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[Licence| Download | New Version Template] ache_v1_0.gz(19 Kbytes)
Manuscript Title: Calculating bound and resonant states in local and nonlocal Coulomb- like potentials.
Authors: Z. Papp
Catalogue identifier: ACHE_v1_0
Distribution format: gz
Journal reference: Comput. Phys. Commun. 70(1992)426
Programming language: Fortran.
Computer: CONVEX C220.
Operating system: UNIX.
RAM: 250K words
Word size: 32
Peripherals: disc.
Keywords: Nuclear physics, Theoretical methods, Bound state, Resonant state, Gamow state, Homogeneous lippmann Schwinger equation, Coulomb problem, Coulomb-like potential, Local potential, Nonlocal potential, Separable expansion, Coulomb-sturmian Function, Fredholm determinant, Hypergeometric function, Continued fraction, Chebyshev polynomials.
Classification: 17.16.

Nature of problem:
The program calculates bound and resonant state energies and wave functions in local and non-local Coulomb-like potentials.

Solution method:
The homogeneous Lippmann-Schwinger equation for Coulomb-like potentials is solved using the potential separable expansion method based on the Coulomb-Sturmian functions.

The built-in potential is the spherical fish bone potential. This, however, can simulate practically all the spherical potentials used in atomic and nuclear physics.

Unusual features:
REAL*8 and COMPLEX*16 declarations are used.

Running time:
The running time depends mostly on the size of the basis. The test run used about 0.01 seconds cpu time on the Convex C220.