Effective and efficient algorithm for the Wigner rotation matrix at high angular momenta

  title={Effective and efficient algorithm for the Wigner rotation matrix at high angular momenta},
  author={Bin Wang and Fan Gao and Long-Jun Wang and Yang Sun},
  journal={Physical Review C},
The Wigner rotation matrix ( d -function), which appears as a part of the angular-momentum-projection operator, plays a crucial role in modern nuclear-structure models. However, it is a long-standing problem that its numerical evaluation suffers from serious errors and instability, which hinders precise calculations for nuclear high-spin states. Recently, Tajima [Phys. Rev. C 91, 014320 (2015)] has made a significant step toward solving the problem by suggesting the high-precision Fourier method… 

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