2026-07-05T02:51:22Z"},{"alias_kind":"arxiv_version","alias_value":"2104.05271v1","created_at":"2026-07-05T02:51:22Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2104.05271","created_at":"2026-07-05T02:51:22Z"},{"alias_kind":"pith_short_12","alias_value":"FLAUH456RIGG","created_at":"2026-07-05T02:51:22Z"},{"alias_kind":"pith_short_16","alias_value":"FLAUH456RIGGB6QB","created_at":"2026-07-05T02:51:22Z"},{"alias_kind":"pith_short_8","alias_value":"FLAUH456","created_at":"2026-07-05T02:51:22Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:FLAUH456RIGGB6QBPMDHYGRG2X","target":"record","payload":{"canonical_record":{"source":{"id":"2104.05271","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2021-04-12T08:06:39Z","cross_cats_sorted":["astro-ph.CO","gr-qc","hep-ph"],"title_canon_sha256":"4c6fd0e9767fab9bb37f6074847cea91c98325a3ba47c8ea7c8b421b1e286799","abstract_canon_sha256":"03ff3c70dd681c67c8bfc13848fcb7e7758ca7d5aac62d5ce6a93bb7a8feafd8"},"schema_version":"1.0"},"canonical_sha256":"2ac143f3be8a0c60fa017b067c1a26d5c83aa5e2b155a1318f83227e60967c3d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T02:51:22.761765Z","signature_b64":"RAkjZyOIxOSt68FYQpoVxb9i8Le3hwISWt3fSJMiGi3FbEPNrjOrGPvRovXdAE35JUogBEbQe2qOa2qfz2E2DA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2ac143f3be8a0c60fa017b067c1a26d5c83aa5e2b155a1318f83227e60967c3d","last_reissued_at":"2026-07-05T02:51:22.761235Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T02:51:22.761235Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2104.05271","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":"2026-07-05T02:51:22Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"DZQlLq09at1eU4LUQ0TcC/thZPNuwfLt/YC0BcVkVAOnm12VD3rSnfjfxwxLAnwuJCcmCDrdwXibd66Iq7n7Aw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-14T09:58:53.594312Z"},"content_sha256":"badb67488f8b9b5f420948c80d053c81fb221babb4ca7bff834824d68acb6462","schema_version":"1.0","event_id":"sha256:badb67488f8b9b5f420948c80d053c81fb221babb4ca7bff834824d68acb6462"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:FLAUH456RIGGB6QBPMDHYGRG2X","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Cosmology of strongly interacting fermions in the early universe","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO","gr-qc","hep-ph"],"primary_cat":"hep-th","authors_text":"Guillem Dom\\`enech, Misao Sasaki","submitted_at":"2021-04-12T08:06:39Z","abstract_excerpt":"In view of growing interest in long range scalar forces in the early universe to generate primordial black holes, we study in detail the general relativistic formulation of a Fermi gas interacting with a scalar field in cosmology. Our main finding is that the Yukawa interaction leads to a solution where the scalar field oscillates around zero fermion mass and all energy densities decay as radiation. On one hand, we show that if the Fermi gas starts relativistic, it could stay relativistic. On the other hand, if the fermions are initially non-relativistic, they remain non-relativistic for all p"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2104.05271","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/2104.05271/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":"2026-07-05T02:51:22Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"JHpItQ4VwGysacwmjagT4hXZCge9NtAb3Old30fxtR9+f2ah/eGyXYky4VFCpH0AMyIIgyqeXGRydZHGyZdAAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-14T09:58:53.595215Z"},"content_sha256":"fd2811e50564aa3d2f4979fed61620401ffd4aaace472f818d161e2a78c1e555","schema_version":"1.0","event_id":"sha256:fd2811e50564aa3d2f4979fed61620401ffd4aaace472f818d161e2a78c1e555"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/FLAUH456RIGGB6QBPMDHYGRG2X/bundle.json","state_url":"https://pith.science/pith/FLAUH456RIGGB6QBPMDHYGRG2X/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/FLAUH456RIGGB6QBPMDHYGRG2X/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":"2026-08-14T09:58:53Z","links":{"resolver":"https://pith.science/pith/FLAUH456RIGGB6QBPMDHYGRG2X","bundle":"https://pith.science/pith/FLAUH456RIGGB6QBPMDHYGRG2X/bundle.json","state":"https://pith.