Improving the convergence of the chiral expansion for nuclear forces I: Peripheral phases
Year: 2004
Type: preprint
Abstract: We study the two-pion exchange potential at next-to-next-to-leading order in chiral effective field theory. We propose a new cut-off scheme for the pion loop integrals based on spectral-function regularization. We show that this method allows for a consistent implementation of constraints from pion-nucleon scattering. It leads to a much improved description of the partial waves with angular momentum lgreater than or equal to2 as compared to the calculation utilizing dimensional regularization.
Authors: E. Epelbaum, W. Glöckle, Ulf-g. Meißner
Institutions: Ruhr University Bochum, University of Bonn
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W3123701806