Regularization Methods for Nuclear Lattice Effective Field Theory
Nuclear Theory
2015-06-26 v2 High Energy Physics - Lattice
High Energy Physics - Phenomenology
Abstract
We investigate Nuclear Lattice Effective Field Theory for the two-body system for several lattice spacings at lowest order in the pionless as well as in the pionful theory. We discuss issues of regularizations and predictions for the effective range expansion. In the pionless case, a simple Gaussian smearing allows to demonstrate lattice spacing independence over a wide range of lattice spacings. We show that regularization methods known from the continuum formulation are necessary as well as feasible for the pionful approach.
Cite
@article{arxiv.1505.07000,
title = {Regularization Methods for Nuclear Lattice Effective Field Theory},
author = {Nico Klein and Dean Lee and Weitao Liu and Ulf-G. Meißner},
journal= {arXiv preprint arXiv:1505.07000},
year = {2015}
}
Comments
7 pp, 2 figs, to appear in Physics Letters B