Programs in Physics & Physical Chemistry
|[Licence| Download | New Version Template] aeqq_v1_0.tar.gz(2099 Kbytes)|
|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_0|
Distribution 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.
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.
Limitations are due to memory usage only.
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.
Seconds to hours, depending on number of basis functions used and on the complexity of the potential used.
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