{"paper":{"title":"Junction Conditions and Gravitational Collapse in Scalar-Tensor-Vector Gravity","license":"http://creativecommons.org/licenses/by/4.0/","headline":"In Scalar-Tensor-Vector Gravity, a collapsing FLRW interior matched through an STVG-charged shell to a static RN-like exterior forms horizons in finite proper time.","cross_cats":[],"primary_cat":"gr-qc","authors_text":"Anant Badal, Debanjan Debnath, Kaushik Bhattacharya","submitted_at":"2026-05-17T19:20:31Z","abstract_excerpt":"We formulate the junction conditions for Scalar-Tensor-Vector Gravity (STVG/MOG), proposed by J.~W.~Moffat. Using these conditions, the theory of gravitational collapse is constructed. In the collapsing process, an interior Friedmann-Lema\\^itre-Robertson-Walker (FLRW) spacetime with baryonic matter and dark energy is matched with an exterior static, spherically symmetric Reissner--Nordstr\\\"{o}m (RN)-like spacetime through a shell that carries STVG-charge. Starting from the standard STVG action, we derive the junction conditions across a boundary that relate the values of the various field quan"},"claims":{"count":4,"items":[{"kind":"strongest_claim","text":"Using the matching conditions and the nature of the collapsing shell, it is shown that a gravitational collapse can proceed in the present situation, and one can have RN-like horizon formation in finite proper time.","source":"verdict.strongest_claim","status":"machine_extracted","claim_id":"C1","attestation":"unclaimed"},{"kind":"weakest_assumption","text":"The exterior spacetime is assumed to be a static, spherically symmetric Reissner-Nordström-like solution of the STVG field equations, with the shell carrying an STVG-charge that enables the interior FLRW to match smoothly.","source":"verdict.weakest_assumption","status":"machine_extracted","claim_id":"C2","attestation":"unclaimed"},{"kind":"one_line_summary","text":"Derives junction conditions in STVG/MOG and constructs two models of gravitational collapse that form extremal or sub-extremal RN-like black holes.","source":"verdict.one_line_summary","status":"machine_extracted","claim_id":"C3","attestation":"unclaimed"},{"kind":"headline","text":"In Scalar-Tensor-Vector Gravity, a collapsing FLRW interior matched through an STVG-charged shell to a static RN-like exterior forms horizons in finite proper time.","source":"verdict.pith_extraction.headline","status":"machine_extracted","claim_id":"C4","attestation":"unclaimed"}],"snapshot_sha256":"2b79f4507b998c1fb9b7e56812ba654234c30ecf9e97ccc18e2a23993c68a54b"},"source":{"id":"2605.17615","kind":"arxiv","version":1},"verdict":{"id":"34b796a4-fdbc-425c-bacf-fcbfdf7fe5ad","model_set":{"reader":"grok-4.3"},"created_at":"2026-05-19T22:53:03.979198Z","strongest_claim":"Using the matching conditions and the nature of the collapsing shell, it is shown that a gravitational collapse can proceed in the present situation, and one can have RN-like horizon formation in 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