Computer Physics Communications Program LibraryPrograms in Physics & Physical Chemistry |

[Licence| Download | New Version Template] aeqq_v1_0.tar.gz(2099 Kbytes) | ||
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Manuscript Title: Spectral: Solving Schrödinger and Wheeler-DeWitt equations in the positive semi-axis by the spectral method | ||

Authors: E.V. Corrêa Silva, G.A. Monerat, G. de Oliveira Neto, L.G. Ferreira Filho | ||

Program title: Spectral | ||

Catalogue identifier: AEQQ_v1_0Distribution format: tar.gz | ||

Journal reference: Comput. Phys. Commun. 185(2014)380 | ||

Programming language: Maple, GNU Octave 3.2.4. | ||

Computer: Any supporting Maple. | ||

Operating system: Any supporting Maple. | ||

RAM: About 4 Gbytes | ||

Keywords: Schrödinger equation, Wheeler-DeWitt equation, spectral method. | ||

Classification: 1.9, 4.3, 4.6. | ||

Nature of problem:Numerical solution of Schrödinger-like eigenvalue equations (specially, the Wheeler-DeWitt equation) in the positive semi-axis. | ||

Solution method:The unknown wave function is approximated as a linear combination of a suitable set of functions, and the continuous eigenvalue problem is mapped into a discrete (matricial) eigenvalue problem. | ||

Restrictions:Limitations are due to memory usage only. | ||

Unusual features:The package may not work properly in older versions of Maple, due to a bug in that CAS; for that reason an interface with the GNU Octave system is provided, requiring no user intervention or Octave programming during calculations. | ||

Running time:Seconds to hours, depending on number of basis functions used and on the complexity of the potential used. |

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