{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2008:T2QVOQ4BAUYLRUON6DC6GTY7HS","short_pith_number":"pith:T2QVOQ4B","schema_version":"1.0","canonical_sha256":"9ea15743810530b8d1cdf0c5e34f1f3cab6db64c49184bca7926e0a44a8c58b2","source":{"kind":"arxiv","id":"0811.1163","version":3},"attestation_state":"computed","paper":{"title":"Compact extra-dimensions as solution to the strong CP problem","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-th","authors_text":"F.L. Bezrukov, Y. Burnier","submitted_at":"2008-11-07T17:04:31Z","abstract_excerpt":"We show that the strong CP problem can, in principle, be solved dynamically by adding extra-dimensions with compact topology. To this aim we consider a toy model for QCD, which contains a vacuum angle and a strong CP like problem. We further consider a higher dimensional theory, which has a trivial vacuum structure and which reproduces the perturbative properties of the toy model in the low-energy limit. In the weak coupling regime, where our computations are valid, we show that the vacuum structure of the low-energy action is still trivial and the strong CP problem is solved. No axion-like pa"},"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":"0811.1163","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2008-11-07T17:04:31Z","cross_cats_sorted":[],"title_canon_sha256":"6ac3bf95f613a98b8f3f2784cea9776a7ac21328181474358d9f3976a4fce53b","abstract_canon_sha256":"17f2f87e2c3fcffd794b522b402437a21f61b8113c477cdb9f4c948413eb84f3"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:16:23.225802Z","signature_b64":"kXxNFQq5zI48SGwr/GVDa+Q5NYeDjRySfAfOkDdHy5qVQSvAahuqF3cG7Cqr6pZuHZyaEqg/M59q1z77P8BQDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9ea15743810530b8d1cdf0c5e34f1f3cab6db64c49184bca7926e0a44a8c58b2","last_reissued_at":"2026-05-18T04:16:23.225143Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:16:23.225143Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Compact extra-dimensions as solution to the strong CP problem","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-th","authors_text":"F.L. Bezrukov, Y. Burnier","submitted_at":"2008-11-07T17:04:31Z","abstract_excerpt":"We show that the strong CP problem can, in principle, be solved dynamically by adding extra-dimensions with compact topology. To this aim we consider a toy model for QCD, which contains a vacuum angle and a strong CP like problem. We further consider a higher dimensional theory, which has a trivial vacuum structure and which reproduces the perturbative properties of the toy model in the low-energy limit. In the weak coupling regime, where our computations are valid, we show that the vacuum structure of the low-energy action is still trivial and the strong CP problem is solved. No axion-like pa"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0811.1163","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":"0811.1163","created_at":"2026-05-18T04:16:23.225268+00:00"},{"alias_kind":"arxiv_version","alias_value":"0811.1163v3","created_at":"2026-05-18T04:16:23.225268+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0811.1163","created_at":"2026-05-18T04:16:23.225268+00:00"},{"alias_kind":"pith_short_12","alias_value":"T2QVOQ4BAUYL","created_at":"2026-05-18T12:25:58.018023+00:00"},{"alias_kind":"pith_short_16","alias_value":"T2QVOQ4BAUYLRUON","created_at":"2026-05-18T12:25:58.018023+00:00"},{"alias_kind":"pith_short_8","alias_value":"T2QVOQ4B","created_at":"2026-05-18T12:25:58.018023+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":1,"internal_anchor_count":1,"sample":[{"citing_arxiv_id":"2003.01100","citing_title":"The landscape of QCD axion models","ref_index":101,"is_internal_anchor":true}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/T2QVOQ4BAUYLRUON6DC6GTY7HS","json":"https://pith.science/pith/T2QVOQ4BAUYLRUON6DC6GTY7HS.json","graph_json":"https://pith.science/api/pith-number/T2QVOQ4BAUYLRUON6DC6GTY7HS/graph.json","events_json":"https://pith.science/api/pith-number/T2QVOQ4BAUYLRUON6DC6GTY7HS/events.json","paper":"https://pith.science/paper/T2QVOQ4B"},"agent_actions":{"view_html":"https://pith.science/pith/T2QVOQ4BAUYLRUON6DC6GTY7HS","download_json":"https://pith.science/pith/T2QVOQ4BAUYLRUON6DC6GTY7HS.json","view_paper":"https://pith.science/paper/T2QVOQ4B","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=0811.1163&json=true","fetch_graph":"https://pith.science/api/pith-number/T2QVOQ4BAUYLRUON6DC6GTY7HS/graph.json","fetch_events":"https://pith.science/api/pith-number/T2QVOQ4BAUYLRUON6DC6GTY7HS/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/T2QVOQ4BAUYLRUON6DC6GTY7HS/action/timestamp_anchor","attest_storage":"https://pith.science/pith/T2QVOQ4BAUYLRUON6DC6GTY7HS/action/storage_attestation","attest_author":"https://pith.science/pith/T2QVOQ4BAUYLRUON6DC6GTY7HS/action/author_attestation","sign_citation":"https://pith.science/pith/T2QVOQ4BAUYLRUON6DC6GTY7HS/action/citation_signature","submit_replication":"https://pith.science/pith/T2QVOQ4BAUYLRUON6DC6GTY7HS/action/replication_record"}},"created_at":"2026-05-18T04:16:23.225268+00:00","updated_at":"2026-05-18T04:16:23.225268+00:00"}