Evolving Nuclear Many-Body Forces with the Similarity Renormalization Group
Abstract
In recent years, the Similarity Renormalization Group has provided a powerful and versatile means to soften interactions for ab initio nuclear calculations. The substantial contribution of both induced and initial three-body forces to the nuclear interaction has required the consistent evolution of free-space Hamiltonians in the three-particle space. We present the most recent progress on this work, extending the calculational capability to the p-shell nuclei and showing that the hierarchy of induced many-body forces is consistent with previous estimates. Calculations over a range of the flow parameter for 6Li, including fully evolved NN+3N interactions, show moderate contributions due to induced four-body forces and display the same improved convergence properties as in lighter nuclei. A systematic analysis provides further evidence that the hierarchy of many-body forces is preserved.
Cite
@article{arxiv.1011.4085,
title = {Evolving Nuclear Many-Body Forces with the Similarity Renormalization Group},
author = {E. D. Jurgenson and P. Navratil and R. J. Furnstahl},
journal= {arXiv preprint arXiv:1011.4085},
year = {2011}
}
Comments
26 pages, 15 figures, and 5 tables