Extension and exact realization of the Heller's derivative rule [PDF]
Hashim A. Yamani, Abdulaziz D. AlhaidariThe accuracy of the Heller's derivative rule to calculate the numerical weights associated with discretized energy spectrum is enhanced by Broad's extension which adds (N-1) more interpolating points to the original N points. The extension scheme is then used to show how to realize the rule without any approximation.View original: http://arxiv.org/abs/1202.6014
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