{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2015:Y5IJRYZKSK7WHCB3KNHADSMRBT","short_pith_number":"pith:Y5IJRYZK","schema_version":"1.0","canonical_sha256":"c75098e32a92bf63883b534e01c9910cc2218fab5b8470e40382ab873f28c9d0","source":{"kind":"arxiv","id":"1503.03436","version":3},"attestation_state":"computed","paper":{"title":"GRChombo : Numerical Relativity with Adaptive Mesh Refinement","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"gr-qc","authors_text":"Eugene A. Lim, Hal Finkel, Katy Clough, Markus Kunesch, Pau Figueras, Saran Tunyasuvunakool","submitted_at":"2015-03-11T18:20:21Z","abstract_excerpt":"In this work, we introduce GRChombo: a new numerical relativity code which incorporates full adaptive mesh refinement (AMR) using block structured Berger-Rigoutsos grid generation. The code supports non-trivial \"many-boxes-in-many-boxes\" mesh hierarchies and massive parallelism through the Message Passing Interface (MPI). GRChombo evolves the Einstein equation using the standard BSSN formalism, with an option to turn on CCZ4 constraint damping if required. The AMR capability permits the study of a range of new physics which has previously been computationally infeasible in a full 3+1 setting, "},"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":"1503.03436","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2015-03-11T18:20:21Z","cross_cats_sorted":[],"title_canon_sha256":"ac1ed7aff41b5c99bd82a558309ec5dac58d05650d73be544aac9326686b14c1","abstract_canon_sha256":"7c0b404109aeccd815ed9e040bc2fffed23c7c1c324b56439f0395efd2ad111d"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:21:13.488585Z","signature_b64":"0dfTZ+Amyl7xbEeV1i9v33U+QD4G99dhf5GRt/ebk/Lhf1omPI7C/vkoS75suaVqT1v5Apna4JvM7IstD+tADg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c75098e32a92bf63883b534e01c9910cc2218fab5b8470e40382ab873f28c9d0","last_reissued_at":"2026-05-18T01:21:13.488077Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:21:13.488077Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"GRChombo : Numerical Relativity with Adaptive Mesh Refinement","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"gr-qc","authors_text":"Eugene A. Lim, Hal Finkel, Katy Clough, Markus Kunesch, Pau Figueras, Saran Tunyasuvunakool","submitted_at":"2015-03-11T18:20:21Z","abstract_excerpt":"In this work, we introduce GRChombo: a new numerical relativity code which incorporates full adaptive mesh refinement (AMR) using block structured Berger-Rigoutsos grid generation. The code supports non-trivial \"many-boxes-in-many-boxes\" mesh hierarchies and massive parallelism through the Message Passing Interface (MPI). GRChombo evolves the Einstein equation using the standard BSSN formalism, with an option to turn on CCZ4 constraint damping if required. The AMR capability permits the study of a range of new physics which has previously been computationally infeasible in a full 3+1 setting, "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1503.03436","kind":"arxiv","version":3},"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":"1503.03436","created_at":"2026-05-18T01:21:13.488149+00:00"},{"alias_kind":"arxiv_version","alias_value":"1503.03436v3","created_at":"2026-05-18T01:21:13.488149+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1503.03436","created_at":"2026-05-18T01:21:13.488149+00:00"},{"alias_kind":"pith_short_12","alias_value":"Y5IJRYZKSK7W","created_at":"2026-05-18T12:29:50.041715+00:00"},{"alias_kind":"pith_short_16","alias_value":"Y5IJRYZKSK7WHCB3","created_at":"2026-05-18T12:29:50.041715+00:00"},{"alias_kind":"pith_short_8","alias_value":"Y5IJRYZK","created_at":"2026-05-18T12:29:50.041715+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":5,"internal_anchor_count":1,"sample":[{"citing_arxiv_id":"2512.15242","citing_title":"Massive boson stars: Stability and GW emission in head-on mergers","ref_index":67,"is_internal_anchor":true},{"citing_arxiv_id":"2604.25582","citing_title":"Lessons from binary dynamics of inspiralling equal-mass boson-star mergers","ref_index":40,"is_internal_anchor":false},{"citing_arxiv_id":"2604.21997","citing_title":"A Physicist's Visit to Exotic Spheres","ref_index":187,"is_internal_anchor":false},{"citing_arxiv_id":"2604.15240","citing_title":"Boson star-black hole binaries: initial data and head-on collisions","ref_index":121,"is_internal_anchor":false},{"citing_arxiv_id":"2605.04224","citing_title":"Black-Hole Scattering in Einstein-scalar-Gauss-Bonnet: Numerical Relativity Meets Analytics","ref_index":64,"is_internal_anchor":false}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/Y5IJRYZKSK7WHCB3KNHADSMRBT","json":"https://pith.science/pith/Y5IJRYZKSK7WHCB3KNHADSMRBT.json","graph_json":"https://pith.science/api/pith-number/Y5IJRYZKSK7WHCB3KNHADSMRBT/graph.json","events_json":"https://pith.science/api/pith-number/Y5IJRYZKSK7WHCB3KNHADSMRBT/events.json","paper":"https://pith.science/paper/Y5IJRYZK"},"agent_actions":{"view_html":"https://pith.science/pith/Y5IJRYZKSK7WHCB3KNHADSMRBT","download_json":"https://pith.science/pith/Y5IJRYZKSK7WHCB3KNHADSMRBT.json","view_paper":"https://pith.science/paper/Y5IJRYZK","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1503.03436&json=true","fetch_graph":"https://pith.science/api/pith-number/Y5IJRYZKSK7WHCB3KNHADSMRBT/graph.json","fetch_events":"https://pith.science/api/pith-number/Y5IJRYZKSK7WHCB3KNHADSMRBT/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/Y5IJRYZKSK7WHCB3KNHADSMRBT/action/timestamp_anchor","attest_storage":"https://pith.science/pith/Y5IJRYZKSK7WHCB3KNHADSMRBT/action/storage_attestation","attest_author":"https://pith.science/pith/Y5IJRYZKSK7WHCB3KNHADSMRBT/action/author_attestation","sign_citation":"https://pith.science/pith/Y5IJRYZKSK7WHCB3KNHADSMRBT/action/citation_signature","submit_replication":"https://pith.science/pith/Y5IJRYZKSK7WHCB3KNHADSMRBT/action/replication_record"}},"created_at":"2026-05-18T01:21:13.488149+00:00","updated_at":"2026-05-18T01:21:13.488149+00:00"}