{
  "id": "1012.5474",
  "version": "v2",
  "published": "2010-12-25T12:57:48.000Z",
  "updated": "2011-06-15T01:24:25.000Z",
  "title": "Momentum Distribution and Contact of the Unitary Fermi gas",
  "authors": [
    "Joaquín E. Drut",
    "Timo A. Lähde",
    "Timour Ten"
  ],
  "comment": "4 pages, 3 figures. Published version",
  "journal": "Phys.Rev.Lett.106:205302,2011",
  "doi": "10.1103/PhysRevLett.106.205302",
  "categories": [
    "cond-mat.stat-mech",
    "nucl-th"
  ],
  "abstract": "We calculate the momentum distribution n(k) of the Unitary Fermi Gas using Quantum Monte Carlo calculations at finite temperature T/\\epsilon_F as well as in the ground state. At large momenta k/k_F, we find that n(k) falls off as C/k^4, in agreement with the Tan relations. From the asymptotics of n(k), we determine the contact C as a function of T/\\epsilon_F and present a comparison with theory. At low T/\\epsilon_F, we find that C increases with temperature, and we tentatively identify a maximum around T/\\epsilon_F \\simeq 0.4. Our calculations are performed on lattices of spatial extent up to N_x = 14 with a particle number per unit volume of \\simeq 0.03 - 0.07.",
  "revisions": [
    {
      "version": "v2",
      "updated": "2011-06-15T01:24:25.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "67.85.De",
      "67.10.Jn",
      "05.30.Fk"
    ],
    "keywords": [
      "unitary fermi gas",
      "momentum distribution",
      "quantum monte carlo calculations",
      "finite temperature",
      "ground state"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Physical Review Letters",
      "year": 2011,
      "month": "May",
      "volume": 106,
      "number": 20,
      "pages": 205302
    },
    "note": {
      "typesetting": "TeX",
      "pages": 4,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 882889,
      "adsabs": "2011PhRvL.106t5302D"
    }
  }
}