Vertex model

The Vertex model is a framework primarily used in statistical mechanics, particularly in the study of two-dimensional lattice systems, such as in the context of the Ising model or general models of phase transitions. It is a way of representing interactions between spins or particles in a lattice. ### Key Features of the Vertex Model: 1. **Lattice Representation**: The vertex model is often depicted on a lattice, where vertices represent the states or configurations of the system.