Consider a 2 dimensional three state Ising model with ferromagnetic coupling J, where si = −1, 0, 1
in a magnetic field h on a triangular lattice. Construct a mean field equation for the magnetization m.
The Attempt at a Solution
I don't know how to start. 2d ising model on a triangular lattice? I need some hamiltionian to start with, I'm not sure what that would look like, and then continue with makeing a mean field theory approximation, getting a partition function and so on