{"work":{"id":"f2041745-ef51-409c-9b23-512a649fb426","openalex_id":null,"doi":null,"arxiv_id":"hep-ph/9203206","raw_key":null,"title":"Solutions to the strong CP problem in a world with gravity","authors":null,"authors_text":"R","year":1992,"venue":"hep-ph","abstract":"We examine the sensitivity of several solutions of the strong-CP problem to violations of global symmetries by Planck scale physics. We find that the Peccei-Quinn solution is extremely sensitive to U(1)_PQ violating operators of dimension less than 10. We construct models in which the PQ symmetry is protected by gauge symmetries to the requisite level.","external_url":"https://arxiv.org/abs/hep-ph/9203206","cited_by_count":null,"metadata_source":"pith","metadata_fetched_at":"2026-06-29T11:03:18.429286+00:00","pith_arxiv_id":"hep-ph/9203206","created_at":"2026-05-11T08:15:59.053550+00:00","updated_at":"2026-06-29T11:03:18.429286+00:00","title_quality_ok":true,"display_title":"Solutions to the strong CP problem in a world with gravity","render_title":"Solutions to the strong CP problem in a world with gravity"},"hub":{"state":{"work_id":"f2041745-ef51-409c-9b23-512a649fb426","tier":"hub","tier_reason":"10+ Pith inbound or 1,000+ external citations","pith_inbound_count":17,"external_cited_by_count":null,"distinct_field_count":2,"first_pith_cited_at":"2009-05-28T19:38:46+00:00","last_pith_cited_at":"2026-05-28T05:14:43+00:00","author_build_status":"not_needed","summary_status":"needed","contexts_status":"needed","graph_status":"needed","ask_index_status":"not_needed","reader_status":"not_needed","recognition_status":"not_needed","updated_at":"2026-07-01T04:00:52.018928+00:00","tier_text":"hub"},"tier":"hub","role_counts":[{"context_role":"background","n":13}],"polarity_counts":[{"context_polarity":"background","n":13}],"runs":{},"summary":{},"graph":{},"authors":[]}}