Nuclear Few-Body Problem with Chiral Perturbation Theory

Lattice Quantum Chromodynamics (LQCD) provides a method to connect QCD with low-energy phenomena, but calculations are limited to small boxes which make it difficult to extrapolate to large distances. In this talk, I shall discuss techniques for solving Schr\"{o}dinger equation in boxes for non-local chiral potentials to facilitate the extraction of physical parameters from lattice QCD. For example, I shall discuss how discrete variable representation basis with periodic and twisted boundary conditions can improve computational efficiency. I shall also discuss the advantages of twist-averaged boundary conditions for solving problems in computational lattice QCD.