{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2013:TOK7UQRG5ZUSYEGHZE6MAQIUQZ","short_pith_number":"pith:TOK7UQRG","schema_version":"1.0","canonical_sha256":"9b95fa4226ee692c10c7c93cc04114867bb4752d33ae018bf57c7db5b5cac6d3","source":{"kind":"arxiv","id":"1302.4290","version":1},"attestation_state":"computed","paper":{"title":"Perturbation theory in (2,2) signature","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-th","authors_text":"George Sterman, Stanislav Srednyak","submitted_at":"2013-02-18T14:35:14Z","abstract_excerpt":"We identify a natural analytic continuation in four dimensions from Minkowski signature to a signature with two time-like momentum components. For two, three and four-point diagrams at fixed external momenta, this continuation can be implemented as a countour deformation that leaves dependence on the momenta unchanged. For arbitrary ultraviolet-finite scalar diagrams it is possible to do two integrals per loop in terms of simple poles in the new signature. This results in a representation of any such diagram as a sum of terms, each with two remaining integrals per loop."},"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":"1302.4290","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2013-02-18T14:35:14Z","cross_cats_sorted":[],"title_canon_sha256":"d55a8cdfcb917ee831ef773dafcdb6f07a970fcbe523b33e93e48a306926f46f","abstract_canon_sha256":"d8e42c86e64e563966594f13c793b1948cc4bf11b63e6762673178639b289e5f"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:24:41.340397Z","signature_b64":"CB+cLaxVPb5KVcjUe1pJ5a/HMYtptcF+srLrqLNa3u1y8/Dg1klf9dTBs+50XVFUQ95bdL6M5XJTnZ7ZefybAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9b95fa4226ee692c10c7c93cc04114867bb4752d33ae018bf57c7db5b5cac6d3","last_reissued_at":"2026-05-18T03:24:41.339812Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:24:41.339812Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Perturbation theory in (2,2) signature","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-th","authors_text":"George Sterman, Stanislav Srednyak","submitted_at":"2013-02-18T14:35:14Z","abstract_excerpt":"We identify a natural analytic continuation in four dimensions from Minkowski signature to a signature with two time-like momentum components. For two, three and four-point diagrams at fixed external momenta, this continuation can be implemented as a countour deformation that leaves dependence on the momenta unchanged. For arbitrary ultraviolet-finite scalar diagrams it is possible to do two integrals per loop in terms of simple poles in the new signature. This results in a representation of any such diagram as a sum of terms, each with two remaining integrals per loop."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1302.4290","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":""},"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":"1302.4290","created_at":"2026-05-18T03:24:41.339896+00:00"},{"alias_kind":"arxiv_version","alias_value":"1302.4290v1","created_at":"2026-05-18T03:24:41.339896+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1302.4290","created_at":"2026-05-18T03:24:41.339896+00:00"},{"alias_kind":"pith_short_12","alias_value":"TOK7UQRG5ZUS","created_at":"2026-05-18T12:28:02.375192+00:00"},{"alias_kind":"pith_short_16","alias_value":"TOK7UQRG5ZUSYEGH","created_at":"2026-05-18T12:28:02.375192+00:00"},{"alias_kind":"pith_short_8","alias_value":"TOK7UQRG","created_at":"2026-05-18T12:28:02.375192+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/TOK7UQRG5ZUSYEGHZE6MAQIUQZ","json":"https://pith.science/pith/TOK7UQRG5ZUSYEGHZE6MAQIUQZ.json","graph_json":"https://pith.science/api/pith-number/TOK7UQRG5ZUSYEGHZE6MAQIUQZ/graph.json","events_json":"https://pith.science/api/pith-number/TOK7UQRG5ZUSYEGHZE6MAQIUQZ/events.json","paper":"https://pith.science/paper/TOK7UQRG"},"agent_actions":{"view_html":"https://pith.science/pith/TOK7UQRG5ZUSYEGHZE6MAQIUQZ","download_json":"https://pith.science/pith/TOK7UQRG5ZUSYEGHZE6MAQIUQZ.json","view_paper":"https://pith.science/paper/TOK7UQRG","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1302.4290&json=true","fetch_graph":"https://pith.science/api/pith-number/TOK7UQRG5ZUSYEGHZE6MAQIUQZ/graph.json","fetch_events":"https://pith.science/api/pith-number/TOK7UQRG5ZUSYEGHZE6MAQIUQZ/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/TOK7UQRG5ZUSYEGHZE6MAQIUQZ/action/timestamp_anchor","attest_storage":"https://pith.science/pith/TOK7UQRG5ZUSYEGHZE6MAQIUQZ/action/storage_attestation","attest_author":"https://pith.science/pith/TOK7UQRG5ZUSYEGHZE6MAQIUQZ/action/author_attestation","sign_citation":"https://pith.science/pith/TOK7UQRG5ZUSYEGHZE6MAQIUQZ/action/citation_signature","submit_replication":"https://pith.science/pith/TOK7UQRG5ZUSYEGHZE6MAQIUQZ/action/replication_record"}},"created_at":"2026-05-18T03:24:41.339896+00:00","updated_at":"2026-05-18T03:24:41.339896+00:00"}