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Defining Time Crystals via Representation Theory

zqyin 添加于 2016-12-30 10:41 | 1106 次阅读 | 0 个评论

作者
Khemani V, Keyserlingk CW von, Sondhi SL
摘要
Time crystals are proposed states of matter which spontaneously break time translation symmetry. There is no settled definition of such states. We offer a new definition which follows the traditional recipe for Wigner symmetries and order parameters. Supplementing our definition with a few plausible assumptions we find that a) systems with time independent Hamiltonians should not exhibit TTSB while b) the recently studied $pi$ spin glass/Floquet time crystal can be viewed as breaking a global internal symmetry and as breaking time translation symmetry as befits its two names.
详细资料
- 关键词: cond-mat.stat-mech; cond-mat.dis-nn; hep-lat; hep-th; quant-ph
- 文献种类: Manual Script
- 期卷页: 2016年
- 日期: 2016-12-28
- 发布方式: arXiv e-prints
- 备注:http://arxiv.org/abs/1612.08758v1
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