{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:6LKPK23MUIO64XJUOD2JPJZ6UZ","short_pith_number":"pith:6LKPK23M","canonical_record":{"source":{"id":"1812.08782","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2018-12-20T18:57:32Z","cross_cats_sorted":["gr-qc"],"title_canon_sha256":"87af8ab3f849334eeee9ae2d05036b4646359f5317aa4927eb8638e773487e47","abstract_canon_sha256":"49f200938aec90c6121ab4c2b4d7d010ab52002c98e7d81e6ce1eb9f2ed2811d"},"schema_version":"1.0"},"canonical_sha256":"f2d4f56b6ca21dee5d3470f497a73ea647fdb0ff85c3443d063c811ada513156","source":{"kind":"arxiv","id":"1812.08782","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1812.08782","created_at":"2026-05-17T23:48:16Z"},{"alias_kind":"arxiv_version","alias_value":"1812.08782v2","created_at":"2026-05-17T23:48:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1812.08782","created_at":"2026-05-17T23:48:16Z"},{"alias_kind":"pith_short_12","alias_value":"6LKPK23MUIO6","created_at":"2026-05-18T12:32:08Z"},{"alias_kind":"pith_short_16","alias_value":"6LKPK23MUIO64XJU","created_at":"2026-05-18T12:32:08Z"},{"alias_kind":"pith_short_8","alias_value":"6LKPK23M","created_at":"2026-05-18T12:32:08Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:6LKPK23MUIO64XJUOD2JPJZ6UZ","target":"record","payload":{"canonical_record":{"source":{"id":"1812.08782","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2018-12-20T18:57:32Z","cross_cats_sorted":["gr-qc"],"title_canon_sha256":"87af8ab3f849334eeee9ae2d05036b4646359f5317aa4927eb8638e773487e47","abstract_canon_sha256":"49f200938aec90c6121ab4c2b4d7d010ab52002c98e7d81e6ce1eb9f2ed2811d"},"schema_version":"1.0"},"canonical_sha256":"f2d4f56b6ca21dee5d3470f497a73ea647fdb0ff85c3443d063c811ada513156","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:48:16.811200Z","signature_b64":"gCLKyWMtQNJenKkhPulzjpNEyFFTThVahxOtp99WVCqdI8K/MyeU6MkyhBUg4xjWgOrfpciplQ1+pvLZ1AI1Cw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f2d4f56b6ca21dee5d3470f497a73ea647fdb0ff85c3443d063c811ada513156","last_reissued_at":"2026-05-17T23:48:16.810600Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:48:16.810600Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1812.08782","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":"2026-05-17T23:48:16Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"uKKEVQ7J6YMAj5zmOa9ya83gPdrKjkm/FDfeB3P2b4Sj65i5YieXbKe7NdVnLNPN+RjceFgOuYuyPR2yQ3iPBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-06T16:29:35.611113Z"},"content_sha256":"87a2c8401ca377a5cb3ad56b211026acf30683de7bdccbfd1c37fea072356162","schema_version":"1.0","event_id":"sha256:87a2c8401ca377a5cb3ad56b211026acf30683de7bdccbfd1c37fea072356162"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:6LKPK23MUIO64XJUOD2JPJZ6UZ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Zooming in on fermions and quantum gravity","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["gr-qc"],"primary_cat":"hep-th","authors_text":"Astrid Eichhorn, Marc Schiffer, Stefan Lippoldt","submitted_at":"2018-12-20T18:57:32Z","abstract_excerpt":"We zoom in on the microscopic dynamics for fermions and quantum gravity within the asymptotic-safety paradigm. A key finding of our study is the unavoidable presence of a nonminimal derivative coupling between the curvature and fermion fields in the ultraviolet. Its backreaction on the properties of the Reuter fixed point remains small for finite fermion numbers within a bounded range. This constitutes a nontrivial test of the asymptotic-safety scenario for gravity and fermionic matter, additionally supplemented by our studies of the momentum-dependent vertex flow which indicate the subleading"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1812.08782","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":"2026-05-17T23:48:16Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"n2ZNQu5N5Er6q9Ff0AzTPZrfJ+hujorQWEDbqOmYyBImt7Invw2JfjQv1ML54ninwTkpnvv1vrztlWAe8x7WDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-06T16:29:35.611788Z"},"content_sha256":"2ad03b4dc5edee0b5523582d675fd58241c64a37a21684fdd03b13d0011c0439","schema_version":"1.0","event_id":"sha256:2ad03b4dc5edee0b5523582d675fd58241c64a37a21684fdd03b13d0011c0439"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/6LKPK23MUIO64XJUOD2JPJZ6UZ/bundle.json","state_url":"https://pith.science