Resummation and damping in the O(N) model

Details Resummation and damping in the O(N) model Resummation and damping in the O(N) model

2000-10-25

arxiv.org/abs/hep-ph/0010290v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

Talk given at SEWM2000. 5 pages

Scientific paper

In this talk I summarize the one loop and higher loop calculations of the effective equations of motion of the O(N) symmetric scalar model in the linear response approximation. At one loop one finds essential difference in long time behavior for the fields below and above a dynamically generated length scale. A partial resummation assuming quasi-particle propagation seems to cancel the relevance of this scale.

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