{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2009:MYEKHQH5CTYPRG2UWMXUARGRO2","short_pith_number":"pith:MYEKHQH5","schema_version":"1.0","canonical_sha256":"6608a3c0fd14f0f89b54b32f4044d176ab4dec1f5f54abdd304ca1f959ce3b29","source":{"kind":"arxiv","id":"0905.1670","version":1},"attestation_state":"computed","paper":{"title":"(Broken) Gauge Symmetries and Constraints in Regge Calculus","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"gr-qc","authors_text":"Benjamin Bahr, Bianca Dittrich","submitted_at":"2009-05-11T18:37:32Z","abstract_excerpt":"We will examine the issue of diffeomorphism symmetry in simplicial models of (quantum) gravity, in particular for Regge calculus. We find that for a solution with curvature there do not exist exact gauge symmetries on the discrete level. Furthermore we derive a canonical formulation that exactly matches the dynamics and hence symmetries of the covariant picture. In this canonical formulation broken symmetries lead to the replacements of constraints by so--called pseudo constraints. These considerations should be taken into account in attempts to connect spin foam models, based on the Regge act"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"0905.1670","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2009-05-11T18:37:32Z","cross_cats_sorted":[],"title_canon_sha256":"d0feddf673d6f5de873fad4198765fe5afb06a98b01adde046a6b4e58430b4e8","abstract_canon_sha256":"059cd5eadd2cb0cb4a4ce491303b8c17b945462ca10807906c2458913696c721"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T17:17:42.696734Z","signature_b64":"TynKZZeneZ/22Dh7Adq6anx0dhTIxxEa9nekvLCk8jS4ITDcsKy2NIsF6rEZnthFTtcmduJhMTfUBFDAGG6UDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6608a3c0fd14f0f89b54b32f4044d176ab4dec1f5f54abdd304ca1f959ce3b29","last_reissued_at":"2026-07-04T17:17:42.696299Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T17:17:42.696299Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"(Broken) Gauge Symmetries and Constraints in Regge Calculus","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"gr-qc","authors_text":"Benjamin Bahr, Bianca Dittrich","submitted_at":"2009-05-11T18:37:32Z","abstract_excerpt":"We will examine the issue of diffeomorphism symmetry in simplicial models of (quantum) gravity, in particular for Regge calculus. We find that for a solution with curvature there do not exist exact gauge symmetries on the discrete level. Furthermore we derive a canonical formulation that exactly matches the dynamics and hence symmetries of the covariant picture. In this canonical formulation broken symmetries lead to the replacements of constraints by so--called pseudo constraints. These considerations should be taken into account in attempts to connect spin foam models, based on the Regge act"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0905.1670","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/0905.1670/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"},"aliases":[{"alias_kind":"arxiv","alias_value":"0905.1670","created_at":"2026-07-04T17:17:42.696369+00:00"},{"alias_kind":"arxiv_version","alias_value":"0905.1670v1","created_at":"2026-07-04T17:17:42.696369+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0905.1670","created_at":"2026-07-04T17:17:42.696369+00:00"},{"alias_kind":"pith_short_12","alias_value":"MYEKHQH5CTYP","created_at":"2026-07-04T17:17:42.696369+00:00"},{"alias_kind":"pith_short_16","alias_value":"MYEKHQH5CTYPRG2U","created_at":"2026-07-04T17:17:42.696369+00:00"},{"alias_kind":"pith_short_8","alias_value":"MYEKHQH5","created_at":"2026-07-04T17:17:42.696369+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/MYEKHQH5CTYPRG2UWMXUARGRO2","json":"https://pith.science/pith/MYEKHQH5CTYPRG2UWMXUARGRO2.json","graph_json":"https://pith.science/api/pith-number/MYEKHQH5CTYPRG2UWMXUARGRO2/graph.json","events_json":"https://pith.science/api/pith-number/MYEKHQH5CTYPRG2UWMXUARGRO2/events.json","paper":"https://pith.science/paper/MYEKHQH5"},"agent_actions":{"view_html":"https://pith.science/pith/MYEKHQH5CTYPRG2UWMXUARGRO2","download_json":"https://pith.science/pith/MYEKHQH5CTYPRG2UWMXUARGRO2.json","view_paper":"https://pith.science/paper/MYEKHQH5","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=0905.1670&json=true","fetch_graph":"https://pith.science/api/pith-number/MYEKHQH5CTYPRG2UWMXUARGRO2/graph.json","fetch_events":"https://pith.science/api/pith-number/MYEKHQH5CTYPRG2UWMXUARGRO2/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/MYEKHQH5CTYPRG2UWMXUARGRO2/action/timestamp_anchor","attest_storage":"https://pith.science/pith/MYEKHQH5CTYPRG2UWMXUARGRO2/action/storage_attestation","attest_author":"https://pith.science/pith/MYEKHQH5CTYPRG2UWMXUARGRO2/action/author_attestation","sign_citation":"https://pith.science/pith/MYEKHQH5CTYPRG2UWMXUARGRO2/action/citation_signature","submit_replication":"https://pith.science/pith/MYEKHQH5CTYPRG2UWMXUARGRO2/action/replication_record"}},"created_at":"2026-07-04T17:17:42.696369+00:00","updated_at":"2026-07-04T17:17:42.696369+00:00"}