Peierls contour
= Peierls contour
{c}
A Peierls contour is a dual-lattice boundary separating clusters of opposite Ising spins. Flipping the spins inside a contour of size $m$ changes its Boltzmann weight by the factor $e^{-2\beta m}$.
= Peierls contour
{c}
A Peierls contour is a dual-lattice boundary separating clusters of opposite Ising spins. Flipping the spins inside a contour of size $m$ changes its Boltzmann weight by the factor $e^{-2\beta m}$.