Zeeman ladders in frustrated XYZ spin chains
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论文将非弹性中子散射、动力学结构因子和时间依赖矩阵乘积态计算结合起来，直接分析自旋子束缚态在不同偏振通道中的谱学特征。
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arXiv:2508.17834v2 Announce Type: replace Abstract: We investigate the nature of the excitations captured by the dynamical response of XYZ triangular spin-1/2 ladders. We complement experimental inelastic neutron scattering results on the compound $\text{Cs}_\text{2}\text{CoBr}_\text{4}$ with numerically exact simulations based on time-dependent matrix product state methods. Our results show that bound states of spinon excitations can arise in XYZ beyond the requirement of strong Ising anisotropies. We analyze the role of the frustrated triangular couplings on the excitations giving rise to the spin dynamical structure factor and show how the features of the bound states manifest themselves in the different polarization channels.