Physical Review D
We consider the problem of calculating the large number of Wick contractions necessary to compute states with the quantum numbers of many baryons in lattice QCD. We consider a constructive approach and a determinant-based approach and show that these methods allow the required contractions to be performed in a computationally manageable amount of time for certain choices of interpolating operators. Examples of correlation functions computed using these techniques are shown for the quantum numbers of the light nuclei, He-4, Be-8, C-12, O-16, and Si-28.
Detmold, W., & Orginos, K. (2013). Nuclear correlation functions in lattice QCD. Physical Review D, 87(11), 114512.