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arXiv · 1310.3385

Edge Modes in the Intermediate-D and Large-D Phases of the S=2 Quantum Spin Chain with XXZ and On-Site Anisotropies

Kiyomi Okamoto·Takashi Tonegawa·Toru Sakai·Makoto Kaburagi
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Abstract

We investigate the edge modes at T=0 in the intermediate-D (ID) phase and the large-D (LD) phase of the S=2 quantum spin chain with the XXZ anisotropy and the generalized on-site anisotropies by use of the DMRG. There exists a gapless edge mode in the ID phase, while no gapless edge mode in the LD phase. These results are consistent with the physical pictures of these phases. We also show the ground-state phase diagrams obtained by use of the exact diagonalization and the level spectroscopy analysis.

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Kiyomi Okamoto, Takashi Tonegawa, Toru Sakai, Makoto Kaburagi. 2013-10-12. Edge Modes in the Intermediate-D and Large-D Phases of the S=2 Quantum Spin Chain with XXZ and On-Site Anisotropies. https://doi.org/10.7566/jpscp.3.014022

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