{
  "id": "0903.4630",
  "version": "v2",
  "published": "2009-03-26T18:10:08.000Z",
  "updated": "2009-12-01T17:10:10.000Z",
  "title": "N=8 Supergravity on the Light Cone",
  "authors": [
    "Renata Kallosh"
  ],
  "comment": "38 p",
  "doi": "10.1103/PhysRevD.80.105022",
  "categories": [
    "hep-th"
  ],
  "abstract": "We construct the generating functional for the light-cone superfield amplitudes in a chiral momentum superspace. It generates the n-point particle amplitudes which on shell are equivalent to the covariant ones. Based on the action depending on unconstrained light-cone chiral scalar superfield, this functional provides a regular d=4 QFT path integral derivation of the Nair-type amplitude constructions. By performing a Fourier transform into the light-cone chiral coordinate superspace we find that the quantum corrections to the superfield amplitudes with n legs are non-local in transverse directions for the diagrams with the number of loops smaller than n(n-1)/2 +1. This suggests the reason why UV infinities, which are proportional to local vertices, cannot appear at least before 7 loops in the light-cone supergraph computations. By combining the E7 symmetry with the supersymmetric recursion relations we argue that the light-cone supergraphs predict all loop finiteness of d=4 N=8 supergravity.",
  "revisions": [
    {
      "version": "v2",
      "updated": "2009-12-01T17:10:10.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "04.65.+e"
    ],
    "keywords": [
      "light cone",
      "supergravity",
      "qft path integral derivation",
      "light-cone supergraph",
      "light-cone chiral coordinate superspace"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Physical Review D",
      "year": 2009,
      "month": "Nov",
      "volume": 80,
      "number": 10,
      "pages": 105022
    },
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 816375,
      "adsabs": "2009PhRvD..80j5022K"
    }
  }
}