Nuclear force with LapH smearing
T. Sugiura*,
Y. Akahoshi,
T. Aoyama,
T. Doi and
T. Doi*: corresponding author
Pre-published on:
May 16, 2022
Published on:
July 08, 2022
Abstract
The nuclear forces are determined by combining the HAL QCD method and a new type of source smearing technique. The new smearing is a projection to a space spanned by the lowest-lying eigenvectors of the free Laplacian operator on a lattice, which enables efficient calculation of hadron correlators at an affordable cost by utilizing the hadron-level momentum conservations. We find that this new approach reduces the statistical and systematic errors in the resultant nuclear forces.
DOI: https://doi.org/10.22323/1.396.0565
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