Regularization Methods for Nuclear Lattice Effective Field Theory
arXiv:1505.07000 · doi:10.1016/j.physletb.2015.06.040
Abstract
We investigate Nuclear Lattice Effective Field Theory for the two-body system for several lattice spacings at lowest order in the pionless as well as in the pionful theory. We discuss issues of regularizations and predictions for the effective range expansion. In the pionless case, a simple Gaussian smearing allows to demonstrate lattice spacing independence over a wide range of lattice spacings. We show that regularization methods known from the continuum formulation are necessary as well as feasible for the pionful approach.
7 pp, 2 figs, to appear in Physics Letters B
References in corpus (7)
- Improved chiral nucleon-nucleon potential up to next-to-next-to-next-to-leading order
- Lattice Simulations for Light Nuclei: Chiral Effective Field Theory at Leading Order
- Lattice chiral effective field theory with three-body interactions at next-to-next-to-leading order
- Two-particle scattering on the lattice: Phase shifts, spin-orbit coupling, and mixing angles
- Breaking and restoration of rotational symmetry on the lattice for bound state multiplets
- A new tool in nuclear physics: Nuclear lattice simulations
- Temperature-dependent errors in nuclear lattice simulations