{
  "abstract": "The Zel'dovich-inspired (ZI) transform is a local nonlinear transform of the density field that can Gaussianize the late-time matter field and recover information from higher-order $N$-point correlation functions through its power spectrum, with the parameter $η$ controlling the weighting of higher-order information. Using Fisher-matrix analyses of halo catalogs from the Quijote and Quijote-PNG simulations, we study the redshift-space monopole power spectrum of the ZI-transformed halo density field. The joint statistic $P_{\\rm ZI,0}$, constructed from three representative transforms with $η=1$, $10$, and $+\\infty$, yields substantially tighter constraints than the conventional halo power spectrum $P_{\\rm h,0}$ on standard cosmological parameters, the summed neutrino mass, and primordial non-Gaussianity amplitudes, while outperforming the marked power spectrum for many parameters. We further calibrate a scale-dependent noise correction for the ZI power spectrum, with an effective noise amplitude that depends on wavenumber, and find that the correction further tightens the constraints. In particular, the noise-corrected $P_{\\rm ZI,0}$ improves the constraints on $f_{\\rm NL}^{\\rm equil}$, $f_{\\rm NL}^{\\rm ortho}$, $M_ν$, and $n_{\\rm s}$ by factors of $5.6$, $5.5$, $5.2$, and $5.8$, respectively, relative to $P_{\\rm h,0}$. These results demonstrate the potential of ZI power spectra as a complement to standard two-point statistics for extracting nonlinear cosmological information. Our forecasts may be conservative because the halo catalogs have substantially lower number densities than those expected from forthcoming galaxy surveys.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.04486",
  "author_total": 7,
  "authors": [
    {
      "name": "Yu Zhou"
    },
    {
      "name": "Yun Wang"
    },
    {
      "name": "Haozhe Zhang"
    },
    {
      "name": "Matteo Peron"
    },
    {
      "name": "Shiyu Deng"
    },
    {
      "name": "Yu Yu"
    },
    {
      "name": "Xin Zhang"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/9zqcshwt3zj9z.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.04486",
  "fulltext_url": null,
  "id": "9zqcshwt3zj9z",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.04486",
  "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",
      "astro-ph.CO"
    ],
    [
      "openalex",
      "3103|Cosmology and Gravitation Theories"
    ]
  ],
  "openalex": "W7220690553",
  "pdf_url": "https://arxiv.org/pdf/2610.04486",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-03",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/9zqcshwt3zj9z.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:27:01Z",
      "native_id": "2610.04486",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.04486"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.CO",
      "subfield": "cosmology"
    }
  ],
  "title": "Forecasting cosmological constraints from the nonlinear halo density field with Zel'dovich-inspired transform",
  "title_text": "Forecasting cosmological constraints from the nonlinear halo density field with Zel'dovich-inspired transform",
  "type": "preprint",
  "updated_at": "2026-10-30T12:27:01Z",
  "url": "https://research.draconitic.com/paper/9zqcshwt3zj9z",
  "venue": "arXiv",
  "versions": []
}