Beta Function Constraints from Renormalization Groups Flows in Spin Systems

Joao D. Correia

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arXiv · cond-mat/9806229

Beta Function Constraints from Renormalization Groups Flows in Spin Systems

Joao D. Correia

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Abstract

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.

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Joao D. Correia. 1998-06-19. Beta Function Constraints from Renormalization Groups Flows in Spin Systems. https://arxiv.org/abs/cond-mat/9806229

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