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The quantum-mechanical theory of physical systems whose dynamical variables are local functions of space and time. As distinguished from the quantum...
A model which consists of a lattice of “spin” variables with two characteristic properties: (1) each of the spin variables independently takes on...


= Encyclopedia Article; = Research Update
Figure 1.Specific heat of Onsager's lattice for E2/E1= 1.
From Encyclopedia article 'Ising model'
Figure 2.Spontaneous magnetization M(0) of Onsager's lattice for E2/E1= 1.
From Encyclopedia article 'Ising model'
Figure 3.Comparison of the impure Ising model specific heat with the observed specific heat of EuS for T >Tc.
From Encyclopedia article 'Ising model'
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