Rapidly convergent expansions for the strength function of an excitation in a many-particle model space are given in terms of orthogonal polynomials defined by the state or partial state densities of the system. Convergence is assured in a wide range of circumstances by the operation of a central limit theorem. Level-to-level fluctuations are in many cases small, their automatic elimination in the statistical smoothing generated by truncating the series then leading to only small errors. © 1975.
Publication Source (Journal or Book title)
Physics Letters B
Draayer, J., French, J., Potbhare, V., & Wong, S. (1975). Polynomial expansions for excitation strengths. Physics Letters B, 55 (3), 263-266. https://doi.org/10.1016/0370-2693(75)90595-X