A novel quark-field creation operator construction for hadronic physics in lattice QCD

Understand

A new quark-field smearing algorithm is defined which enables efficient calculations of a broad range of hadron correlation functions.

• The technique applies a low-rank operator to define smooth fields that are to be used in hadron creation operators.
• The resulting space of smooth fields is small enough that all elements of the reduced quark propagator can be computed exactly at reasonable computational cost.
• Correlations between arbitrary sources, including multi hadron operators can be computed a posteriori without requiring new lattice Dirac operator inversions.