Operator evolution from the similarity renormalization group and the Magnus expansion
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DOI: 10.1103/physrevc.102.034005
Abstract: The Magnus expansion is an efficient alternative to solving similarity renormalization group (SRG) flow equations with high-order, memory-intensive ordinary differential equation solvers. The numerical simplifications it offers for operator evolution are particularly valuable for in-medium… read more here.
Keywords: operator evolution; similarity renormalization; renormalization group; magnus expansion ... See more keywords