at Sharif University of Technology

Homeworks are excercises from the main reference,
i.e. Magnetism in condensed matter, by: Stephen Blundell

HW#1: 1.4, 1.5, 1.9, 1.12, 1.13   Date due: 22 Mehr 1397

HW#2: 2.4, 2.7, 2.8   Date due: 6 Aban 1397

HW#3: 3.3, 3.5, 3.8 Date due: 27 Aban 1397

HW#4: 4.1, 4.3, 4.5, 4.7 Date due: 11 Azar 1397

HW#5: 5.2, 5.3, 5.5, 5.6 Date due: 25 Azar 1397

HW#6: Date due: Any time before final exam
Consider an anti-ferromagnetic Heisenberg Hamiltonian on a hyper-cubic lattice.
Within linear spin-wave theory, find (i) the ground-state energy, (ii) low-lying excitations
of the model, (iii) the validity regime of linear spin-wave approach.
Examine your results on D=1, 2, 3 dimensional spaces.