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arxiv: 0811.2295 · v1 · submitted 2008-11-14 · ✦ hep-ph

Renormalization and resummation in the O(N) model

classification ✦ hep-ph
keywords modelrenormalizationresummationconsistentdependentdifficultdiscussedexpansion
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In the O(N) model for the large N expansion one needs resummation which makes the renormalization of the model difficult. In the paper it is discussed, how can one perform a consistent perturbation theory at zero as well as at finite temperature with the help of momentum dependent renormalization schemes.

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