Journal or Book Title
Physics Review Letters
We show that one-dimensional topological objects (kinks) are natural degrees of freedom for an antiferromagnetic Ising model on a triangular lattice. Its ground states and the coexistence of spin ordering with an extensive zero-temperature entropy can easily be understood in terms of kinks forming a hard-sphere liquid. Using this picture we explain effects of quantum spin dynamics on that frustrated model, which we also study numerically.
Mostovoy, M; Khomskii, D; Knoester, J; and Prokof'ev, Nikolai, "Frustrated Spin Model as a Hard-Sphere Liquid" (2003). Physics Department Faculty Publication Series. 1182.