Tricritical point of J1-J2 Ising model on hyperbolic lattice

Abstract

A ferromagnetic-paramagnetic phase transition of the two-dimensional frustrated Ising model on a hyperbolic lattice is investigated by use of the corner transfer matrix renormalization group method. The model contains ferromagnetic nearest-neighbor interaction J_1 and the competing antiferromagnetic interaction J_2. A mean-field like second-order phase transition is observed when the ratio κ= J_2 / J_1 is less than 0.203. In the region 0.203 < κ< 1/4, the spontaneous magnetization is discontinuous at the transition temperature. Such tricritical behavior suggests that the phase transitions on hyperbolic lattices need not always be mean-field like.

7 pages, 13 figures, submitted to Phys. Rev. E

References in corpus (4)

• Periodic boundary conditions on the pseudosphere
• Ising model on hyperbolic lattice studied by corner transfer matrix renormalization group method
• Novel scaling behavior of the Ising model on curved surfaces
• Phase transition of clock models on hyperbolic lattice studied by corner transfer matrix renormalization group method

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• Anisotropic deformation of the 6-state clock model: Tricritical-point classification
• Efficient iPEPS Simulation on the Honeycomb Lattice via QR-based CTMRG
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