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A momentum-space Argonne V18 interaction
Journal article   Open access   Peer reviewed

A momentum-space Argonne V18 interaction

S Veerasamy and W. N Polyzou
Physical review. C, Nuclear physics, Vol.84(3), 034003
06/09/2011
DOI: 10.1103/PhysRevC.84.034003
url
https://doi.org/10.1103/PhysRevC.84.034003View
Published (Version of record) Open Access

Abstract

This paper gives a momentum-space representation of the Argonne V18 potential as an expansion in products of spin-isospin operators with scalar coefficient functions of the momentum transfer. Two representations of the scalar coefficient functions for the strong part of the interaction are given. One is as an expansion in an orthonormal basis of rational functions and the other as an expansion in Chebyshev polynomials on different intervals. Both provide practical and efficient representations for computing the momentum-space potential that do not require integration or interpolation. Programs based on both expansions are available as supplementary material. Analytic expressions are given for the scalar coefficient functions of the Fourier transform of the electromagnetic part of the Argonne V18. A simple method for computing the partial-wave projections of these interactions from the operator expressions is also given.
Physics - Nuclear Theory

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