{
  "annotation_id": "5f92d355-876b-41d7-9389-c147243d3ac5",
  "date_created": "2026-02-17T05:53:20.015000Z",
  "date_modified": "2026-02-17T05:53:20.015000Z",
  "file_hash": "d4b4a8fb70863089da57b821141917fb5a01620782707333469fd5fca2791104",
  "private": false,
  "record": {
    "abstract": "We present observational constraints on the Bound Dark Energy Cold Dark Matter (BDE-CDM) model using DESI DR2 baryon acoustic oscillation measurements combined with Planck CMB data and Type Ia supernovae compilations (PantheonPlus, Union3, DESY5). In BDE-CDM, dark energy originates from the lightest meson field within a supersymmetric SU(3) dark gauge group with $N_f = 6$ flavors, governed by an inverse power-law potential $V(\\phi) = \\Lambda_{c}^{4+2/3} \\phi^{-2/3}$. Unlike $\\Lambda$CDM and $w_0w_a$CDM, the dark energy sector contains no free parameters -- the condensation scale $\\Lambda_c$ and transition epoch $a_c$ are determined by gauge coupling unification constraints. The equation of state evolves from relativistic behavior ($w = 1/3$) before condensation through a kinetic-dominated stiff phase ($w \\simeq 1$), approaching $w_0 = -0.9298 \\pm 0.0003$ at present, with $w \u003e -1$ maintained throughout cosmic history, avoiding phantom-regime instabilities. We obtain $\\Lambda_{c} = 43.93 \\pm 0.13$~eV and $a_c = (2.489 \\pm 0.007) \\times 10^{-6}$, consistent with theoretical predictions. The $w_0$-$w_a$ confidence contours are approximately 10,000 times smaller than those of $w_0w_a$CDM while achieving comparable fits, and remain stable across different supernova datasets. Statistical analysis yields $\\Delta\\mathrm{DIC} = -6.77$ and $\\Delta\\mathrm{AIC} = -8.97$ relative to $\\Lambda$CDM for BAO+DESY5, constituting strong evidence favoring BDE-CDM model. The model predicts distinctive signatures including 25\\% enhancement in the matter power spectrum at $k \\approx 4.3\\,h\\,\\mathrm{Mpc}^{-1}$. These results establish BDE-CDM as a theoretically motivated framework that successfully addresses the DESI-observed preference for dynamical dark energy while connecting particle physics with cosmological observations.",
    "arxiv_id": "2601.08943",
    "authors": [
      "Axel de la Macorra",
      "Jose Agustin Lozano Torres"
    ],
    "categories": [
      "astro-ph.CO"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "title": "Bound Dark Energy: Particle Physics model in alignment with recent DESI cosmological measurements",
    "url": "https://arxiv.org/abs/2601.08943",
    "version": "v1"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "dc5b6784-2301-46c3-a81b-dbe80212eeb6",
    "id": "arXiv Dataset",
    "type": "Model",
    "variant": "snapshot-2026-01-17",
    "version": "0.1.0"
  },
  "user_id": 1000002
}