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 - Funding Information:
I gratefully thank my collaborators on the research presented here: Saman Amarasinghe, Riyadh Baghdadi, Zohreh Davoudi, William Detmold, Marc Illa, Assumpta Parreño, Andrew Pochinsky, and Phiala Shanahan. I further thank Silas Beane, Kostas Orginos, and Martin Savage for extensive discussions and Martin Savage for collaboration in the early stages of this work. This research used resources of the Oak Ridge Leadership Computing Facility at the Oak Ridge National Laboratory, which is supported by the Office of Science of the U.S. Department of Energy under Contract number DE-AC05-00OR22725, and the University of Washington Hyak computational infrastructure. Computations used the Qlua [51] and Tiramisu [41] software libraries. This manuscript has been authored by Fermi Research Alliance, LLC under Contract No. DE-AC02-07CH11359 with the U.S. Department of Energy, Office of Science, Office of High Energy Physics.
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 -