{"paper":{"title":"Accelerating scaling solutions from dark matter particle creation","license":"http://creativecommons.org/licenses/by/4.0/","headline":"Accelerating scaling attractors emerge only when dark matter particle creation drives energy flow from dark matter to the second fluid.","cross_cats":["astro-ph.CO","math-ph","math.MP"],"primary_cat":"gr-qc","authors_text":"Emmanuel N. Saridakis, Jaume de Haro, Subenoy Chakraborty, Sudip Halder, Supriya Pan, Tapan Saha","submitted_at":"2026-04-23T15:28:34Z","abstract_excerpt":"This article opens new window to obtain accelerating scaling attractors without any need of dark energy. We study cosmological dynamics in a two-fluid system where pressureless dark matter (DM) undergoes adiabatic particle creation and exchanges energy with a barotropic fluid. Considering six widely used interaction prescriptions, we formulate the corresponding autonomous systems in a compact phase space and perform a unified dynamical analysis. We find that accelerating scaling attractors, namely late-time states where both fluids coexist with fixed energy fractions, arise only when the inter"},"claims":{"count":4,"items":[{"kind":"strongest_claim","text":"accelerating scaling attractors, namely late-time states where both fluids coexist with fixed energy fractions, arise only when the interaction is controlled by the DM density and energy flows from DM to the second fluid.","source":"verdict.strongest_claim","status":"machine_extracted","claim_id":"C1","attestation":"unclaimed"},{"kind":"weakest_assumption","text":"The six widely used interaction prescriptions adequately represent the relevant physics and that the adiabatic particle creation rate remains valid at late times; the analysis further assumes a flat FLRW background in standard general relativity.","source":"verdict.weakest_assumption","status":"machine_extracted","claim_id":"C2","attestation":"unclaimed"},{"kind":"one_line_summary","text":"Accelerating scaling attractors where DM and barotropic fluid coexist at late times arise only for DM-density-controlled interactions with energy transfer from DM.","source":"verdict.one_line_summary","status":"machine_extracted","claim_id":"C3","attestation":"unclaimed"},{"kind":"headline","text":"Accelerating scaling attractors emerge only when dark matter particle creation drives energy flow from dark matter to the second fluid.","source":"verdict.pith_extraction.headline","status":"machine_extracted","claim_id":"C4","attestation":"unclaimed"}],"snapshot_sha256":"ff1d207d72a88ff7fe06f23e3d4a423913a3b0a1414a0b95cf7af55c9f8e231e"},"source":{"id":"2604.21770","kind":"arxiv","version":2},"verdict":{"id":"1055ccbc-075f-4c10-b339-75a9ce4b4332","model_set":{"reader":"grok-4.3"},"created_at":"2026-05-09T21:22:12.959622Z","strongest_claim":"accelerating scaling attractors, namely late-time states where both fluids coexist with fixed energy fractions, arise only when the interaction is controlled by the DM density and energy flows from DM to the second fluid.","one_line_summary":"Accelerating scaling attractors where DM and barotropic fluid coexist at late times arise only for DM-density-controlled interactions with energy transfer from DM.","pipeline_version":"pith-pipeline@v0.9.0","weakest_assumption":"The six widely used interaction prescriptions adequately represent the relevant physics and that the adiabatic particle creation rate remains valid at late times; the analysis further assumes a flat FLRW background in standard general relativity.","pith_extraction_headline":"Accelerating scaling attractors emerge only when dark matter particle creation drives energy flow from dark matter to the second fluid."},"integrity":{"clean":false,"summary":{"advisory":1,"critical":0,"by_detector":{"doi_compliance":{"total":1,"advisory":1,"critical":0,"informational":0}},"informational":0},"endpoint":"/pith/2604.21770/integrity.json","findings":[{"note":"DOI in the printed bibliography is fragmented by whitespace or line breaks. 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