{
  "abstract": "We propose Four-Sector Cosmology (FSC), a theoretical framework in whichthe observable universe (Sector I) is one of four CPT-symmetric sectors arising froma single quantum fluctuation at t = 0. The four sectors are defined by the signs ofspatial coordinates (x) and temporal direction (t): Sector Coordinates Identification Sector I (+x, +t) Baryonic matter — our observable universe Sector II (−x, +t) Dark energy candidate (w ≈−1 Sector III (+x, −t) Dark matter candidate (time-reversed relic) Sector IV (−x, −t) CPT-conjugate (white-hole source; now mostly decayed) the observable universe (Sector I) is one of four CPT-symmetric sectors arising froma single quantum fluctuation at t = 0. The four sectors are defined by the signs ofspatial coordinates (x) and temporal direction (t): The initial state satisfies exact CPT symmetry: ΩI,0 = ΩII,0 = ΩIII,0 = ΩIV,0 =25%. Starting from this single postulate, FSC simultaneously resolves four majoropen problems in modern cosmology: 1. Baryogenesis: Sector IV decay satisfies all three Sakharov conditions, gen- erating ηb = 6.1 ×10−10, consistent with BBN observations. 2. Dark matter: Sector III survives as a stable relic with ΩIII(t0) = 0.268, matching Planck 2018. 3. Dark energy: Sector II accumulates Sector IV decay energy, growing from 25% to ΩII(t0) = 68.3% — the first derivation of ΩΛ from fundamental sym- metry principles without fine-tuning. 4. Hubble tension: Five-component decomposition yields ∆HFSC0 = 2.69 km/s/Mpc, consistent with the observed 2.6 ±0.7 km/s/Mpc discrepancy. The framework makes five falsifiable predictions testable with DESI DR2, Euclid,Rubin-LSST, LZ, and gravitational-wave standard sirens within the next five years.",
  "abstract_shown": true,
  "affiliations": [
    "AIT Corp. / Soul-Twin Project, Japan"
  ],
  "article_type": null,
  "arxiv": null,
  "author_total": 2,
  "authors": [
    {
      "affs": [
        0
      ],
      "name": "Yoshitaka Katakura"
    },
    {
      "affs": [
        0
      ],
      "name": "Einstein-AI (Soul-Twin Platform)"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/3hdmadks56cm5.bib",
  "cited_by": 21,
  "doi": "10.5281/zenodo.21094856",
  "fulltext_url": null,
  "id": "3hdmadks56cm5",
  "issns": [],
  "landing_url": "https://doi.org/10.5281/zenodo.21094856",
  "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": "W7166814745",
  "pdf_url": null,
  "pmcid": null,
  "pmid": null,
  "published": "2026-07-01",
  "publisher": "European Organization for Nuclear Research",
  "ris": "https://research.draconitic.com/paper/3hdmadks56cm5.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:17:18Z",
      "native_id": "W7166814745",
      "source": "openalex",
      "url": "https://doi.org/10.5281/zenodo.21094856"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "openalex:3103|Cosmology and Gravitation Theories",
      "subfield": "cosmology"
    }
  ],
  "title": "Four-Sector Cosmology: A CPT-Symmetric Resolution of the Hubble Tension, Dark Matter, and Dark Energy",
  "title_text": "Four-Sector Cosmology: A CPT-Symmetric Resolution of the Hubble Tension, Dark Matter, and Dark Energy",
  "type": "preprint",
  "updated_at": "2026-11-08T13:20:39Z",
  "url": "https://research.draconitic.com/paper/3hdmadks56cm5",
  "venue": "Zenodo (CERN European Organization for Nuclear Research)",
  "versions": []
}