THE RENORMALIZATION GROUP APPROACH TO FRUSTRATED HEISENBERG SPIN SYSTEMS

Satoshi Nishimoto, M. ARIKAWA

José G. Esteve, Amalio F. Pacheco

I. Golhirsch, Evgeny Levich, Victor Yakhot

Antimo Angelucci

We present a study of the ground states and of the low energy fluctuations of the frustrated Heisenberg spin chain, both classical and quantum. Analyzing this simple model we draw some general conclusions about the antiferro-helix “transition” of general classical Heisenberg models. We derive the low energy action describing the fluctuations about the helical phases and we infer the possible existence of nontrivial topological terms in the quantum counterparts.

Naobumi Honda

Niels R. Walet