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Manuscript Title: A high-speed method for eigenvalue problem II: calculation of the
eigenfunction in Milne's method. | ||

Authors: T. Yano, T. Yokota, K. Kawabata, M. Otsuka, S. Matsushima, Y. Ezawa, S. Tomiyoshi | ||

Program title: MEV2 | ||

Catalogue identifier: ABTN_v2_0Distribution format: gz | ||

Journal reference: Comput. Phys. Commun. 72(1992)61 | ||

Programming language: Fortran. | ||

Computer: FACOM M770/6(8.51 MIPS). | ||

Operating system: OS IV/F4 MSP. | ||

RAM: 78K words | ||

Word size: 32 | ||

Keywords: Eigenvalue, Eigenfunction, Milne's method, Spline function, Sturm-liouville-type Equation, General purpose, Differential equations. | ||

Classification: 4.3. | ||

Nature of problem:Calculated eigenvalues include necessarily some numerical errors, which often make the eigenfunctions divergent at large distances. An efficient method to avoid this difficulty is necessitated. | ||

Solution method:Using the WKB approximation in Milne's method for eigenvalue problem of Sturm-Liouville-type linear equations, we can obtain reasonable eigen- functions at large distances. We support a program package MEV2. | ||

Running time:21 seconds on FACOM/F4 MSP (8.51 MIPS computer). |

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