{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:XFYMRMQ65HLKQ5SRFRHJOWEWSQ","short_pith_number":"pith:XFYMRMQ6","canonical_record":{"source":{"id":"1912.11124","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2019-12-23T21:58:23Z","cross_cats_sorted":["hep-th"],"title_canon_sha256":"c2ec99f93cf697ca90726a5d9cc7efb9fa0d26ce5ae10499ccbf0c9bc0030e55","abstract_canon_sha256":"7e506a52e2ecc59770bc2c1a56027a4464bf149db3f6a7cf2bceaab766d0ad3e"},"schema_version":"1.0"},"canonical_sha256":"b970c8b21ee9d6a876512c4e975896940f6172aee1dd17e9c01aa0c1aef0b5dc","source":{"kind":"arxiv","id":"1912.11124","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1912.11124","created_at":"2026-07-05T06:18:34Z"},{"alias_kind":"arxiv_version","alias_value":"1912.11124v3","created_at":"2026-07-05T06:18:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1912.11124","created_at":"2026-07-05T06:18:34Z"},{"alias_kind":"pith_short_12","alias_value":"XFYMRMQ65HLK","created_at":"2026-07-05T06:18:34Z"},{"alias_kind":"pith_short_16","alias_value":"XFYMRMQ65HLKQ5SR","created_at":"2026-07-05T06:18:34Z"},{"alias_kind":"pith_short_8","alias_value":"XFYMRMQ6","created_at":"2026-07-05T06:18:34Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:XFYMRMQ65HLKQ5SRFRHJOWEWSQ","target":"record","payload":{"canonical_record":{"source":{"id":"1912.11124","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2019-12-23T21:58:23Z","cross_cats_sorted":["hep-th"],"title_canon_sha256":"c2ec99f93cf697ca90726a5d9cc7efb9fa0d26ce5ae10499ccbf0c9bc0030e55","abstract_canon_sha256":"7e506a52e2ecc59770bc2c1a56027a4464bf149db3f6a7cf2bceaab766d0ad3e"},"schema_version":"1.0"},"canonical_sha256":"b970c8b21ee9d6a876512c4e975896940f6172aee1dd17e9c01aa0c1aef0b5dc","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T06:18:34.144011Z","signature_b64":"l7t514/Nu/w38K9hJeicV4bXNC7wqIG/9QlSHxHA+uCaUhqsltDCKhBNegGOnozavJNNICrw6fTeD5kGpjJXCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b970c8b21ee9d6a876512c4e975896940f6172aee1dd17e9c01aa0c1aef0b5dc","last_reissued_at":"2026-07-05T06:18:34.143529Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T06:18:34.143529Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1912.11124","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T06:18:34Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"FwZhQEcBt9QPaIbcqOUhYEU1/WXP6AsqXnUsiQ71McPKpsvd31m5aia3Jdm7wzrV7jmAWxYwSdZnpTYLqsHyBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-15T20:23:29.308358Z"},"content_sha256":"ab758fc4bd2bd33f616b74d1e0297d4b904992c6e4de5e495cdef8cfaa3601f4","schema_version":"1.0","event_id":"sha256:ab758fc4bd2bd33f616b74d1e0297d4b904992c6e4de5e495cdef8cfaa3601f4"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:XFYMRMQ65HLKQ5SRFRHJOWEWSQ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Cosmology of fermionic dark energy coupled to curvature","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-th"],"primary_cat":"gr-qc","authors_text":"David Benisty","submitted_at":"2019-12-23T21:58:23Z","abstract_excerpt":"A formulation of cosmology driven by fermions $\\psi $ is studied. Assumption that the expectation value of the fermion bilinear is non-zero simplifies the homogeneous solution of the Dirac equations and connects the spinor field with the scale parameter of the universe. With coupling between the Einstein term and spinor field $1 - \\frac{\\xi }{6} (\\bar{\\psi }\\psi )^{-l}$, the possibility for a late time interaction emerges. In that way, the early universe agrees with $\\Lambda $CDM model, but for the late universe the new integrating term dominates."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1912.11124","kind":"arxiv","version":3},"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/1912.11124/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":"2026-07-05T06:18:34Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3gs4GZsJhcayXE+7pBiWWZPb3fqNp7wtfZhQ2IH2S67mTsPFOCyftCOreltEesNTshVYv1jJj77F6GV7QgnTDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-15T20:23:29.308855Z"},"content_sha256":"b2e0581d80c523a679f3bbc68b5fa04d065bc241142c3c9623ca40b88025df43","schema_version":"1.0","event_id":"sha256:b2e0581d80c523a679f3bbc68b5fa04d065bc241142c3c9623ca40b88025df43"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/XFYMRMQ65HLKQ5SRFRHJOWEWSQ/bundle.json","state_url":"https://pith.science/pith/XFYMRMQ65HLKQ5SRFRHJOWEWSQ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/XFYMRMQ65HLKQ5SRFRHJOWEWSQ/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":"2026-08-15T20:23:29Z","links":{"resolver":"https://pith.science/pith/XFYMRMQ65HLKQ5SRFRHJOWEWSQ","bundle":"https://pith.science/pith/XFYMRMQ65HLKQ5SRFRHJOWEWSQ/bundle.json","state":"https://pith.science/pith/XFYMRMQ65HLKQ5SRFRHJOWEWSQ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/XFYMRMQ65HLKQ5SRFRHJOWEWSQ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:XFYMRMQ65HLKQ5SRFRHJOWEWSQ","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":"7e506a52e2ecc59770bc2c1a56027a4464bf149db3f6a7cf2bceaab766d0ad3e","cross_cats_sorted":["hep-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2019-12-23T21:58:23Z","title_canon_sha256":"c2ec99f93cf697ca90726a5d9cc7efb9fa0d26ce5ae10499ccbf0c9bc0030e55"},"schema_version":"1.0","source":{"id":"1912.11124","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1912.11124","created_at":"2026-07-05T06:18:34Z"},{"alias_kind":"arxiv_version","alias_value":"1912.11124v3","created_at":"2026-07-05T06:18:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1912.11124","created_at":"2026-07-05T06:18:34Z"},{"alias_kind":"pith_short_12","alias_value":"XFYMRMQ65HLK","created_at":"2026-07-05T06:18:34Z"},{"alias_kind":"pith_short_16","alias_value":"XFYMRMQ65HLKQ5SR","created_at":"2026-07-05T06:18:34Z"},{"alias_kind":"pith_short_8","alias_value":"XFYMRMQ6","created_at":"2026-07-05T06:18:34Z"}],"graph_snapshots":[{"event_id":"sha256:b2e0581d80c523a679f3bbc68b5fa04d065bc241142c3c9623ca40b88025df43","target":"graph","created_at":"2026-07-05T06:18:34Z","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/1912.11124/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"A formulation of cosmology driven by fermions $\\psi $ is studied. Assumption that the expectation value of the fermion bilinear is non-zero simplifies the homogeneous solution of the Dirac equations and connects the spinor field with the scale parameter of the universe. With coupling between the Einstein term and spinor field $1 - \\frac{\\xi }{6} (\\bar{\\psi }\\psi )^{-l}$, the possibility for a late time interaction emerges. In that way, the early universe agrees with $\\Lambda $CDM model, but for the late universe the new integrating term dominates.","authors_text":"David Benisty","cross_cats":["hep-th"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2019-12-23T21:58:23Z","title":"Cosmology of fermionic dark energy coupled to curvature"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1912.11124","kind":"arxiv","version":3},"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:ab758fc4bd2bd33f616b74d1e0297d4b904992c6e4de5e495cdef8cfaa3601f4","target":"record","created_at":"2026-07-05T06:18:34Z","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":"7e506a52e2ecc59770bc2c1a56027a4464bf149db3f6a7cf2bceaab766d0ad3e","cross_cats_sorted":["hep-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2019-12-23T21:58:23Z","title_canon_sha256":"c2ec99f93cf697ca90726a5d9cc7efb9fa0d26ce5ae10499ccbf0c9bc0030e55"},"schema_version":"1.0","source":{"id":"1912.11124","kind":"arxiv","version":3}},"canonical_sha256":"b970c8b21ee9d6a876512c4e975896940f6172aee1dd17e9c01aa0c1aef0b5dc","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b970c8b21ee9d6a876512c4e975896940f6172aee1dd17e9c01aa0c1aef0b5dc","first_computed_at":"2026-07-05T06:18:34.143529Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T06:18:34.143529Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"l7t514/Nu/w38K9hJeicV4bXNC7wqIG/9QlSHxHA+uCaUhqsltDCKhBNegGOnozavJNNICrw6fTeD5kGpjJXCg==","signature_status":"signed_v1","signed_at":"2026-07-05T06:18:34.144011Z","signed_message":"canonical_sha256_bytes"},"source_id":"1912.11124","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ab758fc4bd2bd33f616b74d1e0297d4b904992c6e4de5e495cdef8cfaa3601f4","sha256:b2e0581d80c523a679f3bbc68b5fa04d065bc241142c3c9623ca40b88025df43"],"state_sha256":"89a5afbf0efd4e019fd60cc07544037940441c94589caaa2cc09121d2f7f75d1"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"7jL3mHVtkH3fSKzKv+FqOTYSXJtmS7kuW3iuGAqIv/Q5up2nXVct/134AsaCStAra4/bW2QKqeG1F7YITiWvDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-15T20:23:29.311939Z","bundle_sha256":"437a7c675dfbbf60d440df15a1a39350b2d085d99089ae1a01aec3db7ec847fd"}}