Chiral fixed point in a junction of critical spin-1 chains
Hernan B. Xavier,
Rodrigo G. Pereira
Abstract:Junctions of one-dimensional systems are of great interest to the development of synthetic materials that harbor topological phases. We study a junction of three gapless spin-1 chains described by the SU(2) 2 Wess-Zumino-Wittten model and coupled by exchange and chiral three-spin interactions. We show that a chiral fixed point appears as a special point on the transition line separating two regimes described by open boundary conditions, corresponding to decoupled chains and the formation of a boundary spin sin… Show more
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