Abstract
The Kadanoff-Wilson renormalization group (RG) for a class of hierarchical spin models including small negative φ4 terms in four dimensions are studied by using Gawędzki and Kupiainen's analysis. We prove triviality for the class, namely prove existence of critical trajectory that leads to the Gaussian fixed point.
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Hosaka, K. Triviality of Hierarchical Models with Small Negative φ4 Coupling in Four Dimensions. J Stat Phys 122, 237–253 (2006). https://doi.org/10.1007/s10955-005-8010-1
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DOI: https://doi.org/10.1007/s10955-005-8010-1