{
  "abstract": "We present the cosmological analysis of the one-dimensional Lyman- α flux power spectrum from the first data release of the Dark Energy Spectroscopic Instrument (DESI). We capture the dependence of the signal on cosmology and intergalactic medium physics using an emulator trained on a cosmological suite of hydrodynamical simulations, and we correct its predictions for the impact of astrophysical contaminants and systematics, many of these not considered in previous analyses. We employ this framework to constrain the amplitude and logarithmic slope of the linear matter power spectrum at k ★ = 0.009 km -1 s and redshift z = 3, obtaining Δ 2 ★ = 0.379 ± 0.032 and n ★ = -2.309 ± 0.019 https://github.com/igmhub/cobaya_lya_p1d . The robustness of these constraints is validated through the analysis of mocks and a large number of alternative data analysis variations, with cosmological parameters kept blinded throughout the validation process. We then combine our results with constraints from DESI BAO and temperature, polarization, and lensing measurements from Planck , ACT, and SPT-3G to set constraints on ΛCDM extensions. While our measurements do not significantly tighten the limits on the sum of neutrino masses from the combination of these probes, they sharpen the constraints on the effective number of relativistic species, N eff = 3.02 ± 0.10, the running of the spectral index, α s = 0.0014 ± 0.0041, and the running of the running, β s = -0.0006 ± 0.0048, by a factor of 1.18, 1.27, and 1.90, respectively. We conclude by outlining the improvements needed to fully reach the level of confidence implied by these uncertainties.",
  "abstract_shown": true,
  "affiliations": [
    "Institut de Física d'Altes Energies (IFAE), The Barcelona Institute of Science and Technology, Edifici Cn, Campus UAB, 08193, Bellaterra (Barcelona),",
    "Institució Catalana de Recerca i Estudis Avançats, Passeig de Lluís Companys, 23, 08010 Barcelona,",
    "Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720,",
    "IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette,",
    "Center for Astrophysics | Harvard & Smithsonian, 60 Garden Street, Cambridge, MA 02138,",
    "NASA Einstein Fellow",
    "Center for Cosmology and AstroParticle Physics, The Ohio State University, 191 West Woodruff Avenue, Columbus, OH 43210,",
    "Department of Astronomy, The Ohio State University, 4055 McPherson Laboratory, 140 W 18th Avenue, Columbus, OH 43210,",
    "Department of Physics, The Ohio State University, 191 West Woodruff Avenue, Columbus, OH 43210,",
    "The Ohio State University, Columbus, 43210 OH,",
    "Université Clermont-Auvergne, CNRS, LPCA, 63000 Clermont-Ferrand,",
    "University Observatory, Faculty of Physics, Ludwig-Maximilians-Universität, Scheinerstr. 1, 81677 München,",
    "Excellence Cluster ORIGINS, Boltzmannstrasse 2, D-85748 Garching,",
    "Department of Physics, Boston University, 590 Commonwealth Avenue, Boston, MA 02215,",
    "Dipartimento di Fisica “Aldo Pontremoli”, Università degli Studi di Milano, Via Celoria 16, I-20133 Milano,",
    "INAF-Osservatorio Astronomico di Brera, Via Brera 28, 20122 Milano,",
    "Department of Physics & Astronomy, University College London, Gower Street, London, WC1E 6BT,",
    "Instituto de Física, Universidad Nacional Autónoma de México, Circuito de la Investigación Científica, Ciudad Universitaria, Cd. de México C. P. 04510,",
    "University of California, Berkeley, 110 Sproul Hall #5800 Berkeley, CA 94720,",
    "Departamento de Física, Universidad de los Andes, Cra. 1 No. 18A-10, Edificio Ip, CP 111711, Bogotá,",
