{
  "abstract": "Information engines convert information into extractable work through measurements and feedback. We realize an engine that employs information to compress a gas of self-propelled bristle bots. Its work per measurement, $\\bar{W}$, is controlled by the size of the detection region $Δx$ and the probability $p_1$ that this region is vacant. In thermal systems, $\\bar{W}$ follows the universal form $-p_1 \\ln p_1$, whereas the active engine shows a qualitatively modified relation. As particle density increases, the maximum of $\\bar{W}(Δx)$ switches between two distinct operating regimes. Notably, this transition is also found in the solutions that maximize power output for finite-time cycles with dynamics affected by dry friction. We attribute this nonequilibrium feature to the accumulation of active particles near the boundaries.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.01760",
  "author_total": 5,
  "authors": [
    {
      "name": "Laura Hoek"
    },
    {
      "name": "Neta Ben Ari"
    },
    {
      "name": "Rémi Goerlich"
    },
    {
      "name": "Saar Rahav"
    },
    {
      "name": "Yael Roichman"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/fbtpxxhvgvvsz.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.01760",
  "fulltext_url": null,
  "id": "fbtpxxhvgvvsz",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.01760",
  "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.soft"
    ],
    [
      "arxiv",
      "cond-mat.stat-mech"
    ],
    [
      "openalex",
      "3109|Advanced Thermodynamics and Statistical Mechanics"
    ]
  ],
  "openalex": "W7207770832",
  "pdf_url": "https://arxiv.org/pdf/2609.01760",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-01",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/fbtpxxhvgvvsz.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:18:16Z",
      "native_id": "2609.01760",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.01760"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:cond-mat.soft",
      "subfield": "condensed-matter"
    },
    {
      "field": "physics",
      "origin": "arxiv:cond-mat.stat-mech",
      "subfield": "statistical-nonlinear"
    }
  ],
  "title": "Piston-Like Information Engine II: Boundary-Controlled Optimum in Active Matter",
  "title_text": "Piston-Like Information Engine II: Boundary-Controlled Optimum in Active Matter",
  "type": "preprint",
  "updated_at": "2026-10-30T12:18:16Z",
  "url": "https://research.draconitic.com/paper/fbtpxxhvgvvsz",
  "venue": "arXiv",
  "versions": []
}