Causality and universality in low-energy scattering
Department of Physics, North Carolina State
University, Raleigh, NC
2 Helmholtz-Institut für Strahlen- und Kernphysik (Theorie) and Bethe Center for Theoretical Physics, Universität Bonn, D-53115 Bonn, Germany
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We discuss the generalization of Wigner’s causality bounds and Bethe’s integral formula for the eﬀective range parameter to arbitrary dimension and arbitrary angular momentum. We consider the impact of these constraints on the separation of low- and high-momentum scales and universality in low-energy scattering.
© Owned by the authors, published by EDP Sciences, 2010