New fixed points of the renormalisation group for two-body scattering
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We outline a separable matrix ansatz for the potentials in effective field theories of non-relativistic two-body systems with short-range interactions. We use this ansatz to construct new fixed points of the renormalisation-group equation for these potentials. New fixed points indicate a much richer structure than previously recognized in the RG flows of simple short-range potentials.
KeywordsRenormalisation Group Equation Power Counting Critical Surface Renormalisation Group Analysis Functional Renormalisation Group
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