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computational physics
Computational physics is the study and implementation of numerical analysis to solve problems in physics for which a quantitative theory already exists.〔 Historically, computational physics was the first application of modern computers in science, and is now a subset of computational science.〔
It is sometimes regarded as a subdiscipline (or offshoot) of theoretical physics, but others consider it an intermediate branch between theoretical and experimental physics, a third way that supplements theory and experiment.
== Overview ==
In physics, different theories based on mathematical models provide very precise predictions on how systems behave. Unfortunately, it is often the case that solving the mathematical model for a particular system in order to produce a useful prediction is not feasible. This can occur, for instance, when the solution does not have a closed-form expression, or is too complicated. In such cases, numerical approximations are required. Computational physics is the subject that deals with these numerical approximations: the approximation of the solution is written as a finite (and typically large) number of simple mathematical operations (algorithm), and a computer is used to perform these operations and compute an approximated solution and respective error.〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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