Application of Uniform Matrix Product State to Quantum Phase Transition with a Periodicity Change

Abstract

As a method beyond the mean-field analysis, a matrix product state (MPS) with incommensurate periodicity is applied to detect phase transitions accompanied with periodicity change, where the incommensurate MPS is generated by acting local-spin-rotation operators with the incommensurate periodicity on a uniform MPS. As a commensurate/commensurate change, we calculate the partial ferro -- perfect ferro phase transition in the $S=1/2$ Heisenberg model and its critical exponent of the magnetization curve. As a commensurate/incommensurate change, we calculate the S=1 Heisenberg model with bilinear and biquadratic interactions which has periodicity change in the spin-spin correlation function.

4 pages, 3 figures, Supplement (Proc. TOKIMEKI2011) Program No.25-P-36

References in corpus (4)

• Classical simulation of infinite-size quantum lattice systems in one spatial dimension
• Spin nematic correlations in bilinear-biquadratic S=1 spin chains
• Symmetry breaking and criticality in tensor-product states
• Uniform Matrix Product State in the Thermodynamic Limit

Cited by in corpus (1)

• Incommensurate Matrix Product State for Quantum Spin Systems