Excitations of a single spin embedded in theX Ychain are studied. We find that the magnetization does not approach equilibrium, even if the external magnetic field approaches a non‐zero limit, and that oscillatory excitation resonates with the edge of the one‐particle spectrum b
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机译:研究了嵌入X Y链中的单个自旋的激发。我们发现,即使外部磁场接近非零极限,磁化强度也不会接近平衡,并且振荡激发与单粒子光谱的边缘共振 b
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