论文标题

量子临界动力学和一维抗铁磁铁的缩放

Quantum critical dynamics and scaling in one-dimensional antiferromagnets

论文作者

Zheludev, Andrey

论文摘要

对于一个维度量子场中的许多量子临界点,量子场理论为空间和时间相关函数的缩放提供了精确的结果。这些模型的实验实现可以在某些准一维抗铁磁铁材料中找到。在实验上测量预测的缩放定律会带来巨大的技术挑战。在许多情况下,由于在非弹性中子散射技术的发展以及发现新模型化合物的发展方面的定性进步,这仅是最近才成为可能的。在这里,我们回顾了一些此类实验研究。

For a number of quantum critical points in one dimension quantum field theory has provided exact results for the scaling of spatial and temporal correlation functions. Experimental realizations of these models can be found in certain quasi one dimensional antiferromagnetc materials. Measuring the predicted scaling laws experimentally presents formidable technical challenges. In many cases it only became possible recently, thanks to qualitative progress in the development of inelastic neutron scattering techniques and to the discovery of new model compounds. Here we review some of the recent experimental studies of this type.

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