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arXiv · 1510.02209

New fixed points of the renormalisation group for two-body scattering

M. C. Birse·E. Epelbaum·J. Gegelia
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Abstract

We outline a separable matrix ansatz for the potentials in effective field theories of nonrelativistic 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.

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M. C. Birse, E. Epelbaum, J. Gegelia. 2015-10-08. New fixed points of the renormalisation group for two-body scattering. https://doi.org/10.1140/epja%2Fi2016-16026-1

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