Quark action for very coarse lattices
Quark action for very coarse lattices
We investigate a tree-level $\mathcal{O}{(a}^{3})$-accurate action, D234c, on coarse lattices. For the improvement terms we use tadpole-improved coefficients, with the tadpole contribution measured by the mean link in the Landau gauge. We measure the hadron spectrum for quark masses near that of the strange quark. We find that D234c shows …