paper

Color Grosse-Wulkenhaar models: One-loop -functions

arXiv:0805.2538 · doi:10.1140/epjc/s10052-008-0708-1

Abstract

The -functions of O(N) and U(N) invariant Grosse-Wulkenhaar models are computed at one loop using the matrix basis. In particular, for ``parallel interactions", the model is proved asymptotically free in the UV limit for , and has a triviality problem or Landau ghost for . The vanishing -function is recovered solely at N=1. We discuss various possible consequences of these results.

14 pages, 6 Figures

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