3j symbols: to normalize or not to normalize?
van Veenendaal, Michel; van Veenendaal, Michel; Department of Physics, Northern Illinois University, De Kalb, IL 60115, USA; Advanced Photon Source, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, IL 60439, USA
Журнал:
European Journal of Physics
Дата:
2011-07-01
Аннотация:
The systematic use of alternative normalization constants for 3j symbols can lead to a more natural expression of quantities, such as vector products and spherical tensor operators. The redefined coupling constants directly equate tensor products to the inner and outer products without any additional square roots. The approach is extended to tesseral harmonics. The methodology developed here leads to a significantly clearer presentation, which is of interest, not only for textbooks but also for researchers using spherical tensors.
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