Finite-size-scaling ansatz for the helicity modulus of the triangular-lattice three-spin interaction model

Details Finite-size-scaling ansatz for the helicity modulus of the triangular-lattice three-spin interaction model Finite-size-scaling ansatz for the helicity modulus of the triangular-lattice three-spin interaction model

2008-07-21

arxiv.org/abs/0807.3201v1

Phys. Rev. E 77, 062101 (2008)

Physics

Condensed Matter

Statistical Mechanics

5 pages, 4 figures

Scientific paper

10.1103/PhysRevE.77.062101

The Berezinskii-Kosterlitz-Thouless-type continuous phase transition observed in the three-spin interaction model is discussed. The relevant field theory describes the topological defects involved and enables us to perform the renormalization-group analysis. Based on it, we shall propose the finite-size-scaling ansatz for the helicity modulus which exhibits the exponent $\bar\nu=3/5$ for the correlation length in the disordered phase. We perform the Monte Carlo simulations to confirm the ansatz. Also, we argue its relevance to the ground-state phase transition in the quantum spin chain.

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