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[Licence| Download | New Version Template] adjl_v1_0.tar.gz(5 Kbytes)
Manuscript Title: Symbolic calculations of unitary transformations in quantum dynamics.
Authors: N.-A. Nguyen, T.T. Nguyen-Dang
Program title: NCComAlgebra
Catalogue identifier: ADJL_v1_0
Distribution format: tar.gz
Journal reference: Comput. Phys. Commun. 115(1998)183
Programming language: Mathematica.
Operating system: Windows NT 4.0, Windows 95.
Keywords: Computer algebra, Molecular physics, Scattering, Photon, Commutator algebra, Unitary transformation.
Classification: 5, 16.6.

Nature of problem:
Computer algebra implementation of the definition of a commutator, of commutator handling rules. Symbolic evaluation of unitary transformations for use in quantum dynamical problems.

Unitary transformations are represented by a truncated, finite series of nested commutators involving the generator. The maximum number of terms presently allowed in this series is 32. This can be extended by the user.

Unusual features:
Uses an extension of Mathematica language offered by the package NCAlgebra. This must therefore be installed as a Mathematica add-on package.