{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2020:DN2TXG6PLLGWSIV53KC55PYB5D","short_pith_number":"pith:DN2TXG6P","schema_version":"1.0","canonical_sha256":"1b753b9bcf5acd6922bdda85debf01e8df715dbe7c2d6b95986b43ba13bb2c88","source":{"kind":"arxiv","id":"2006.13247","version":1},"attestation_state":"computed","paper":{"title":"Lanczos equation on light-like hypersurfaces in a cosmologically viable class of kinetic gravity braiding theories","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"gr-qc","authors_text":"Bence Racsk\\'o, L\\'aszl\\'o \\'Arp\\'ad Gergely","submitted_at":"2020-06-23T18:02:03Z","abstract_excerpt":"We discuss junction conditions across null hypersurfaces in a class of scalar-tensor gravity theories with i) second order dynamics, ii) obeying the recent constraints imposed by gravitational wave propagation, and iii) allowing for a cosmologically viable evolution. These requirements select kinetic gravity braiding models with linear kinetic term dependence and scalar field-dependent coupling to curvature. We explore a pseudo-orthonormal tetrad and its allowed gauge fixing, with one null vector standing as the normal, the other being transversal to the hypersurface. We derive a generalizatio"},"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":"2006.13247","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2020-06-23T18:02:03Z","cross_cats_sorted":[],"title_canon_sha256":"8eaac5dbe99c1c44e22dcf71b72323c2bfd8024a796a9cda862241b71dd187a7","abstract_canon_sha256":"aa5dc7cffeab43db2ef44d2cea176fa8b3bc5d1dbc223e96743ec12853c5d2b4"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:13:13.693159Z","signature_b64":"0tch8lP1C9ciRA/+MKwBKH52QHUoub6HZ3B/yScd/ZusuTgqEqvegk7KeO2rPgr3CTBnw55W0q62Yanu59R/DQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"1b753b9bcf5acd6922bdda85debf01e8df715dbe7c2d6b95986b43ba13bb2c88","last_reissued_at":"2026-07-05T01:13:13.692701Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:13:13.692701Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Lanczos equation on light-like hypersurfaces in a cosmologically viable class of kinetic gravity braiding theories","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"gr-qc","authors_text":"Bence Racsk\\'o, L\\'aszl\\'o \\'Arp\\'ad Gergely","submitted_at":"2020-06-23T18:02:03Z","abstract_excerpt":"We discuss junction conditions across null hypersurfaces in a class of scalar-tensor gravity theories with i) second order dynamics, ii) obeying the recent constraints imposed by gravitational wave propagation, and iii) allowing for a cosmologically viable evolution. These requirements select kinetic gravity braiding models with linear kinetic term dependence and scalar field-dependent coupling to curvature. We explore a pseudo-orthonormal tetrad and its allowed gauge fixing, with one null vector standing as the normal, the other being transversal to the hypersurface. We derive a generalizatio"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2006.13247","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/2006.13247/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":"2006.13247","created_at":"2026-07-05T01:13:13.692761+00:00"},{"alias_kind":"arxiv_version","alias_value":"2006.13247v1","created_at":"2026-07-05T01:13:13.692761+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2006.13247","created_at":"2026-07-05T01:13:13.692761+00:00"},{"alias_kind":"pith_short_12","alias_value":"DN2TXG6PLLGW","created_at":"2026-07-05T01:13:13.692761+00:00"},{"alias_kind":"pith_short_16","alias_value":"DN2TXG6PLLGWSIV5","created_at":"2026-07-05T01:13:13.692761+00:00"},{"alias_kind":"pith_short_8","alias_value":"DN2TXG6P","created_at":"2026-07-05T01:13:13.692761+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":1,"internal_anchor_count":1,"sample":[{"citing_arxiv_id":"2504.14229","citing_title":"K-essence sources of Kerr-Schild spacetimes","ref_index":48,"is_internal_anchor":true}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/DN2TXG6PLLGWSIV53KC55PYB5D","json":"https://pith.science/pith/DN2TXG6PLLGWSIV53KC55PYB5D.json","graph_json":"https://pith.science/api/pith-number/DN2TXG6PLLGWSIV53KC55PYB5D/graph.json","events_json":"https://pith.science/api/pith-number/DN2TXG6PLLGWSIV53KC55PYB5D/events.json","paper":"https://pith.science/paper/DN2TXG6P"},"agent_actions":{"view_html":"https://pith.science/pith/DN2TXG6PLLGWSIV53KC55PYB5D","download_json":"https://pith.science/pith/DN2TXG6PLLGWSIV53KC55PYB5D.json","view_paper":"https://pith.science/paper/DN2TXG6P","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2006.13247&json=true","fetch_graph":"https://pith.science/api/pith-number/DN2TXG6PLLGWSIV53KC55PYB5D/graph.json","fetch_events":"https://pith.science/api/pith-number/DN2TXG6PLLGWSIV53KC55PYB5D/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/DN2TXG6PLLGWSIV53KC55PYB5D/action/timestamp_anchor","attest_storage":"https://pith.science/pith/DN2TXG6PLLGWSIV53KC55PYB5D/action/storage_attestation","attest_author":"https://pith.science/pith/DN2TXG6PLLGWSIV53KC55PYB5D/action/author_attestation","sign_citation":"https://pith.science/pith/DN2TXG6PLLGWSIV53KC55PYB5D/action/citation_signature","submit_replication":"https://pith.science/pith/DN2TXG6PLLGWSIV53KC55PYB5D/action/replication_record"}},"created_at":"2026-07-05T01:13:13.692761+00:00","updated_at":"2026-07-05T01:13:13.692761+00:00"}