Beta Function Constraints From Renormalization Group Flows in Spin Systems
نویسنده
چکیده
Inspired by previous work on the constraints that duality imposes on beta functions of spin models, we propose a consistency condition between those functions and RG flows at different points in coupling constant space. We show that this consistency holds for a non self-dual model which admits an exact RG flow, but that it is violated when the RG flow is only approximate. We discuss the use of this deviation as a test for the “goodness” of proposed RG flows in complicated models, and the use of the proposed consistency in suggesting RG equations. e-mail: [email protected]
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