The similarity renormalization group for three-body interactions in one dimension |
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Authors: | O Åkerlund E J Lindgren J Bergsten B Grevholm P Lerner R Linscott C Forssén L Platter |
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Institution: | 1.Department of Fundamental Physics,Chalmers University of Technology,Gothenburg,Sweden |
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Abstract: | We report on recent progress of the implementation of the similarity renormalization group (SRG) for three-body interactions
in a one-dimensional, bosonic model system using the plane-wave basis. We discuss our implementation of the flow equations
and show results that confirm that results in the three-body sector remain unchanged by the transformation of the Hamiltonian.
We also show how the SRG transformation decouples low- from high-momentum nodes in the three-body sector and therefore simplifies
the numerical calculation of observables. |
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