{
  "abstract": "Beyond a critical Toner--Tu drive, bacterial turbulence exhibits universal statistics, including a parameter-independent energy spectrum $E(k)\\sim k^{-3/2}$. We show that the same universal state can be reached not only by increasing activity, but also by strengthening nonlinear advection, weakening nonlinear saturation, or tuning the Swift--Hohenberg instability. Motivated by the competition between these processes, we identify the independent dimensionless groups governing the dynamics and construct a Reynolds-like control parameter from them. A single critical value, calibrated from the known activity-controlled transition, predicts the onset of universality along the other parameter routes and collapses them onto a common threshold. These results identify a dynamical organizing parameter for the onset of universal active turbulence and provide a Reynolds-like measure for the Toner--Tu--Swift--Hohenberg universality class.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.39999",
  "author_total": 7,
  "authors": [
    {
      "name": "Kunal Kumar"
    },
    {
      "name": "Sandip Sahoo"
    },
    {
      "name": "Kirti Kashyap"
    },
    {
      "name": "Amal Manoharan"
    },
    {
      "name": "Siddhartha Mukherjee"
    },
    {
      "name": "Anupam Gupta"
    },
    {
      "name": "Samriddhi Sankar Ray"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/59dq2prx9frzz.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.39999",
  "fulltext_url": null,
  "id": "59dq2prx9frzz",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.39999",
  "language": null,
  "licence": "CC-BY-NC-ND-4.0",
  "licence_label": "CC BY-NC-ND 4.0",
  "licence_source": "article",
  "licence_url": "http://creativecommons.org/licenses/by-nc-nd/4.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "cond-mat.soft"
    ],
    [
      "arxiv",
      "nlin.CD"
    ],
    [
      "arxiv",
      "physics.bio-ph"
    ],
    [
      "arxiv",
      "physics.comp-ph"
    ],
    [
      "arxiv",
      "physics.flu-dyn"
    ],
    [
      "openalex",
      "3104|Micro and Nano Robotics"
    ]
  ],
  "openalex": "W7215126767",
  "pdf_url": "https://arxiv.org/pdf/2609.39999",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-30",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/59dq2prx9frzz.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:25:49Z",
      "native_id": "2609.39999",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.39999"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:physics.bio-ph",
      "subfield": "biological-medical"
    },
    {
      "field": "physics",
      "origin": "arxiv:physics.comp-ph",
      "subfield": "computational"
    },
    {
      "field": "physics",
      "origin": "arxiv:cond-mat.soft",
      "subfield": "condensed-matter"
    },
    {
      "field": "physics",
      "origin": "arxiv:physics.flu-dyn",
      "subfield": "fluid-dynamics"
    },
    {
      "field": "physics",
      "origin": "arxiv:nlin.CD",
      "subfield": "statistical-nonlinear"
    }
  ],
  "title": "A Reynolds-like Criterion for the Onset of Universal Active Turbulence",
  "title_text": "A Reynolds-like Criterion for the Onset of Universal Active Turbulence",
  "type": "preprint",
  "updated_at": "2026-10-30T12:25:49Z",
  "url": "https://research.draconitic.com/paper/59dq2prx9frzz",
  "venue": "arXiv",
  "versions": []
}