Perturbative analysis of the Wess-Zumino flow

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We investigate an interacting supersymmetric gradient flow in the Wess-Zumino model. Thanks to the nonrenormalization theorem and an appropriate initial condition, we find that any correlator of flowed fields is ultraviolet finite. This is shown at all orders of the perturbation theory using the power counting theorem for one-particle irreducible supergraphs. Since the model does not have the gauge symmetry, the mechanism of realizing the ultraviolet finiteness is quite different from that of the Yang-Mills flow, and this could provide further understanding of the gradient flow approach.

31 pages, 2 figures, v2: published version

Journal

  • Physical Review D

    Physical Review D 107 (12), 2023-06-15

    American Physical Society (APS)

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