出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：In the low-energy region far below the chiral symmetry breaking scale of Lc ∼ 1 GeV chiral
perturbation theory (ChPT) provides a model-independent approach for quantitative description
of nuclear processes. In the two- and more-nucleon sector perturbation theory is applicable only at
the level of an effective potential which serves as input in the corresponding dynamical equation.
To deal with the resulting many-body problem we put chiral effective field theory (EFT) on the
lattice. Here we present the results of our lattice EFT study up to next-to-next-to-leading order
(N2LO) in the chiral expansion. Accurate description of two-nucleon phase-shifts and ground
state energy ratio of dilute neutronmatter up to corrections of higher orders shows that lattice EFT
is a promising tool for a quantitative description of low-energy few- and many-body systems.
