{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:KSSWUPT6MU5KEJIL6IKRBA7OW4","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":"d055c940bb817c33a3681bfaa5cd1ec7133f6f75d232b42041a0c6abb3582782","cross_cats_sorted":["hep-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2020-07-02T18:00:07Z","title_canon_sha256":"2321e9b477f568e32f8f3fb0aecdde682bb0327049927217bc58de1906dbcaf0"},"schema_version":"1.0","source":{"id":"2007.01315","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2007.01315","created_at":"2026-07-05T01:16:00Z"},{"alias_kind":"arxiv_version","alias_value":"2007.01315v1","created_at":"2026-07-05T01:16:00Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2007.01315","created_at":"2026-07-05T01:16:00Z"},{"alias_kind":"pith_short_12","alias_value":"KSSWUPT6MU5K","created_at":"2026-07-05T01:16:00Z"},{"alias_kind":"pith_short_16","alias_value":"KSSWUPT6MU5KEJIL","created_at":"2026-07-05T01:16:00Z"},{"alias_kind":"pith_short_8","alias_value":"KSSWUPT6","created_at":"2026-07-05T01:16:00Z"}],"graph_snapshots":[{"event_id":"sha256:3ae3348e8b4dc7724828dd2ae6cb038ca62c48bb1551c6492a53f3bb34637658","target":"graph","created_at":"2026-07-05T01:16:00Z","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/2007.01315/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"In quantum gravity, we envision renormalization as the key tool for bridging the gap between microscopic models and observable scales. For spin foam quantum gravity, which is defined on a discretisation akin to lattice gauge theories, the goal is to derive an effective theory on a coarser discretisation from the dynamics on the finer one, coarse graining the system in the process and thus relating physics at different scales. In this review I will discuss the motivation for studying renormalization in spin foam quantum gravity, e.g. to restore diffeomorphism symmetry, and explain how to define","authors_text":"Sebastian Steinhaus","cross_cats":["hep-th"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2020-07-02T18:00:07Z","title":"Coarse graining spin foam quantum gravity -- a review"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2007.01315","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":"sha256:9e53e6109eb2b0a5b6ffb64b03c43091746003b11841960580f23d61e45c9be6","target":"record","created_at":"2026-07-05T01:16:00Z","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":"d055c940bb817c33a3681bfaa5cd1ec7133f6f75d232b42041a0c6abb3582782","cross_cats_sorted":["hep-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2020-07-02T18:00:07Z","title_canon_sha256":"2321e9b477f568e32f8f3fb0aecdde682bb0327049927217bc58de1906dbcaf0"},"schema_version":"1.0","source":{"id":"2007.01315","kind":"arxiv","version":1}},"canonical_sha256":"54a56a3e7e653aa2250bf2151083eeb71802f8fd4ba08fa9f6907532685aef64","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"54a56a3e7e653aa2250bf2151083eeb71802f8fd4ba08fa9f6907532685aef64","first_computed_at":"2026-07-05T01:16:00.208478Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:16:00.208478Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"/lUixceTMZ5wcP/0CB0zRsB78oIFhq/52rCyozl+VkK2RstpKXZGWXhS2XYwqJHyNXeeNMgjQnvJcaGIe6DEDQ==","signature_status":"signed_v1","signed_at":"2026-07-05T01:16:00.208809Z","signed_message":"canonical_sha256_bytes"},"source_id":"2007.01315","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9e53e6109eb2b0a5b6ffb64b03c43091746003b11841960580f23d61e45c9be6","sha256:3ae3348e8b4dc7724828dd2ae6cb038ca62c48bb1551c6492a53f3bb34637658"],"state_sha256":"0ce123e3196902ddc59c8c3c0e61adb15991d82916c23147b45305659ab3a1e6"}