Fifty ways to build a deuteron: a variational calculation of two-nucleon systems
Abstract
A variational study of two-nucleon systems with lattice quantum chromodynamics is performed using a wide range of interpolating operators: dibaryon operators built from products of momentum-projected nucleons, hexaquark operators built from six spatially localized quarks, and quasi-local operators inspired by two-nucleon bound-state wavefunctions in nuclear effective field theories. Correlation-function matrices involving products of these operators are constructed by computing timeslice-to-all quark propagators with sparsening techniques. Comparisons between results obtained using the same gauge-field ensemble but different interpolating-operator sets demonstrate that interpolating-operator dependence can lead to significant effects on the two-nucleon energy spectra obtained using both variational and non-variational methods.
Keywords
Cite
@article{arxiv.2112.13474,
title = {Fifty ways to build a deuteron: a variational calculation of two-nucleon systems},
author = {Michael L. Wagman},
journal= {arXiv preprint arXiv:2112.13474},
year = {2021}
}
Comments
13 pages, 2 figures, Proceedings for The 38th International Symposium on Lattice Field Theory, LATTICE2021, 26th-30th July, 2021