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Limit Cycles in Four Dimensions

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arxiv 1206.2921 v2 pith:W5S242OJ submitted 2012-06-13 hep-th hep-ph

Limit Cycles in Four Dimensions

classification hep-th hep-ph
keywords limitcyclefour-dimensionalgaugetheorybetabeta-functioncalculation
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We present an example of a limit cycle, i.e., a recurrent flow-line of the beta-function vector field, in a unitary four-dimensional gauge theory. We thus prove that beta functions of four-dimensional gauge theories do not produce gradient flows. The limit cycle is established in perturbation theory with a three-loop calculation which we describe in detail.

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. Gradient RG Flow in Scalar-Fermion QFTs

    hep-th 2025-11 conditional novelty 7.0

    RG flow in scalar-fermion theories is gradient through four loops only when the 'beta shift' is included, via over a thousand scheme-independent constraints that hold wherever current data allow a check.

  2. A rich structure of renormalization group flows for Higgs-like models in 4 dimensions

    hep-th 2024-11 reject novelty 5.0

    A two-Higgs-doublet model with SU(2)-based marginal operators produces unavoidable cyclic RG flows, pseudo-unitary behavior below pair-production threshold, and Russian Doll VEVs whose period is fixed by the Koide for...