No-core Monte Carlo shell model calculations with unitary correlation operator method and similarity renormalization group

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LIU Lang. No-core Monte Carlo shell model calculations with unitary correlation operator method and similarity renormalization group[J]. Chinese Physics C, 2015, 39(5): 054103. doi: 10.1088/1674-1137/39/5/054103
LIU Lang. No-core Monte Carlo shell model calculations with unitary correlation operator method and similarity renormalization group[J]. Chinese Physics C, 2015, 39(5): 054103.  doi: 10.1088/1674-1137/39/5/054103 shu
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Received: 2014-09-28
Revised: 1900-01-01
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No-core Monte Carlo shell model calculations with unitary correlation operator method and similarity renormalization group

    Corresponding author: LIU Lang,
  • School of Science, Jiangnan University, Wuxi 214122, China

Abstract: The unitary correlation operator method (UCOM) and the similarity renormalization group theory (SRG) are compared and discussed in the framework of the no-core Monte Carlo shell model (MCSM) calculations for 3H and 4He. The treatment of spurious center-of-mass motion by Lawson's prescription is performed in the MCSM calculations. These results with both transformed interactions show good suppression of spurious center-of-mass motion with proper Lawson's prescription parameter βc.m. values. The UCOM potentials obtain faster convergence of total energy for the ground state than that of SRG potentials in the MCSM calculations, which differs from the cases in the no-core shell model calculations (NCSM). These differences are discussed and analyzed in terms of the truncation scheme in the MCSM and NCSM, as well as the properties of the potentials of SRG and UCOM.

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