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[Licence| Download | New Version Template] actg_v1_0.gz(5 Kbytes)
Manuscript Title: 3+1 General relativity by computer.
Authors: M. Salgado
Program title: EVOL, BOLTZ
Catalogue identifier: ACTG_v1_0
Distribution format: gz
Journal reference: Comput. Phys. Commun. 79(1994)309
Programming language: Mathematica.
Computer: VAX Station 3100/38.
Operating system: VMS, Unix (Silicon Graphics).
RAM: 7.5K words
Word size: 32
Keywords: Computer algebra, Astrophysics, Gravitational systems, General relativity, 3+1 formalism, Axisymmetric rotating, Systems, Gravitational collapse, Relativistic transport Theory.
Classification: 1.5, 5.

Nature of problem:
The computer programs developed to produce the Einstein field and matter evolution equations and also the Liouville operator for the relativistic Boltzmann equation find a direct application in the study of general relativistic dynamics of astrophysical objects and their radiation counterpart (for example, in relativistic neutrino transport and gravitational wave emission).

Solution method:
The 3+1 formalism of General Relativity which recasts the Einstein and Matter equations in a suitable form to solve them numerically is employed to write the programs. The relativistic transport theory developed by Lindquist is used to describe neutrino propagation in curved spaces.