Abstract
We start a nonperturbative study of the Wilson-Kadanoff renormalization group (RG) in weakly coupled massless lattice models. Nonlocal hierarchical models are introduced to mimic the infrared behaviour of the\(\tfrac{1}{2}(\nabla \phi )^2 + \lambda (\nabla \phi )^4\) model and the like. The RG is shown to drive these to the line of fixed points corresponding to the massless\(\tfrac{1}{2}c_\infty (\lambda )(\nabla \phi )^2\) models.
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Communicated by A. Jaffe
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Gawedzki, K., Kupiainen, A. Renormalization group study of a critical lattice model. Commun.Math. Phys. 82, 407–433 (1981). https://doi.org/10.1007/BF01237048
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DOI: https://doi.org/10.1007/BF01237048