{
  "id": "0903.0426",
  "version": "v2",
  "published": "2009-03-03T02:29:32.000Z",
  "updated": "2009-03-14T22:29:04.000Z",
  "title": "A \"toy\" model in QFT with no lower bound to the energy",
  "authors": [
    "Dan Solomon"
  ],
  "comment": "Minor editorial changes",
  "categories": [
    "quant-ph"
  ],
  "abstract": "In quantum field theory, it is generally assumed that there is a lower bound to the energy, which is normally assumed to the the vacuum state. While this may be a reasonable assumption for a free field it is not necessarily the case for interacting fields. In this paper I will examine a \"toy\" model of a neutral scalar field interacting with a charged scalar field and show that there is no lower bound to the energy in this case.",
  "revisions": [
    {
      "version": "v2",
      "updated": "2009-03-14T22:29:04.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "lower bound",
      "quantum field theory",
      "neutral scalar field interacting",
      "vacuum state",
      "charged scalar field"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 815450,
      "adsabs": "2009arXiv0903.0426S"
    }
  }
}