bloch.pdf

相关ppt： cusps.pdf

我迄今最喜欢的工作，可是再次被pra拒稿。理由居然有参考文献太少，还有文章只是解了一个玩具模型。发现并求解这个玩具模型，不正是本人最自豪的事情吗？而且这个模型是对单点缺陷的一维紧束缚模型非常自然的抽象啊。  

还说只是具有教学价值。教学价值难道不是最高的价值吗？我之前呼呼发的pra讨论的都是什么狗屁问题，可是当你真正讨论你认为有价值的问题时，pra不高兴了。感觉pra不喜欢这种朴素的问题，编辑不相信一个无名之辈能够在一个简单得不能再简单的模型里玩出什么新东西。他们更希望你跟风做时髦话题，那样他们觉得你在推进物理学发展。也不知道是不是因为在推荐审稿人那里，我们写的是任何懂量子力学的人都可以看懂我们的文章，让编辑觉得这是民科的稿子。

感觉审稿人非常不负责任。他随口就说文章里的现象利用通常的先解析对角化哈密顿量然后在能量表象下作时间演化的办法就可以解释。真不觉得这个路子可行。随便想想就知道这个路子会遇到什么困难。这个路子出适合做数值计算，但不适合做解析。

审稿人也说我们没讨论实验实现。恩，其实是有意为之。这样是为了理论的纯粹性。不过，在他的批评促使博主看下某任意格点上波函数的模方的时间演化。诡异地成台阶状，目前无法理解。不知道这是否暗示着这个问题也可以在实空间求解。有兴趣的可以研究下。

审稿意见如下，这次审稿人貌似是编辑部自己的人，署名了。作为一个一般的经验，审稿人一般不会对文章结果的可靠性有怀疑，问题往往在主观性方面。

The submission reports some observations on non-smooth dynamics in a perturbed one-dimensional tight-binding model. The feature having been observed is cusps in oscillatory dynamics of the survival probability after a sudden change of a single site potential. To explain the emergence of cusps in the quenched dynamics the author proposed a truncated linearized model which has been solved by Duhamel's method. The results are sound and reproduce the numerical data to a good accuracy. It appears, however, that the author overemphasizes the power of their approach in contrast to what they refer to as "static properties of a system".

Clearly, the results of the above dynamical approach could be reproduced by simply expanding the initial state over the exact eigenstates of the perturbed Hamiltonian which in the given case are accessible analytically. On the other hand, the author did not manage to link their results to the state of the art in modern physics leaving the reader without any reference frame with respect to possible experimental implementations. The bibliography is scarce and the introductory section is poorly written. To my view both the results presented and the presentation style leave the impression of a toy model solved for tutorial purposes.

As a conclusion, the paper is not suitable for publication in PRA.

Dr. **********

Editorial Board Member

Physical Review A

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