    "Observatorio Astronómico, Universidad de los Andes, Cra. 1 No. 18A-10, Edificio H, CP 111711 Bogotá,",
    "Institut d'Estudis Espacials de Catalunya (IEEC), c/ Esteve Terradas 1, Edifici RDIT, Campus PMT-UPC, 08860 Castelldefels,",
    "Institute of Cosmology and Gravitation, University of Portsmouth, Dennis Sciama Building, Portsmouth, PO1 3FX,",
    "Institute of Space Sciences, ICE-CSIC, Campus UAB, Carrer de Can Magrans s/n, 08913 Bellaterra, Barcelona,",
    "University of Virginia, Department of Astronomy, Charlottesville, VA 22904,",
    "Departamento de Física, DCI-Campus León, Universidad de Guanajuato, Loma del Bosque 103, León, Guanajuato C. P. 37150,",
    "Fermi National Accelerator Laboratory, PO Box 500, Batavia, IL 60510,",
    "Department of Astronomy, The University of Texas at Austin, 2515 Speedway Boulevard, Austin, TX 78712,",
    "Institut d'Astrophysique de Paris, 98 bis boulevard Arago, 75014 Paris,",
    "Department of Physics, The University of Texas at Dallas, 800 W. Campbell Rd., Richardson, TX 75080,",
    "NSF NOIRLab, 950 N. Cherry Ave., Tucson, AZ 85719,",
    "Department of Physics and Astronomy, University of California, Irvine, 92697,",
    "Sorbonne Université, CNRS/IN2P3, Laboratoire de Physique Nucléaire et de Hautes Energies (LPNHE), FR-75005 Paris,",
    "Department of Astronomy and Astrophysics, UCO/Lick Observatory, University of California, 1156 High Street, Santa Cruz, CA 95064,",
    "Department of Astronomy and Astrophysics, University of California, Santa Cruz, 1156 High Street, Santa Cruz, CA 95065,",
    "Departament de Física, Serra Húnter, Universitat Autònoma de Barcelona, 08193 Bellaterra (Barcelona),",
    "Department of Physics and Astronomy, Siena University, 515 Loudon Road, Loudonville, NY 12211,",
    "Instituto Avanzado de Cosmología A. C., San Marcos 11 - Atenas 202. Magdalena Contreras. Ciudad de México C. P. 10720,",
    "Department of Physics and Astronomy, University of Waterloo, 200 University Ave W, Waterloo, ON N2L 3G1,",
    "Perimeter Institute for Theoretical Physics, 31 Caroline St. North, Waterloo, ON N2L 2Y5,"
  ],
  "article_type": null,
  "arxiv": null,
  "author_total": 66,
  "authors": [
    {
      "affs": [
        0
      ],
      "name": "J. Chaves-Montero",
      "orcid": "0000-0002-9553-4261"
    },
    {
      "affs": [
        1,
        0
      ],
      "name": "Andreu Font-Ribera",
      "orcid": "0000-0002-3033-7312"
    },
    {
      "affs": [
        2
      ],
      "name": "Patrick McDonald",
      "orcid": "0000-0001-8346-8394"
    },
    {
      "affs": [
        3
      ],
      "name": "Eric Armengaud",
      "orcid": "0000-0001-7600-5148"
    },
    {
      "affs": [
        3
      ],
      "name": "D. Chebat",
      "orcid": "0009-0006-7300-6616"
    },
    {
      "affs": [
        4,
        5
      ],
      "name": "C. García-Quintero",
      "orcid": "0000-0003-1481-4294"
    },
    {
      "affs": [
        6,
        7,
        8,
        9
      ],
      "name": "Naim Göksel Karaçaylı",
      "orcid": "0000-0001-7336-8912"
    },
    {
      "affs": [
        10
      ],
      "name": "C. Ravoux",
      "orcid": "0000-0002-3500-6635"
    },
    {
      "affs": [
        0
      ],
      "name": "S. Satyavolu"
    },
    {
      "affs": [
        11
      ],
      "name": "Nils Schöneberg",
      "orcid": "0000-0002-7873-0404"
    },
    {
      "affs": [
        12,
        11
      ],
      "name": "Michael R. Walther",
      "orcid": "0000-0002-1748-3745"
    },
    {
