{
  "abstract": "We study two-dimensional chiral ``dry'' (non-momentum conserving) ``immortal'' (number conserving) ``flocks'' (polar ordered active fluids). Noise driven fluctuations about the noise-free ``time crystal'' state, in which the velocity rotates uniformly in time, obey coupled Kardar-Parisi-Zhang-like equations for the local velocity orientation and a conserved concentration field; the latter field stabilizes order. Orientational fluctuations grow only sub-logarithmically, and number fluctuations are suppressed (``hyperuniform''); both exhibit nonuniversal scaling exponents. There are three different universality classes of disordering transitions.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.41316",
  "author_total": 4,
  "authors": [
    {
      "name": "Sudip Mukherjee"
    },
    {
      "name": "Abhik Basu"
    },
    {
      "name": "Leiming Chen"
    },
    {
      "name": "John Toner"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/58t523gper8kn.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.41316",
  "fulltext_url": null,
  "id": "58t523gper8kn",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.41316",
  "language": null,
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "http://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "cond-mat.stat-mech"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://arxiv.org/pdf/2610.41316",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-30",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/58t523gper8kn.ris",
  "sources": [
    {
      "first_seen": "2026-11-02T12:21:15Z",
      "native_id": "2610.41316",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.41316"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:cond-mat.stat-mech",
      "subfield": "statistical-nonlinear"
    }
  ],
  "title": "Only the immortal can (almost) flock while turning: Two-dimensional chiral immortal flocks, time crystals and non-universal sub-logarithmic roughness",
  "title_text": "Only the immortal can (almost) flock while turning: Two-dimensional chiral immortal flocks, time crystals and non-universal sub-logarithmic roughness",
  "type": "preprint",
  "updated_at": "2026-11-04T15:20:51Z",
  "url": "https://research.draconitic.com/paper/58t523gper8kn",
  "venue": "arXiv",
  "versions": []
}