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Low-momentum interaction in few-nucleon systems

Andreas Nogga·Scott K. Bogner·Achim Schwenk
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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.

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Andreas Nogga, Scott K. Bogner, Achim Schwenk. 2004-05-06. Low-momentum interaction in few-nucleon systems. https://doi.org/10.1103/physrevc.70.061002

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