{
  "id": "1903.08963",
  "version": "v1",
  "published": "2019-03-21T12:57:50.000Z",
  "updated": "2019-03-21T12:57:50.000Z",
  "title": "New Neutron Star Equation of State with Quark-Hadron Crossover",
  "authors": [
    "Gordon Baym",
    "Shun Furusawa",
    "Tetsuo Hatsuda",
    "Toru Kojo",
    "Hajime Togashi"
  ],
  "comment": "8 pages, 10 figures",
  "categories": [
    "astro-ph.HE",
    "hep-ph",
    "nucl-th"
  ],
  "abstract": "We introduce an improved version of the zero temperature quark-hadron crossover equation of state, QHC19, which describes hadronic matter by the Togashi et al.~equation of state, and quark matter via the Nambu--Jona-Lasinio model with two phenomenological parameters, a short range universal repulsion between quarks, and an attractive diquark interaction, producing pairing of quarks. We describe the physical ranges of these parameters and find a maximum neutron star mass, 2.35 Msun. After a brief review of the construction of the quark-hadronic equation of state by a constrained interpolation between hadronic and quark regimes of dense matter, we delineate the resultant neutron star properties. These agree very well with the inferences of the LIGO/Virgo collaboration, from GW170817, of the pressure vs. baryon density, neutron star radii, and tidal deformabilities.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2019-03-21T12:57:50.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "neutron star equation",
      "zero temperature quark-hadron crossover equation",
      "resultant neutron star properties",
      "maximum neutron star mass",
      "short range universal repulsion"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 8,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}