{
  "id": "1303.4103",
  "version": "v1",
  "published": "2013-03-17T21:09:49.000Z",
  "updated": "2013-03-17T21:09:49.000Z",
  "title": "Quantum quenches and work distributions in ultra-low-density systems",
  "authors": [
    "Yulia E. Shchadilova",
    "Pedro Ribeiro",
    "Masudul Haque"
  ],
  "comment": "4+10 pages, 4+9 figures",
  "journal": "Phys. Rev. Lett. 112, 070601 (2014)",
  "doi": "10.1103/PhysRevLett.112.070601",
  "categories": [
    "cond-mat.stat-mech",
    "cond-mat.mes-hall",
    "cond-mat.quant-gas"
  ],
  "abstract": "We present results on quantum quenches in systems with a fixed number of particles in a large region. We show that the typical differences between local and global quenches present in systems with regular thermodynamic limit are lacking in this low-density limit. In particular, we show that in this limit local quenches may not lead to equilibration to the new ground state, and that global quenches can have power-law work distributions (\"edge singularities\") typically associated with local quenches for finite-density systems. We also show that this regime allows for large edge singularity exponents beyond that allowed by the constraints of the usual thermodynamic limit. This large-exponent singularity has observable consequences in the time evolution, leading to a distinct intermediate power-law regime in time. We demonstrate these results first using local quantum quenches in a low-density Kondo-like system, and additionally through global and local quenches in Bose-Hubbard, Aubry-Andre, and hard-core boson systems in the low-density regime.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2013-03-17T21:09:49.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "05.70.Ln",
      "03.65.Yz",
      "05.30.-d",
      "67.85.-d"
    ],
    "keywords": [
      "quantum quenches",
      "ultra-low-density systems",
      "large edge singularity exponents",
      "global quenches",
      "distinct intermediate power-law regime"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Physical Review Letters",
      "year": 2014,
      "month": "Feb",
      "volume": 112,
      "number": 7,
      "pages": "070601"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 10,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2014PhRvL.112g0601S"
    }
  }
}