{"paper":{"title":"Constraining Lorentz symmetry breaking in bumblebee gravity with extreme mass-ratio inspirals","license":"http://creativecommons.org/licenses/by/4.0/","headline":"Extreme mass-ratio inspirals allow LISA to constrain the bumblebee gravity parameter ell to an uncertainty of order 10 to the minus 4.","cross_cats":[],"primary_cat":"gr-qc","authors_text":"Huajie Gong, Jiliang Jing, Qiyuan Pan, Sheng Long, Zhong-wu Xia, Zhoujian Cao","submitted_at":"2026-05-06T18:40:43Z","abstract_excerpt":"Extreme mass-ratio inspirals (EMRIs), with their long-lived and highly relativistic orbital evolution, can probe strong-field spacetime geometry and provide an important means to test general relativity. In this work, we investigate EMRI waveforms in a Schwarzschild-like black hole spacetime arising in bumblebee gravity, where Lorentz symmetry breaking (LSB) is characterized by a dimensionless parameter $\\ell$. We construct EMRI waveforms within the Augmented Analytic Kludge (AAK) framework using the modified orbital frequencies and fluxes. We find that $\\ell$ significantly affects the orbital"},"claims":{"count":4,"items":[{"kind":"strongest_claim","text":"Our results show that the bumblebee parameter ℓ can be constrained with an uncertainty of order O(10^{-4}) by LISA.","source":"verdict.strongest_claim","status":"machine_extracted","claim_id":"C1","attestation":"unclaimed"},{"kind":"weakest_assumption","text":"The Augmented Analytic Kludge framework with modified frequencies and fluxes accurately represents the true waveform in bumblebee gravity without significant higher-order or unmodeled effects.","source":"verdict.weakest_assumption","status":"machine_extracted","claim_id":"C2","attestation":"unclaimed"},{"kind":"one_line_summary","text":"EMRI waveforms in bumblebee gravity allow LISA to constrain the Lorentz symmetry breaking parameter ell at the level of O(10^{-4}).","source":"verdict.one_line_summary","status":"machine_extracted","claim_id":"C3","attestation":"unclaimed"},{"kind":"headline","text":"Extreme mass-ratio inspirals allow LISA to constrain the bumblebee gravity parameter ell to an uncertainty of order 10 to the minus 4.","source":"verdict.pith_extraction.headline","status":"machine_extracted","claim_id":"C4","attestation":"unclaimed"}],"snapshot_sha256":"38a886703bc5547bc737106735f292cfbb0093a1d56119700c436a334481dc04"},"source":{"id":"2605.05362","kind":"arxiv","version":3},"verdict":{"id":"bd9c06c1-f25b-4a41-9d8e-d721a88ad7d5","model_set":{"reader":"grok-4.3"},"created_at":"2026-05-11T01:08:57.664199Z","strongest_claim":"Our results show that the bumblebee parameter ℓ can be constrained with an uncertainty of order O(10^{-4}) by LISA.","one_line_summary":"EMRI waveforms in bumblebee gravity allow LISA to constrain the Lorentz symmetry breaking parameter ell at the level of O(10^{-4}).","pipeline_version":"pith-pipeline@v0.9.0","weakest_assumption":"The Augmented Analytic Kludge framework with modified frequencies and fluxes accurately represents the true waveform in bumblebee gravity without significant higher-order or unmodeled effects.","pith_extraction_headline":"Extreme mass-ratio inspirals allow LISA to constrain the bumblebee gravity parameter ell to an uncertainty of order 10 to the minus 4."},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2605.05362/integrity.json","findings":[],"available":true,"detectors_run":[{"name":"ai_meta_artifact","ran_at":"2026-05-20T10:33:49.972254Z","status":"completed","version":"1.0.0","findings_count":0},{"name":"doi_title_agreement","ran_at":"2026-05-19T21:01:19.493372Z","status":"completed","version":"1.0.0","findings_count":0},{"name":"doi_compliance","ran_at":"2026-05-19T13:39:20.039417Z","status":"completed","version":"1.0.0","findings_count":0}],"snapshot_sha256":"8bcb2a69d467daca482c9f3964005a2180af5809a5b8fdf737c0f66cae1cc2f3"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":2,"snapshot_sha256":"c93c4a187ed35915920f5922fa21e95d35fc9fa5321b06de3c286b1d25d888b4"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}