Low-momentum interaction in few-nucleon systems

Abstract

The effective low-momentum interaction Vlowk is applied to three- and four-nucleon systems. We investigate the 3H, 3He and 4He binding energies for a wide range of the momentum cutoffs. By construction, all low-energy two-body observables are cutoff-independent, and therefore, any cutoff dependence is due to missing three-body or higher-body forces. We argue that for reasonable cutoffs Vlowk is similar to high-order interactions derived from chiral effective field theory. This motivates augmenting Vlowk by corresponding three-nucleon forces. The set of low-momentum twoand three-nucleon forces can be used in calculations of nuclear structure and reactions.

4 pages, 4 figures

References in corpus (1)

• Low-momentum nucleon-nucleon interaction and its application to the few-nucleon systems

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