{
  "id": "2203.01926",
  "version": "v1",
  "published": "2022-03-03T18:58:36.000Z",
  "updated": "2022-03-03T18:58:36.000Z",
  "title": "Gaussian processes and effective field theory of $f(T)$ gravity under the $H_0$ tension",
  "authors": [
    "Xin Ren",
    "Sheng-Feng Yan",
    "Yaqi Zhao",
    "Yi-Fu Cai",
    "Emmanuel N. Saridakis"
  ],
  "comment": "8 pages, 6 figures",
  "categories": [
    "astro-ph.CO",
    "gr-qc",
    "hep-ph",
    "hep-th"
  ],
  "abstract": "We consider the effective field theory formulation of torsional gravity in a cosmological framework to alter the background evolution. Then we use the latest $H_0$ measurement from the SH0ES Team as well as observational Hubble data from cosmic chronometer (CC) and radial baryon acoustic oscillations (BAO) and we reconstruct the $f(T)$ form in a model-independent way by applying Gaussian processes. Since the special square-root term does not affect the evolution at the background level, we finally result to a family of functions that can produce the background evolution required by the data. Finally, performing a fitting using polynomial functions we find an analytic expression that may describe the cosmological evolution in reat agreement with observations.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2022-03-03T18:58:36.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "gaussian processes",
      "radial baryon acoustic oscillations",
      "background evolution",
      "special square-root term",
      "effective field theory formulation"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 8,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}