Spectral swMATH ID: 16768 Software Authors: Corrêa Silva, E.V.; Monerat, G.A.; de Oliveira Neto, G.; Ferreira Filho, L.G. Description: Spectral: solving schroedinger and Wheeler-dewitt equations in the positive semi-axis by the spectral method. The Galerkin spectral method can be used for approximate calculation of eigenvalues and eigenfunctions of unidimensional Schroedinger-like equations such as the Wheeler-DeWitt equation. The criteria most commonly employed for checking the accuracy of results is the conservation of norm of the wave function, but some other criteria might be used, such as the orthogonality of eigenfunctions and the variation of the spectrum with varying computational parameters, e.g. the number of basis functions used in the approximation. The package Spectra, which implements the spectral method in Maple language together with a number of testing tools, is presented. Alternatively, Maple may interact with the Octave numerical system without the need of Octave programming by the user. Homepage: http://cpc.cs.qub.ac.uk/summaries/AEQQ_v1_0.html Keywords: Schroedinger-like equation; Wheeler-deWitt equation; Galerkin spectral method Related Software: nuSpectral; FFTW; R; Spectra; Octave; Maple Cited in: 5 Publications all top 5 Cited by 11 Authors 2 Abdelkawy, Mohamed A. 2 Amin, Ahmed Z. M. 2 Corrêa Silva, E. V. 2 Doha, Eid H. 2 Lopes, António M. 2 Monerat, G. A. 1 de Oliveira-Neto, Gil 1 Ferreira Filho, L. G. 1 Oliveira-Neto, G. 1 Ratajczak, Matthias 1 Seilmayer, Martin Cited in 4 Serials 2 Computational and Applied Mathematics 1 Computer Physics Communications 1 International Journal of Modern Physics D 1 Journal of Applied Mathematics all top 5 Cited in 8 Fields 3 Partial differential equations (35-XX) 3 Numerical analysis (65-XX) 2 Real functions (26-XX) 1 Special functions (33-XX) 1 Integral equations (45-XX) 1 Quantum theory (81-XX) 1 Relativity and gravitational theory (83-XX) 1 Information and communication theory, circuits (94-XX) Citations by Year