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Manuscript Title: Generation and analysis of high order strong coupling series for SU(2) lattice gauge theory.
Authors: C. Ayala, M. Baig
Program title: STRONG_SU2
Catalogue identifier: ABLQ_v1_0
Distribution format: gz
Journal reference: Comput. Phys. Commun. 58(1990)199
Programming language: Fortran.
Computer: VAX 8800.
Operating system: VAX/VMS.
Word size: 32
Keywords: Particle physics, Elementary, Qcd, Lattice gauge theories, Strong coupling Expansions, Mixed actions, Phase transitions, D-dimensional theories.
Classification: 11.5.

Nature of problem:
We present a package of FORTRAN routines and programs able to study strong coupling series expansions in pure SU(2) lattice gauge theory mixed actions. The most general mixed action that can be analyzed is a mixing of the spin 1/2, 1, 3/2 and 2 representations.

Solution method:
The set of routines generating the series is a symbiosis between the use of outputs coming from the algebraic manipulator REDUCE and the use of the FORTRAN language. The second program performs the Pade approximants analysis of the series using some NAg routines. Remaining programs perform the series analysis and graphical representation of the results for several cases. They use GKS-3D standard graphical routines and, optionally, a TOPDRAWER output is done.

Restrictions:
Series are generated along "radial" lines in the four-parametric phase space of couplings. However, those "radial" lines are the most natural way to study such expansions. Typical running time: The test run output that performs the study of a single radial line in the four couplings phase space takes around 1 CPU minutes on a VAX 8800. The previous order in the development of the action (including only spin 1/2,1,3/2) has a special treatment, it can be obtained in 10 CPU seconds on a VAX 8800.