Difficulties around the idea of spontaneous breaking of time translation symmetry in a closed quantum mechanical system are identified, and then overcome in a simple model. The possibility of ordering in imaginary time is also discussed.
详细资料
关键词: quant-ph; cond-mat.other; cond-mat.supr-con
文献种类: Manual Script
期卷页: 2012年
日期: 2012-7-11
发布方式: arXiv e-prints
备注:arXiv:1202.2539v2; 6 pages, no figures. v2: tightened format, additional references, small improvements