Table of contents: Classical spin systems, order and disorder, introducing the Ising model and solving the 1d case, the transfer matrix, the Peierls argument; The quantum/classical correspondence, the Ising Hamiltonian;
Quantum spin systems, su(2) symmetry;
The 1 1 dimensional Ising model: the low- and high-temperature expansions, duality, solving it using free fermions; The XXZ chain and the six-vertex model; Landau theory and the mean-field approximation; A Conformal Field Theory Primer. |