      "affs": [
        2
      ],
      "name": "J. Aguilar",
      "orcid": "0000-0003-0822-452X"
    },
    {
      "affs": [
        13
      ],
      "name": "Steven P. Ahlen",
      "orcid": "0000-0001-6098-7247"
    },
    {
      "affs": [
        2
      ],
      "name": "S. Bailey",
      "orcid": "0000-0003-4162-6619"
    },
    {
      "affs": [
        14,
        15
      ],
      "name": "D. Bianchi",
      "orcid": "0000-0001-9712-0006"
    },
    {
      "affs": [
        16
      ],
      "name": "D. Brooks",
      "orcid": "0000-0002-8458-5047"
    },
    {
      "affs": [
        2
      ],
      "name": "T. Claybaugh",
      "orcid": "0000-0002-5024-6987"
    },
    {
      "affs": [
        2
      ],
      "name": "Andrei Cuceu",
      "orcid": "0000-0002-2169-0595"
    },
    {
      "affs": [
        17
      ],
      "name": "Axel de la Macorra",
      "orcid": "0000-0002-1769-1640"
    },
    {
      "affs": [
        16
      ],
      "name": "P. Doel",
      "orcid": "0000-0002-6397-4457"
    },
    {
      "affs": [
        2,
        18
      ],
      "name": "Simone Ferraro",
      "orcid": "0000-0003-4992-7854"
    },
    {
      "affs": [
        19,
        20
      ],
      "name": "J. E. Forero-Romero",
      "orcid": "0000-0002-2890-3725"
    },
    {
      "affs": [
        21,
        22,
        23
      ],
      "name": "ENRIQUE GAZTAÑAGA",
      "orcid": "0000-0001-9632-0815"
    },
    {
      "affs": [
        24
      ],
      "name": "Satya Gontcho A Gontcho",
      "orcid": "0000-0003-3142-233X"
    },
    {
      "affs": [
        25
      ],
      "name": "Alma X. González‐Morales",
      "orcid": "0000-0003-4089-6924"
    },
    {
      "affs": [
        26
      ],
      "name": "Gaston Gutierrez",
      "orcid": "0000-0003-0825-0517"
    },
    {
      "affs": [
        2
      ],
      "name": "J. Guy",
      "orcid": "0000-0001-9822-6793"
    },
    {
      "affs": [
        27
      ],
      "name": "ChangHoon Hahn",
      "orcid": "0000-0003-1197-0902"
    },
    {
      "affs": [
        3,
        28
      ],
      "name": "H. K. Herrera-Alcantar",
      "orcid": "0000-0002-9136-9609"
    },
    {
      "affs": [
        6,
        8,
        9
      ],
      "name": "K. Honscheid",
      "orcid": "0000-0002-6550-2023"
    },
    {
      "affs": [
        29
      ],
      "name": "Mustapha Ishak",
      "orcid": "0000-0002-6024-466X"
    },
    {
      "affs": [
        30
      ],
      "name": "R. R. Joyce",
      "orcid": "0000-0003-0201-5241"
    },
    {
      "affs": [
        30
      ],
      "name": "Stéphanie Juneau",
      "orcid": "0000-0002-0000-2394"
    },
    {
      "affs": [
        31
      ],
      "name": "David P. Kirkby",
      "orcid": "0000-0002-8828-5463"
    },
    {
      "affs": [
        2
      ],
      "name": "Anthony Kremin",
      "orcid": "0000-0001-6356-7424"
    },
    {
      "affs": [
        16
      ],
      "name": "O. Lahav",
      "orcid": "0000-0002-1134-9035"
    },
    {
      "affs": [
        9
      ],
      "name": "C. Lamman",
      "orcid": "0000-0002-6731-9329"
    },
    {
      "affs": [
        2
      ],
      "name": "Martin Landriau",
      "orcid": "0000-0003-1838-8528"
    },
    {
      "affs": [
        3
      ],
      "name": "J.M. Le Goff"
    },
    {
      "affs": [
        32
      ],
      "name": "Laurent Le Guillou",
      "orcid": "0000-0001-7178-8868"
    },
    {
      "affs": [
        33,
        34
      ],
      "name": "Alexie Leauthaud",
      "orcid": "0000-0002-3677-3617"
    },