science/pith/FLAUH456RIGGB6QBPMDHYGRG2X/state.json","well_known_bundle":"https://pith.science/.well-known/pith/FLAUH456RIGGB6QBPMDHYGRG2X/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:FLAUH456RIGGB6QBPMDHYGRG2X","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":"03ff3c70dd681c67c8bfc13848fcb7e7758ca7d5aac62d5ce6a93bb7a8feafd8","cross_cats_sorted":["astro-ph.CO","gr-qc","hep-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2021-04-12T08:06:39Z","title_canon_sha256":"4c6fd0e9767fab9bb37f6074847cea91c98325a3ba47c8ea7c8b421b1e286799"},"schema_version":"1.0","source":{"id":"2104.05271","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2104.05271","created_at":"2026-07-05T02:51:22Z"},{"alias_kind":"arxiv_version","alias_value":"2104.05271v1","created_at":"2026-07-05T02:51:22Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2104.05271","created_at":"2026-07-05T02:51:22Z"},{"alias_kind":"pith_short_12","alias_value":"FLAUH456RIGG","created_at":"2026-07-05T02:51:22Z"},{"alias_kind":"pith_short_16","alias_value":"FLAUH456RIGGB6QB","created_at":"2026-07-05T02:51:22Z"},{"alias_kind":"pith_short_8","alias_value":"FLAUH456","created_at":"2026-07-05T02:51:22Z"}],"graph_snapshots":[{"event_id":"sha256:fd2811e50564aa3d2f4979fed61620401ffd4aaace472f818d161e2a78c1e555","target":"graph","created_at":"2026-07-05T02:51:22Z","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/2104.05271/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"In view of growing interest in long range scalar forces in the early universe to generate primordial black holes, we study in detail the general relativistic formulation of a Fermi gas interacting with a scalar field in cosmology. Our main finding is that the Yukawa interaction leads to a solution where the scalar field oscillates around zero fermion mass and all energy densities decay as radiation. On one hand, we show that if the Fermi gas starts relativistic, it could stay relativistic. On the other hand, if the fermions are initially non-relativistic, they remain non-relativistic for all p","authors_text":"Guillem Dom\\`enech, Misao Sasaki","cross_cats":["astro-ph.CO","gr-qc","hep-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2021-04-12T08:06:39Z","title":"Cosmology of strongly interacting fermions in the early universe"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2104.05271","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:badb67488f8b9b5f420948c80d053c81fb221babb4ca7bff834824d68acb6462","target":"record","created_at":"2026-07-05T02:51:22Z","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":"03ff3c70dd681c67c8bfc13848fcb7e7758ca7d5aac62d5ce6a93bb7a8feafd8","cross_cats_sorted":["astro-ph.CO","gr-qc","hep-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2021-04-12T08:06:39Z","title_canon_sha256":"4c6fd0e9767fab9bb37f6074847cea91c98325a3ba47c8ea7c8b421b1e286799"},"schema_version":"1.0","source":{"id":"2104.05271","kind":"arxiv","version":1}},"canonical_sha256":"2ac143f3be8a0c60fa017b067c1a26d5c83aa5e2b155a1318f83227e60967c3d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2ac143f3be8a0c60fa017b067c1a26d5c83aa5e2b155a1318f83227e60967c3d","first_computed_at":"2026-07-05T02:51:22.761235Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T02:51:22.761235Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"RAkjZyOIxOSt68FYQpoVxb9i8Le3hwISWt3fSJMiGi3FbEPNrjOrGPvRovXdAE35JUogBEbQe2qOa2qfz2E2DA==","signature_status":"signed_v1","signed_at":"2026-07-05T02:51:22.761765Z","signed_message":"canonical_sha256_bytes"},"source_id":"2104.05271","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:badb67488f8b9b5f420948c80d053c81fb221babb4ca7bff834824d68acb6462","sha256:fd2811e50564aa3d2f4979fed61620401ffd4aaace472f818d161e2a78c1e555"],"state_sha256":"e30019e0abe1abc75167a924080a65d2aa52f2f6d74d36fc15bf62fc44296563"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"J2icloCigdByDNvjkp3hQZg/R8c+IYzvEkyXyoWtlZJOnXM+JlqvPNuWgA2Ij8vVN2DfO1EewrJhgEgRR1M7DQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-14T09:58:53.602273Z","bundle_sha256":"48e88a47cb7eb372e87c2c92d2a1011e750333d8b68f0c8b26118e770ae3554e"}}