REPRESENTATION THEORY AND WIGNER-RACAH ALGEBRA OF THE SU(2) GROUP IN A NONCANONICAL BASIS

摘要

It is a real pleasure to dedicate this paper to Professor Josef Paldus on the occasion of his 70th anniversary in recognition of his important contribution to various domains of the quantum theory of molecular electronic structure.The quantum chemistry community greatly benefits from his works on nonrelativistic and relativistic electronic systems via second quantization and field-theoretical approaches,diagrammatic methods,Lie-like and Clifford-like algebraic techniques.His numerous results on the many-electron correlation problem,on the configuration interaction method,on the coupled-cluster theory,and on density matrix calculations should be a source of inspiration for young theoretical chemists.The present author is very indebted to Prof.Paldus for interesting discussions and the kind hospitality extended to him on the occasion of several fruitful visits at the Mathematics Department of the University of Waterloo.Merci beaucoup Jo.