{"paper":{"title":"Universal dynamics from a single-particle dark state","license":"http://creativecommons.org/licenses/by/4.0/","headline":"A single-particle dark state at zero momentum in a dissipative spin chain leads to universal many-body scaling dynamics at long times.","cross_cats":["cond-mat.stat-mech","quant-ph"],"primary_cat":"cond-mat.quant-gas","authors_text":"Arghavan Safavi-Naini, Johannes Schachenmayer, Mohammad Maghrebi, Ruben Daraban","submitted_at":"2026-05-15T18:00:03Z","abstract_excerpt":"Open quantum systems can host dark or subradiant states whose decay is highly suppressed. While these states have been extensively studied in the few-excitation regime, their impact on the many-body dynamics remains largely unexplored. Here, we study a spin chain subject to correlated dissipation on neighboring sites, which admits a single-particle dark state at zero momentum. We show that the single-particle dark state qualitatively alters the many-body dynamics at long times, and identify its distinct universal behavior. While the zero-momentum mode is dark at the single-particle level, it d"},"claims":{"count":4,"items":[{"kind":"strongest_claim","text":"While the zero-momentum mode is dark at the single-particle level, it decays slowly as 1/log t as it becomes dressed by other modes through a dissipation-induced nonlinearity. We demonstrate that the momentum distribution takes a universal scaling form in k sqrt(t), and the total density decays as 1/sqrt(t) log t.","source":"verdict.strongest_claim","status":"machine_extracted","claim_id":"C1","attestation":"unclaimed"},{"kind":"weakest_assumption","text":"The spin chain with correlated dissipation on neighboring sites admits a single-particle dark state at zero momentum whose dressing by other modes through dissipation-induced nonlinearity dominates the long-time many-body dynamics.","source":"verdict.weakest_assumption","status":"machine_extracted","claim_id":"C2","attestation":"unclaimed"},{"kind":"one_line_summary","text":"A single-particle dark state in a dissipating spin chain induces universal long-time many-body dynamics with momentum distribution scaling as k sqrt(t) and density decaying as 1/(sqrt(t) log t).","source":"verdict.one_line_summary","status":"machine_extracted","claim_id":"C3","attestation":"unclaimed"},{"kind":"headline","text":"A single-particle dark state at zero momentum in a dissipative spin chain leads to universal many-body scaling dynamics at long times.","source":"verdict.pith_extraction.headline","status":"machine_extracted","claim_id":"C4","attestation":"unclaimed"}],"snapshot_sha256":"3bbc5e5393540591bc552db2062cd5bb7ed205309956725de2d264b3f7711675"},"source":{"id":"2605.16494","kind":"arxiv","version":1},"verdict":{"id":"30f5a536-f56d-4547-9af7-879a8ad3ead9","model_set":{"reader":"grok-4.3"},"created_at":"2026-05-19T21:29:38.351929Z","strongest_claim":"While the zero-momentum mode is dark at the single-particle level, it decays slowly as 1/log t as it becomes dressed by other modes through a dissipation-induced nonlinearity. We demonstrate that the momentum distribution takes a universal scaling form in k sqrt(t), and the total density decays as 1/sqrt(t) log t.","one_line_summary":"A single-particle dark state in a dissipating spin chain induces universal long-time many-body dynamics with momentum distribution scaling as k sqrt(t) and density decaying as 1/(sqrt(t) log t).","pipeline_version":"pith-pipeline@v0.9.0","weakest_assumption":"The spin chain with correlated dissipation on neighboring sites admits a single-particle dark state at zero momentum whose dressing by other modes through dissipation-induced nonlinearity dominates the long-time many-body dynamics.","pith_extraction_headline":"A single-particle dark state at zero momentum in a dissipative spin chain leads to universal many-body scaling dynamics at long times."},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2605.16494/integrity.json","findings":[],"available":true,"detectors_run":[{"name":"doi_title_agreement","ran_at":"2026-05-19T22:01:23.167529Z","status":"completed","version":"1.0.0","findings_count":0},{"name":"doi_compliance","ran_at":"2026-05-19T21:41:17.048154Z","status":"completed","version":"1.0.0","findings_count":0},{"name":"ai_meta_artifact","ran_at":"2026-05-19T19:33:23.101992Z","status":"skipped","version":"1.0.0","findings_count":0},{"name":"claim_evidence","ran_at":"2026-05-19T19:21:57.015011Z","status":"completed","version":"1.0.0","findings_count":0}],"snapshot_sha256":"9c400a7cbeeb742c55f96c0aad86ca7fea0b9052db71419aac1308ab7c5c7fb5"},"references":{"count":72,"sample":[{"doi":"","year":2018,"title":"Preskill, Quantum2, 79 (2018)","work_id":"c32a053e-3dbb-4f1d-bee8-09b1add5a91a","ref_index":1,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":2008,"title":"S. Diehl, A. Micheli, A. Kantian, B. Kraus, H. P. B¨ uchler, and P. Zoller, Nature Physics4, 878 (2008)","work_id":"96a9058a-ceb5-433d-bf89-306bea3a760b","ref_index":2,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":2009,"title":"F. Verstraete, M. M. Wolf, and J. Ignacio Cirac, Na- ture Physics5, 633 (2009)","work_id":"d80b8722-da40-446c-8565-4ecd2c8ddf86","ref_index":3,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":2022,"title":"P. M. Harrington, E. J. Mueller, and K. W. Murch, Nat Rev Phys4, 660 (2022)","work_id":"4c80bbe3-ca13-4362-8f3d-84e4814c38c5","ref_index":4,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":2025,"title":"L. M. Sieberer, M. Buchhold, J. Marino, and S. Diehl, Rev. Mod. 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