| Lattice Model (physics) |
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In Physics , a lattice model is a physical model that is not defined on a Continuum , but on a Lattice , which is a Graph or an ''n''-complex approximating Spacetime or Space . The lattice is ''translationally invariant'' if it has Translational Symmetry and the Primitive Cell contains a finite number of nodes. In Condensed Matter Physics , the Atom s of a Crystal automatically form a lattice and this is one application of lattice theory. See Ising Model , XY Model . Another is as an approximation to a Continuum theory, either to give an Ultraviolet Cutoff to the theory to prevent divergences or to perform Numerical Computations . See QCD Lattice Model s. Numerical Computations for Partial Differential Equation s are lattice models because computers only work with discrete data. See Scaling Limit . EXTERNAL LINKS |
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