{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2016:JZGBEZMRWPBSCVTNBLG26PD5GY","short_pith_number":"pith:JZGBEZMR","schema_version":"1.0","canonical_sha256":"4e4c126591b3c321566d0acdaf3c7d3603519b4568f25dfa9f11ed19a23ebc53","source":{"kind":"arxiv","id":"1612.00278","version":2},"attestation_state":"computed","paper":{"title":"Enhanced Asymptotic Symmetry Algebra of 2+1 Dimensional Flat Space","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-th","authors_text":"Max Riegler, St\\'ephane Detournay","submitted_at":"2016-12-01T14:44:51Z","abstract_excerpt":"In this paper we present a new set of asymptotic boundary conditions for Einstein gravity in 2+1 dimensions with vanishing cosmological constant that are a generalization of the Barnich-Comp{\\`e}re boundary conditions gr-qc/0610130. These new boundary conditions lead to an asymptotic symmetry algebra that is generated by a $\\mathfrak{bms}_3$ algebra and two affine $\\hat{\\mathfrak{u}}(1)$ current algebras. We then apply these boundary conditions to Topologically Massive Gravity (TMG) and determine how the presence of the gravitational Chern-Simons term affects the central extensions of the asym"},"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":"1612.00278","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2016-12-01T14:44:51Z","cross_cats_sorted":[],"title_canon_sha256":"55da7398026c2cafed661d81a32938ad2fc0fef55727ffc03e8e8a2ef2691451","abstract_canon_sha256":"ec8d33c0a7605aa31f8758d50ca26d5cf045e207dcd98e51a3aafa36bd3a2684"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:49:50.998374Z","signature_b64":"0Y/jD5OPjoyWKlu1/Sm1zf9Qn3UCTHOO51Lg/m0FmYmZVGDSKI2FxK43rQ6pZAB+MQAytwqBuUxX1+BEg+BKCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"4e4c126591b3c321566d0acdaf3c7d3603519b4568f25dfa9f11ed19a23ebc53","last_reissued_at":"2026-05-18T00:49:50.997790Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:49:50.997790Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Enhanced Asymptotic Symmetry Algebra of 2+1 Dimensional Flat Space","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-th","authors_text":"Max Riegler, St\\'ephane Detournay","submitted_at":"2016-12-01T14:44:51Z","abstract_excerpt":"In this paper we present a new set of asymptotic boundary conditions for Einstein gravity in 2+1 dimensions with vanishing cosmological constant that are a generalization of the Barnich-Comp{\\`e}re boundary conditions gr-qc/0610130. These new boundary conditions lead to an asymptotic symmetry algebra that is generated by a $\\mathfrak{bms}_3$ algebra and two affine $\\hat{\\mathfrak{u}}(1)$ current algebras. We then apply these boundary conditions to Topologically Massive Gravity (TMG) and determine how the presence of the gravitational Chern-Simons term affects the central extensions of the asym"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1612.00278","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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1612.00278","created_at":"2026-05-18T00:49:50.997880+00:00"},{"alias_kind":"arxiv_version","alias_value":"1612.00278v2","created_at":"2026-05-18T00:49:50.997880+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1612.00278","created_at":"2026-05-18T00:49:50.997880+00:00"},{"alias_kind":"pith_short_12","alias_value":"JZGBEZMRWPBS","created_at":"2026-05-18T12:30:25.849896+00:00"},{"alias_kind":"pith_short_16","alias_value":"JZGBEZMRWPBSCVTN","created_at":"2026-05-18T12:30:25.849896+00:00"},{"alias_kind":"pith_short_8","alias_value":"JZGBEZMR","created_at":"2026-05-18T12:30:25.849896+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":2,"internal_anchor_count":2,"sample":[{"citing_arxiv_id":"2607.06826","citing_title":"BMS$_3$ invariant field theories","ref_index":85,"is_internal_anchor":true},{"citing_arxiv_id":"2604.27068","citing_title":"Holographic realization of higher-spin Carrollian free fields","ref_index":71,"is_internal_anchor":true}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/JZGBEZMRWPBSCVTNBLG26PD5GY","json":"https://pith.science/pith/JZGBEZMRWPBSCVTNBLG26PD5GY.json","graph_json":"https://pith.science/api/pith-number/JZGBEZMRWPBSCVTNBLG26PD5GY/graph.json","events_json":"https://pith.science/api/pith-number/JZGBEZMRWPBSCVTNBLG26PD5GY/events.json","paper":"https://pith.science/paper/JZGBEZMR"},"agent_actions":{"view_html":"https://pith.science/pith/JZGBEZMRWPBSCVTNBLG26PD5GY","download_json":"https://pith.science/pith/JZGBEZMRWPBSCVTNBLG26PD5GY.json","view_paper":"https://pith.science/paper/JZGBEZMR","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1612.00278&json=true","fetch_graph":"https://pith.science/api/pith-number/JZGBEZMRWPBSCVTNBLG26PD5GY/graph.json","fetch_events":"https://pith.science/api/pith-number/JZGBEZMRWPBSCVTNBLG26PD5GY/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/JZGBEZMRWPBSCVTNBLG26PD5GY/action/timestamp_anchor","attest_storage":"https://pith.science/pith/JZGBEZMRWPBSCVTNBLG26PD5GY/action/storage_attestation","attest_author":"https://pith.science/pith/JZGBEZMRWPBSCVTNBLG26PD5GY/action/author_attestation","sign_citation":"https://pith.science/pith/JZGBEZMRWPBSCVTNBLG26PD5GY/action/citation_signature","submit_replication":"https://pith.science/pith/JZGBEZMRWPBSCVTNBLG26PD5GY/action/replication_record"}},"created_at":"2026-05-18T00:49:50.997880+00:00","updated_at":"2026-05-18T00:49:50.997880+00:00"}