Coupled-cluster theory for three-body Hamiltonians
Nuclear Theory
2008-11-26 v2
Abstract
We derive coupled-cluster equations for three-body Hamiltonians. The equations for the one- and two-body cluster amplitudes are presented in a factorized form that leads to an efficient numerical implementation. We employ low-momentum two- and three-nucleon interactions and calculate the binding energy of He-4. The results show that the main contribution of the three-nucleon interaction stems from its density-dependent zero-, one-, and two-body terms that result from the normal ordering of the Hamiltonian in coupled-cluster theory. The residual three-body terms that remain after normal ordering can be neglected.
Cite
@article{arxiv.0704.2854,
title = {Coupled-cluster theory for three-body Hamiltonians},
author = {G. Hagen and T. Papenbrock and D. J. Dean and A. Schwenk and A. Nogga and M. Wloch and P. Piecuch},
journal= {arXiv preprint arXiv:0704.2854},
year = {2008}
}