Ising model

Exact results for the nearest-neighbor Ising (lattice-gas) model: Ising’s one-dimensional chain, Kramers-Wannier duality, and Onsager’s two-dimensional solution.

Ising’s one-dimensional chain: no phase transition

Ising's one-dimensional chain: no phase transition

Kramers-Wannier duality and the exact Ising critical temperature

Kramers-Wannier duality and the exact Ising critical temperature

Onsager’s exact solution of the two-dimensional Ising model

Onsager's exact solution of the two-dimensional Ising model