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Finite Callan-Symanzik renormalisation for multiple scalar fields (2110.15925v3)
Published 29 Oct 2021 in hep-th and hep-ph
Abstract: We study a finite, divergence free approach to renormalisation originally proposed in the early '70s by Blaer and Young, and Callan. It is based on equations similar to the Callan-Symanzik equations, and introduced in the context of $\lambda \phi4$ theory. We generalise this method to the case of two interacting scalar fields, with obvious generalisation to an arbitrary number of fields.
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