When studying the approximation of the wave functions of the \(H\)-atom by sums of Gaussians, Klopper and Kutzelnigg [KK] and Kutzelnigg [Ku] found an asymptotic of \(\exp [-\gamma \sqrt{n}]\). The results were obtained from numerical results and justified by some asymptotic expansions in quadrature
The asymptotics of a new exponential sum
β Scribed by R.B. Paris
- Publisher
- Elsevier Science
- Year
- 2009
- Tongue
- English
- Weight
- 855 KB
- Volume
- 223
- Category
- Article
- ISSN
- 0377-0427
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β¦ Synopsis
The absolutely convergent exponential sum
is studied for m β +β and fixed p when the parameter ΞΈ is allowed to become large such that ΞΈ/m remains finite. This situation corresponds, in general, to the trace in the complex plane of the partial sums of S p (ΞΈ; m) consisting of a multiple spiral structure. Numerical results are presented to illustrate the accuracy of the expansion.
π SIMILAR VOLUMES
Evaluation of some exponential sums over i l finite field By L. CAF~LITZ of Durham (U.S.A.) (Eingegangen am 10.7.1978) 1. Introduction. Let Fq = QF(q) denote the finite field of order q = p", p prime, n 2 1. For a E Fq put t(a) = a + up + + up"-' and e(a) = p i W / p , so that t(aP) = t(a), e(aP) =