{
  "id": "cond-mat/0604109",
  "version": "v4",
  "published": "2006-04-04T23:02:48.000Z",
  "updated": "2010-02-03T19:02:11.000Z",
  "title": "Mutual friction in helium II: a microscopic approach",
  "authors": [
    "H. M. Cataldo"
  ],
  "comment": "Minor changes, enlarged version of the journal article",
  "journal": "Fiz. Nizk. Temp. 35, 1171-1176 (2009) [Low Temp. Phys., 35, 909-913 (2009)]",
  "doi": "10.1063/1.3274809",
  "categories": [
    "cond-mat.stat-mech",
    "cond-mat.supr-con"
  ],
  "abstract": "We develop a microscopic model of mutual friction represented by the dissipative dynamics of a normal fluid flow which interacts with the helical normal modes of vortices comprising a lattice in thermal equilibrium. Such vortices are assumed to interact with the quasiparticles forming the normal fluid through a pseudomomentum-conserving scattering Hamiltonian. We study the approach to equilibrium of the normal fluid flow for temperatures below 1 K, deriving an equation of motion for the quasiparticle pseudomomentum which leads to the expected form predicted by the HVBK equations. We obtain an expression for the mutual friction coefficient $B$ in terms of microscopic parameters, which turns out to be practically independent of the vortex mass for values arising from diverse theories. By comparing our expression of $B$ with previous theoretical estimates, we deduce interesting qualitative features about the excitation of Kelvin modes by the quasiparticle scattering.",
  "revisions": [
    {
      "version": "v4",
      "updated": "2010-02-03T19:02:11.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "microscopic approach",
      "normal fluid flow",
      "mutual friction coefficient",
      "quasiparticle",
      "deduce interesting qualitative features"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "AIP",
      "journal": "Low Temp. Phys."
    },
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}