Convergence and stability of the renormalisation group
Abstract
Description
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.
8 pages, 4 figures, uses ActaStyle.cls, invited talk given at RG2002, March 10-16, 2002, Strba, Slowakia
8 pages, 4 figures, uses ActaStyle.cls, invited talk given at RG2002, March 10-16, 2002, Strba, Slowakia