/pith/6LKPK23MUIO64XJUOD2JPJZ6UZ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/6LKPK23MUIO64XJUOD2JPJZ6UZ/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":"2026-06-06T16:29:35Z","links":{"resolver":"https://pith.science/pith/6LKPK23MUIO64XJUOD2JPJZ6UZ","bundle":"https://pith.science/pith/6LKPK23MUIO64XJUOD2JPJZ6UZ/bundle.json","state":"https://pith.science/pith/6LKPK23MUIO64XJUOD2JPJZ6UZ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/6LKPK23MUIO64XJUOD2JPJZ6UZ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:6LKPK23MUIO64XJUOD2JPJZ6UZ","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":"49f200938aec90c6121ab4c2b4d7d010ab52002c98e7d81e6ce1eb9f2ed2811d","cross_cats_sorted":["gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2018-12-20T18:57:32Z","title_canon_sha256":"87af8ab3f849334eeee9ae2d05036b4646359f5317aa4927eb8638e773487e47"},"schema_version":"1.0","source":{"id":"1812.08782","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1812.08782","created_at":"2026-05-17T23:48:16Z"},{"alias_kind":"arxiv_version","alias_value":"1812.08782v2","created_at":"2026-05-17T23:48:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1812.08782","created_at":"2026-05-17T23:48:16Z"},{"alias_kind":"pith_short_12","alias_value":"6LKPK23MUIO6","created_at":"2026-05-18T12:32:08Z"},{"alias_kind":"pith_short_16","alias_value":"6LKPK23MUIO64XJU","created_at":"2026-05-18T12:32:08Z"},{"alias_kind":"pith_short_8","alias_value":"6LKPK23M","created_at":"2026-05-18T12:32:08Z"}],"graph_snapshots":[{"event_id":"sha256:2ad03b4dc5edee0b5523582d675fd58241c64a37a21684fdd03b13d0011c0439","target":"graph","created_at":"2026-05-17T23:48:16Z","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 zoom in on the microscopic dynamics for fermions and quantum gravity within the asymptotic-safety paradigm. A key finding of our study is the unavoidable presence of a nonminimal derivative coupling between the curvature and fermion fields in the ultraviolet. Its backreaction on the properties of the Reuter fixed point remains small for finite fermion numbers within a bounded range. This constitutes a nontrivial test of the asymptotic-safety scenario for gravity and fermionic matter, additionally supplemented by our studies of the momentum-dependent vertex flow which indicate the subleading","authors_text":"Astrid Eichhorn, Marc Schiffer, Stefan Lippoldt","cross_cats":["gr-qc"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2018-12-20T18:57:32Z","title":"Zooming in on fermions and quantum gravity"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1812.08782","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":"sha256:87a2c8401ca377a5cb3ad56b211026acf30683de7bdccbfd1c37fea072356162","target":"record","created_at":"2026-05-17T23:48:16Z","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":"49f200938aec90c6121ab4c2b4d7d010ab52002c98e7d81e6ce1eb9f2ed2811d","cross_cats_sorted":["gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2018-12-20T18:57:32Z","title_canon_sha256":"87af8ab3f849334eeee9ae2d05036b4646359f5317aa4927eb8638e773487e47"},"schema_version":"1.0","source":{"id":"1812.08782","kind":"arxiv","version":2}},"canonical_sha256":"f2d4f56b6ca21dee5d3470f497a73ea647fdb0ff85c3443d063c811ada513156","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f2d4f56b6ca21dee5d3470f497a73ea647fdb0ff85c3443d063c811ada513156","first_computed_at":"2026-05-17T23:48:16.810600Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:48:16.810600Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"gCLKyWMtQNJenKkhPulzjpNEyFFTThVahxOtp99WVCqdI8K/MyeU6MkyhBUg4xjWgOrfpciplQ1+pvLZ1AI1Cw==","signature_status":"signed_v1","signed_at":"2026-05-17T23:48:16.811200Z","signed_message":"canonical_sha256_bytes"},"source_id":"1812.08782","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:87a2c8401ca377a5cb3ad56b211026acf30683de7bdccbfd1c37fea072356162","sha256:2ad03b4dc5edee0b5523582d675fd58241c64a37a21684fdd03b13d0011c0439"],"state_sha256":"daa6fab6098fec99c233e45816e9650af3eb1aeb693e0a6f5427b18b56c0d2c6"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"LHaUnxT8l2lOiPsODqams156+9xWQAVV+c9Qepz6CiJxP7OoXwJi4DpS5yUQuV3HnVRUKiHmNRvc1KPgisKKAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-06T16:29:35.615233Z","bundle_sha256":"30f2eb0d090bb8dc78d92d5fc6a70d6b93f46dd20d3ffdb99498745475299685"}}