Effective field theory of short-range forces

Effective Field Theory of Short – Range

The method of effective field theories (EFTs) is developed for the scattering of two particles at wavelengths which are large compared to the range of their interaction. It is shown that the renormalized EFT is equivalent to the effective range expansion, to a Schrödinger equation with a pseudo-potential, and to an energy expansion of a generic boundary condition at the origin. The roles of reg...

Effective-range theory for an electron in a short-range potential and a laser field

Description of intermediate- and short-range NN nuclear force within a covariant effective field theory

The present paper is aimed to developing an effective field theory in the GeV region to describe consistently both elastic and inelastic NN -scattering in a fully covariant way. In this development we employ our novel s-channel mechanism of NN -interaction at intermediate and short ranges assuming a formation of the sixquark bag dressed with basic meson fields such as π, σ, ρ and ω in the inter...

Three–Nucleon Forces from Chiral Effective Field Theory

We perform the first complete analysis of nd scattering at next–to–next–to–leading order in chiral effective field theory including the corresponding three–nucleon force and extending our previous work, where only the two–nucleon interaction has been taken into account. The three–nucleon force appears first at this order in the chiral expansion and depends on two unknown parameters. These two p...

Few–Nucleon Forces and Systems in Chiral Effective Field Theory

We outline the structure of the nuclear force in the framework of chiral effective field theory of QCD and review recent applications to processes involving few nucleons.