Long-Time Behavior of Spin Echo
Long-Time Behavior of Spin Echo
复制标题
自旋回波的长期行为
DOI：
10.1103/physrevlett.94.247601
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发表时间：
2004
影响因子：
8.6
通讯作者：
B. Fine
中科院分区：
文献类型：
--
作者：
B. Fine
自旋回波的长时间行为和相应的均匀自由感应衰减的长时间行为具有相同的时间常数。这一预测延伸到各种回波问题内和超出核磁共振。这个预言的实验证实也将支持大量子系统中时间演化算符本征值的概念。
It is predicted that (i) spin echoes have two kinds of generic long-time decays: either simple exponential, or a superposition of a monotonic and an oscillatory exponential decays; and (ii) the long-time behavior of spin echo and the long-time behavior of the corresponding homogeneous free induction decay are characterized by the same time constants. This prediction extends to various echo problems both within and beyond nuclear magnetic resonance. Experimental confirmation of this prediction would also support the notion of the eigenvalues of time evolution operators in large quantum systems.