Gibbs measures and the Ising model
نویسنده
چکیده
We show this configuration in Figure 1. We calculate that the energy of this configuration is HΛ(σ|σ) = 0. We can calculate the energy of this configuration in a different way, using line segments separating lattice points with different spins, as follows. For an n × n square, there are 2n(n + 1) nearest neighbor interactions. Put a line segment between every two lattice points with different spins; let B(σ|σ′) be the set of these line segments. We show this in Figure 2.
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