{"work":{"id":"bb69d0fc-80d0-4ca1-b949-92cc13d18902","openalex_id":"https://openalex.org/W2152747485","doi":"10.1103/physrevd.54.1474","arxiv_id":"gr-qc/9602056","raw_key":null,"title":"Tensor-scalar gravity and binary-pulsar experiments","authors":null,"authors_text":"Damour T and Esposito-Farese G 1996Phys","year":1996,"venue":"gr-qc","abstract":"Some recently discovered nonperturbative strong-field effects in tensor-scalar theories of gravitation are interpreted as a scalar analog of ferromagnetism: \"spontaneous scalarization\". This phenomenon leads to very significant deviations from general relativity in conditions involving strong gravitational fields, notably binary-pulsar experiments. Contrary to solar-system experiments, these deviations do not necessarily vanish when the weak-field scalar coupling tends to zero. We compute the scalar \"form factors\" measuring these deviations, and notably a parameter entering the pulsar timing observable gamma through scalar-field-induced variations of the inertia moment of the pulsar. An exploratory investigation of the confrontation between tensor-scalar theories and binary-pulsar experiments shows that nonperturbative scalar field effects are already very tightly constrained by published data on three binary-pulsar systems. We contrast the probing power of pulsar experiments with that of solar-system ones by plotting the regions they exclude in a generic two-dimensional plane of tensor-scalar theories.","external_url":"https://arxiv.org/abs/gr-qc/9602056","cited_by_count":613,"metadata_source":"pith","metadata_fetched_at":"2026-08-05T02:28:24.338817+00:00","pith_arxiv_id":"gr-qc/9602056","created_at":"2026-05-09T06:19:15.315994+00:00","updated_at":"2026-08-05T02:28:24.338817+00:00","title_quality_ok":true,"display_title":"Tensor-scalar gravity and binary-pulsar experiments","render_title":"Tensor-scalar gravity and binary-pulsar experiments"},"hub":{"state":{"work_id":"bb69d0fc-80d0-4ca1-b949-92cc13d18902","tier":"hub","tier_reason":"10+ Pith inbound or 1,000+ external citations","pith_inbound_count":14,"external_cited_by_count":613,"distinct_field_count":2,"first_pith_cited_at":"2012-02-27T00:47:39+00:00","last_pith_cited_at":"2026-06-29T19:54:35+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":"2026-08-18T20:49:48.364309+00:00","tier_text":"hub"},"tier":"hub","role_counts":[{"context_role":"background","n":6},{"context_role":"method","n":1}],"polarity_counts":[{"context_polarity":"background","n":6},{"context_polarity":"use_method","n":1}],"runs":{},"summary":{},"graph":{},"authors":[]}}