Symmetries of the Similarity Renormalization Group for Nuclear Forces
arXiv:1108.1162 · doi:10.1103/PhysRevC.86.034002
Abstract
We analyze the role played by Long Distance Symmetries within the context of the Similarity Renormalization Group (SRG) approach, which is based on phase-shift preserving continuous unitary transformations that evolve hamiltonians with a cutoff on energy differences. We find that there is a SRG cutoff for which almost perfect fulfillment of Wigner symmetry is found. We discuss the possible consequences of such finding.
16 pages, 6 figures, to appear in Physical Review C