{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2020:3YCT6VAIOUKDFXVBIN4OBCRLXJ","short_pith_number":"pith:3YCT6VAI","schema_version":"1.0","canonical_sha256":"de053f5408751432dea14378e08a2bba7487327a48bc28d26e0b939fef870b07","source":{"kind":"arxiv","id":"2009.11957","version":1},"attestation_state":"computed","paper":{"title":"Caravel: A C++ Framework for the Computation of Multi-Loop Amplitudes with Numerical Unitarity","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-th"],"primary_cat":"hep-ph","authors_text":"B. Page, E. Pascual, F. Febres Cordero, H. Ita, J. Dormans, M. Kraus, M. S. Ruf, S. Abreu, V. Sotnikov","submitted_at":"2020-09-24T21:22:02Z","abstract_excerpt":"We present the first public version of Caravel, a C++17 framework for the computation of multi-loop scattering amplitudes in quantum field theory, based on the numerical unitarity method. Caravel is composed of modules for the $D$-dimensional decomposition of integrands of scattering amplitudes into master and surface terms, the computation of tree-level amplitudes in floating point or finite-field arithmetic, the numerical computation of one- and two-loop amplitudes in QCD and Einstein gravity, and functional reconstruction tools. We provide programs that showcase Caravel's main functionaliti"},"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":"2009.11957","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2020-09-24T21:22:02Z","cross_cats_sorted":["hep-th"],"title_canon_sha256":"4d4d3bdc58e807e4e6995ee88022f3594c1b3b986db003b21dc1c11f3e2e04fa","abstract_canon_sha256":"c2e87062fc4ac60ade0a6e8c3731f50c36b6fca200d5cb17c3a7c7df6a3374b5"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T03:01:10.070429Z","signature_b64":"7V9OTXwoYusTtB4vY2u8heTVAN/tiBhw/TVJsMI8CCOwTFz3PAdGaLJokGkmAdo5fIxZ6jUpEr6DW9p/dU5CCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"de053f5408751432dea14378e08a2bba7487327a48bc28d26e0b939fef870b07","last_reissued_at":"2026-07-05T03:01:10.069922Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T03:01:10.069922Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Caravel: A C++ Framework for the Computation of Multi-Loop Amplitudes with Numerical Unitarity","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-th"],"primary_cat":"hep-ph","authors_text":"B. Page, E. Pascual, F. Febres Cordero, H. Ita, J. Dormans, M. Kraus, M. S. Ruf, S. Abreu, V. Sotnikov","submitted_at":"2020-09-24T21:22:02Z","abstract_excerpt":"We present the first public version of Caravel, a C++17 framework for the computation of multi-loop scattering amplitudes in quantum field theory, based on the numerical unitarity method. Caravel is composed of modules for the $D$-dimensional decomposition of integrands of scattering amplitudes into master and surface terms, the computation of tree-level amplitudes in floating point or finite-field arithmetic, the numerical computation of one- and two-loop amplitudes in QCD and Einstein gravity, and functional reconstruction tools. We provide programs that showcase Caravel's main functionaliti"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2009.11957","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/2009.11957/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":"2009.11957","created_at":"2026-07-05T03:01:10.069978+00:00"},{"alias_kind":"arxiv_version","alias_value":"2009.11957v1","created_at":"2026-07-05T03:01:10.069978+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2009.11957","created_at":"2026-07-05T03:01:10.069978+00:00"},{"alias_kind":"pith_short_12","alias_value":"3YCT6VAIOUKD","created_at":"2026-07-05T03:01:10.069978+00:00"},{"alias_kind":"pith_short_16","alias_value":"3YCT6VAIOUKDFXVB","created_at":"2026-07-05T03:01:10.069978+00:00"},{"alias_kind":"pith_short_8","alias_value":"3YCT6VAI","created_at":"2026-07-05T03:01:10.069978+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":3,"internal_anchor_count":0,"sample":[{"citing_arxiv_id":"2605.25863","citing_title":"Linac: linear algebra with CUDA over finite fields","ref_index":25,"is_internal_anchor":false},{"citing_arxiv_id":"2512.13794","citing_title":"The spectrum of Feynman-integral geometries at two loops","ref_index":142,"is_internal_anchor":false},{"citing_arxiv_id":"2605.04009","citing_title":"Two-loop leading-color QCD corrections for Higgs plus two-jet production in the heavy-top limit","ref_index":43,"is_internal_anchor":false}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/3YCT6VAIOUKDFXVBIN4OBCRLXJ","json":"https://pith.science/pith/3YCT6VAIOUKDFXVBIN4OBCRLXJ.json","graph_json":"https://pith.science/api/pith-number/3YCT6VAIOUKDFXVBIN4OBCRLXJ/graph.json","events_json":"https://pith.science/api/pith-number/3YCT6VAIOUKDFXVBIN4OBCRLXJ/events.json","paper":"https://pith.science/paper/3YCT6VAI"},"agent_actions":{"view_html":"https://pith.science/pith/3YCT6VAIOUKDFXVBIN4OBCRLXJ","download_json":"https://pith.science/pith/3YCT6VAIOUKDFXVBIN4OBCRLXJ.json","view_paper":"https://pith.science/paper/3YCT6VAI","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2009.11957&json=true","fetch_graph":"https://pith.science/api/pith-number/3YCT6VAIOUKDFXVBIN4OBCRLXJ/graph.json","fetch_events":"https://pith.science/api/pith-number/3YCT6VAIOUKDFXVBIN4OBCRLXJ/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/3YCT6VAIOUKDFXVBIN4OBCRLXJ/action/timestamp_anchor","attest_storage":"https://pith.science/pith/3YCT6VAIOUKDFXVBIN4OBCRLXJ/action/storage_attestation","attest_author":"https://pith.science/pith/3YCT6VAIOUKDFXVBIN4OBCRLXJ/action/author_attestation","sign_citation":"https://pith.science/pith/3YCT6VAIOUKDFXVBIN4OBCRLXJ/action/citation_signature","submit_replication":"https://pith.science/pith/3YCT6VAIOUKDFXVBIN4OBCRLXJ/action/replication_record"}},"created_at":"2026-07-05T03:01:10.069978+00:00","updated_at":"2026-07-05T03:01:10.069978+00:00"}