In-Medium Similarity Renormalization Group for Nuclei
Abstract
We present a new ab-initio method that uses similarity renormalization group (SRG) techniques to continuously diagonalize nuclear many-body Hamiltonians. In contrast with applications of the SRG to two- and three-nucleon interactions in free space, we perform the SRG evolution "in medium" directly in the -body system of interest. The in-medium approach has the advantage that one can approximately evolve -body operators using only two-body machinery based on normal-ordering techniques. The method is nonperturbative and can be tailored to problems ranging from the diagonalization of closed-shell nuclei to the construction of effective valence shell-model Hamiltonians and operators. We present first results for the ground-state energies of He, O and Ca, which have accuracies comparable to coupled-cluster calculations.
Cite
@article{arxiv.1006.3639,
title = {In-Medium Similarity Renormalization Group for Nuclei},
author = {K. Tsukiyama and S. K. Bogner and A. Schwenk},
journal= {arXiv preprint arXiv:1006.3639},
year = {2011}
}
Comments
4pages, 4 figures, to be published in PRL