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Wavepacket Approach for Spin Transport in Zigzag Spin Chain
Abstract
We study the spin transport property of a spin nematic liquid in a frustrated zigzag spin chain in a magnetic field from the perspective of the time evolution of wavepackets by a time-dependent density-matrix renormalization group method. We use the periodic boundary condition to avoid an edge-induced magnetization structure in the open boundary condition. We find that at the saturation, a magnon-pair wavepacket of momentum k=pi stays localized, since the gapless dispersion due to the antiferro-quadrupole quasi-long-range order has a rather flat structure, indicating zero propagation velocity.
Versions
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BibTeX
@misc{onishi2026wavepacket,
title = {{Wavepacket Approach for Spin Transport in Zigzag Spin Chain}},
author = {Hiroaki Onishi},
howpublished = {arXiv},
year = {2026},
month = aug,
doi = {10.48550/arxiv.2608.04534},
eprint = {2608.04534},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2608.04534},
}
RIS
TY - UNPB
TI - Wavepacket Approach for Spin Transport in Zigzag Spin Chain
AU - Hiroaki Onishi
PY - 2026
DA - 2026/08/05
PB - arXiv
DO - 10.48550/arxiv.2608.04534
UR - https://arxiv.org/abs/2608.04534
AB - We study the spin transport property of a spin nematic liquid in a frustrated zigzag spin chain in a magnetic field from the perspective of the time evolution of wavepackets by a time-dependent density-matrix renormalization group method. We use the periodic boundary condition to avoid an edge-induced magnetization structure in the open boundary condition. We find that at the saturation, a magnon-pair wavepacket of momentum k=pi stays localized, since the gapless dispersion due to the antiferro-quadrupole quasi-long-range order has a rather flat structure, indicating zero propagation velocity.
ER -