Is There Physics in Landau Poles ?

Details Is There Physics in Landau Poles ? Is There Physics in Landau Poles ?

1995-02-03

arxiv.org/abs/hep-th/9502020v1

Physics

High Energy Physics

High Energy Physics - Theory

17 pages, plain TeX, no figures

Scientific paper

Triviality and Landau poles are often greeted as harbingers of new physics at 1 TeV. After briefly reviewing the ideas behind this, a model of singular quantum mechanics is introduced. Its ultraviolet structure, as well as some features of its vacuum, related to triviality, very much parallel $\lambda\phi^4$. The model is solvable, exactly and perturbatively, in any dimension. From its analysis we learn that Landau poles do not appear in any exactly computed observable, but only in truncated perturbation theory, when perturbation theory is performed with the wrong sign coupling. If these findings apply to the standard model no new physics at 1 TeV should be expected but only challenges for theorists.

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