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Manuscript Title: Fortran code for the three-dimensional Ising model. | ||

Authors: M. Creutz, K.J.M. Moriarty | ||

Program title: MICROIS | ||

Catalogue identifier: AADW_v1_0Distribution format: gz | ||

Journal reference: Comput. Phys. Commun. 39(1986)173 | ||

Programming language: Fortran. | ||

Computer: CDC CYBER 170-730. | ||

Operating system: CDC NOS 2.2. | ||

RAM: 25K words | ||

Word size: 60 | ||

Keywords: Solid state physics, Other, Ising model, Phase transitions, Critical exponents, Correlation functions, Magnetization, Microcanonical methods, Statistical physics, Thermodynamics. | ||

Classification: 7.7, 23. | ||

Nature of problem:The program calculates equilibrium distributions for the elementary magnets in a large three-dimensional Ising model system so that the critical inverse temperature and critical exponents can be measured. | ||

Solution method:An essentially deterministic technique called the microcanonical method with demons is used to obtain equilibriated elementary magnetic configurations. Spin correlations at a variety of separations can be measured. | ||

Restrictions:In order to reduce the errors on our measurements, reasonably long run times are required which is the only restriction on the use of the program. Primary memory is not a restriction as very little memory is required. | ||

Running time:The test run on an 8**2 * 120 lattice with 10 iterations through the lattice, each with 10 sweeps, took 3.2 secs. on the CDC CYBER 170-730. |

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