Perturbative dynamics on fuzzy S^2 and RP^2

Details Perturbative dynamics on fuzzy S^2 and RP^2 Perturbative dynamics on fuzzy S^2 and RP^2

2001-02-28

arxiv.org/abs/hep-th/0102212v1

Phys.Lett. B512 (2001) 403-411

Physics

High Energy Physics

High Energy Physics - Theory

14 pages, LaTex2e

Scientific paper

10.1016/S0370-2693(01)00641-4

By considering scalar theories on the fuzzy sphere as matrix models, we construct a renormalization scheme and calculate the one-loop effective action. Because of UV-IR mixing, the two- and the four-point correlators at low energy are not slowly varying functions of external momenta. Interestingly, we also find that field theories on fuzzy RP^2 avoid UV-IR mixing and hence are much more like conventional field theories. We calculate the one-loop beta-function for the O(N) theory on fuzzy RP^2 at large N and show that in addition to the trivial one, it has a nontrivial fixed point that is accessible in perturbation theory.

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