The general harmonic-oscillator brackets: compact expression, symmetries, sums and Fortran code
G. P. Kamuntavicius, R. K. Kalinauskas, B. R. Barrett, S. Mickevicius, D. Germanas
Abstract
We present a very simple expression and a Fortran code for the fast and precise calculation of three-dimensional harmonic-oscillator transformation brackets. The complete system of symmetries for the brackets along with analytical expressions for sums, containing products of two and three brackets, is given.
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