    {
      "affs": [
        2
      ],
      "name": "M. E. Levi",
      "orcid": "0000-0003-1887-1018"
    },
    {
      "affs": [
        35,
        0
      ],
      "name": "Marc Manera",
      "orcid": "0000-0003-4962-8934"
    },
    {
      "affs": [
        6,
        7,
        9
      ],
      "name": "Paul Martini",
      "orcid": "0000-0002-4279-4182"
    },
    {
      "affs": [
        30
      ],
      "name": "Aaron Meisner",
      "orcid": "0000-0002-1125-7384"
    },
    {
      "affs": [
        1,
        0
      ],
      "name": "R. Miquel",
      "orcid": "0000-0002-6610-4836"
    },
    {
      "affs": [
        36
      ],
      "name": "John Moustakas",
      "orcid": "0000-0002-2733-4559"
    },
    {
      "affs": [
        22
      ],
      "name": "S. Nadathur",
      "orcid": "0000-0001-9070-3102"
    },
    {
      "affs": [
        25,
        37
      ],
      "name": "Gustavo Niz",
      "orcid": "0000-0002-1544-8946"
    },
    {
      "affs": [
        3,
        2
      ],
      "name": "N. Palanque‐Delabrouille",
      "orcid": "0000-0003-3188-784X"
    },
    {
      "affs": [
        38,
        39
      ],
      "name": "Will J. Percival",
      "orcid": "0000-0002-0644-5727"
    },
    {
      "name": "Francisco Prada",
      "orcid": "0000-0001-7145-8674"
    },
    {
      "name": "Ignasi Pérez-Ràfols",
      "orcid": "0000-0001-6979-0125"
    },
    {
      "name": "G. Rossi"
    },
    {
      "name": "Eusebio Sanchez",
      "orcid": "0000-0002-9646-8198"
    },
    {
      "affs": [
        2
      ],
      "name": "David J. Schlegel",
      "orcid": "0000-0002-5042-5088"
    },
    {
      "name": "Michael S. Schubnell",
      "orcid": "0000-0001-9504-2059"
    },
    {
      "name": "Hee‐Jong Seo",
      "orcid": "0000-0002-6588-3508"
    },
    {
      "affs": [
        2
      ],
      "name": "Joseph Harry Silber",
      "orcid": "0000-0002-3461-0320"
    },
    {
      "affs": [
        30
      ],
      "name": "David Sprayberry",
      "orcid": "0000-0001-7583-6441"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/dnvc6tbx2zyet.bib",
  "cited_by": 19,
  "doi": "10.1088/1475-7516/2026/06/040",
  "fulltext_url": null,
  "id": "dnvc6tbx2zyet",
  "issns": [
    "1475-7508",
    "1475-7516"
  ],
  "landing_url": "https://doi.org/10.1088/1475-7516/2026/06/040",
  "language": "en",
  "licence": "CC-BY",
  "licence_label": "CC BY",
  "licence_source": "journal",
  "licence_url": "https://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "openalex",
      "3103|Cosmology and Gravitation Theories"
    ]
  ],
  "openalex": "W7165015485",
  "pdf_url": "https://iopscience.iop.org/article/10.1088/1475-7516/2026/06/040/pdf",
  "pmcid": null,
  "pmid": null,
  "published": "2026-06-01",
  "publisher": "Institute of Physics",
  "ris": "https://research.draconitic.com/paper/dnvc6tbx2zyet.ris",
  "sources": [
    {
      "first_seen": "2026-11-07T13:20:45Z",
      "native_id": "W7165015485",
      "source": "openalex",
      "url": "https://doi.org/10.1088/1475-7516/2026/06/040"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "openalex:3103|Cosmology and Gravitation Theories",
      "subfield": "cosmology"
    }
  ],
  "title": "Cosmological analysis of the DESI DR1 Ly α 1D power spectrum",
  "title_text": "Cosmological analysis of the DESI DR1 Ly α 1D power spectrum",
  "type": "peer-reviewed",
  "updated_at": "2026-11-07T13:20:45Z",
  "url": "https://research.draconitic.com/paper/dnvc6tbx2zyet",
  "venue": "Journal of Cosmology and Astroparticle Physics",
  "versions": []
}