{
  "abstract": "Nonequilibrium electromagnetic fluctuations can generate repulsive Casimir--Lifshitz pressures, but optimizing a cavity at one operating point does not establish that the repulsion survives uncertainty or exceeds ordinary far-field radiation pressure. We formulate a two-sided biased-semiconductor cavity as a constrained max--min problem that maximizes the smaller outward pressure on its two reflectors. In the optically thick-slab limit, identical reflectors admit a symmetric global optimizer, and a passive-reflector bound separates cavity enhancement from the driven far-field plateau. At $300~\\mathrm{K}$, a biased-GaAs cavity with $\\pm10~\\mathrm{nm}$ gap uncertainty and $\\pm0.005$ drive uncertainty sustains a worst-case pressure of $2.257~\\mathrm{mPa}$ with ideal reflectors. Reoptimization with a causal gold response retains $2.164~\\mathrm{mPa}$. The nominal and robust optima lie within $2~\\mathrm{nm}$ of one another, so the main value of the max--min calculation here is a quantitative performance certificate rather than a large geometric redesign. A full finite-slab calculation and an alternative published GaAs response change the reported pressures by at most $1.60\\times10^{-3}\\%$ and $4.44\\times10^{-2}\\%$, respectively. These results establish a reproducible design bound for bilateral nonequilibrium repulsion under dimensional, drive, reflector, and optical-model variations.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.02471",
  "author_total": 2,
  "authors": [
    {
      "name": "Mohamed R. Khodja"
    },
    {
      "name": "Belkacem E. Khodja"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/6ec1fzqn20pkr.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.02471",
  "fulltext_url": null,
  "id": "6ec1fzqn20pkr",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.02471",
  "language": null,
  "licence": "LicenseRef-arXiv-nonexclusive-1.0",
  "licence_label": "arXiv licence",
  "licence_source": "article",
  "licence_url": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "quant-ph"
    ],
    [
      "openalex",
      "3107|Quantum Electrodynamics and Casimir Effect"
    ]
  ],
  "openalex": "W7220390761",
  "pdf_url": "https://arxiv.org/pdf/2610.02471",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-28",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/6ec1fzqn20pkr.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:36:22Z",
      "native_id": "2610.02471",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.02471"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:quant-ph",
      "subfield": "quantum"
    }
  ],
  "title": "Passive-reflector bounds and robust bilateral nonequilibrium Casimir repulsion",
  "title_text": "Passive-reflector bounds and robust bilateral nonequilibrium Casimir repulsion",
  "type": "preprint",
  "updated_at": "2026-11-01T12:20:44Z",
  "url": "https://research.draconitic.com/paper/6ec1fzqn20pkr",
  "venue": "arXiv",
  "versions": []
}