{"schema":"pubphys.bundle/1","record":{"author":{"account_ref":null,"orcid":null},"builds_on":[],"content_schema":"pubphys.content.revision/1","content_sha256":"a5ee278e8e78a210cbf9d7296687bd36a538d6622f533d3ed29d7ca19459e57c","created":"2026-10-03T07:17:54Z","files":[],"origin":{"assisted_by":[],"kind":"seed"},"parents":["5475cf5dc5b1a72283d26dc95dc6e00d7ea4e00096a7c6492e409a1816eeb011"],"salt":"b3219b96a74468b1ca05b11716fe1af67af0781e2a932e6c2cc688c76d0effd8","schema":"pubphys.record/2","site":"pubphys.com","target":null,"type":"revision"},"content":{"answer_type":"value","assisted_by":[],"external_id":"amo.rydberg-arrays.string-breaking-rates","kind":"well-posed","literature_status":"partially-resolved","n":"1","parents":[],"plain":"A string of field between two charges can snap by creating a new pair of particles, as in the binding of quarks. Rydberg arrays have shown this snapping, and the task is to measure how fast it happens.","posed_since":"","precise":"For a Rydberg encoding of a (2+1)D $Z2$ or $U(1)$ lattice gauge theory, measure the string-breaking time as a function of string tension $\\sigma$ and matter mass $m$, and compare with semiclassical pair-creation rates of the Schwinger form $\\Gamma \\sim \\exp(-c m^2/\\sigma)$. Answer: measured scaling and constant $c$ with errors.","problem_ref":null,"references":"","settled_by":"A systematic scan of $\\sigma$ and $m$ on a Rydberg array with breaking times compared to tensor-network or exact simulations.","status_note":"String breaking was observed on a (2+1)D Rydberg simulator in 2024 to 2025 (arXiv:2410.16558); quantitative rates and metastability are under study in 2026 (arXiv:2602.22890).","title":"String-breaking rates in Rydberg lattice gauge 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