{
  "id": "0708.2917",
  "version": "v2",
  "published": "2007-08-21T20:48:19.000Z",
  "updated": "2008-01-08T19:02:18.000Z",
  "title": "Rounding by disorder of first-order quantum phase transitions: emergence of quantum critical points",
  "authors": [
    "Pallab Goswami",
    "David Schwab",
    "Sudip Chakravarty"
  ],
  "comment": "Title is modified as requested by the PRL editor, minor stylistic changes, typos corrected, and a few new references added. It is published in PRL",
  "journal": "Phys. Rev. Lett. 100, 015703 (2008)",
  "doi": "10.1103/PhysRevLett.100.015703",
  "categories": [
    "cond-mat.dis-nn",
    "cond-mat.stat-mech"
  ],
  "abstract": "We give a heuristic argument for disorder rounding of a first order quantum phase transition into a continuous phase transition. From both weak and strong disorder analysis of the the N-color quantum Ashkin-Teller model in one spatial dimension, we find that for $N \\geq 3$, the first order transition is rounded to a continuous transition and the physical picture is the same as the random transverse field Ising model for a limited parameter regime. The results are strikingly different from the corresponding classical problem in two dimensions where the fate of the renormalization group flows is a fixed point corresponding to N-decoupled pure Ising models.",
  "revisions": [
    {
      "version": "v2",
      "updated": "2008-01-08T19:02:18.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "64.60.A-",
      "05.10.Cc",
      "05.30.-d",
      "75.50.Lk"
    ],
    "keywords": [
      "first-order quantum phase transitions",
      "quantum critical points",
      "transverse field ising model",
      "first order quantum phase transition"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Physical Review Letters",
      "year": 2008,
      "month": "Jan",
      "volume": 100,
      "number": 1,
      "pages": "015703"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2008PhRvL.100a5703G"
    }
  }
}