One-Dimensional Chain of Anisotropic Spin-Spin Interactions. II. Properties of the Ground-State Energy Per Lattice Site for an Infinite System
Abstract
The ground-state energy 2f per lattice site for an infinite system is studied as a function of Δ and of the magnetization y. Analyticity properties of f(Δ, y) are proved. The behavior of f(Δ, y) at and near y=0 and y=1 are investigated.
- Publication:
-
Physical Review
- Pub Date:
- October 1966
- DOI:
- 10.1103/PhysRev.150.327
- Bibcode:
- 1966PhRv..150..327Y