TY - JOUR
T1 - Fifty ways to build a deuteron
T2 - 38th International Symposium on Lattice Field Theory, LATTICE 2021
AU - the NPLQCD Collaboration
AU - Wagman, Michael L.
AU - Amarasinghe, Saman
AU - Baghdadi, Riyadh
AU - Davoudi, Zohreh
AU - Detmold, William
AU - Illa, Marc
AU - Parreño, Assumpta
AU - Pochinsky, Andrew
AU - Shanahan, Phiala
N1 - Publisher Copyright:
© Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND 4.0)
PY - 2022/7/8
Y1 - 2022/7/8
N2 - 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.
AB - 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.
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M3 - Conference article
AN - SCOPUS:85134431385
SN - 1824-8039
VL - 396
JO - Proceedings of Science
JF - Proceedings of Science
M1 - 419
Y2 - 26 July 2021 through 30 July 2021
ER -