Convergence and stability of the renormalisation group

Details Convergence and stability of the renormalisation group Convergence and stability of the renormalisation group

2002-08-16

arxiv.org/abs/hep-th/0208117v1

Physics

High Energy Physics

High Energy Physics - Theory

8 pages, 4 figures, uses ActaStyle.cls, invited talk given at RG2002, March 10-16, 2002, Strba, Slowakia

Scientific paper

Within the exact renormalisation group approach, it is shown that stability
properties of the flow are controlled by the choice for the regulator. Equally,
the convergence of the flow is enhanced for specific optimised choices for the
regularisation. As an illustration, we exemplify our reasoning for 3d scalar
theories at criticality. Implications for other theories are discussed.

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