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arXiv · 1011.4085

Evolving Nuclear Many-Body Forces with the Similarity Renormalization Group

E. D. Jurgenson·P. Navratil·R. J. Furnstahl
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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.

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E. D. Jurgenson, P. Navratil, R. J. Furnstahl. 2010-11-17. Evolving Nuclear Many-Body Forces with the Similarity Renormalization Group. https://doi.org/10.1103/physrevc.83.034301

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