Boundary Time Crystals

被引：198
|
作者：
Iemini, F. [1 ]
Russomanno, A. [1 ,2 ,3 ]
Keeling, J. [4 ]
Schiro, M. [5 ]
Dalmonte, M. [1 ]
Fazio, R. [1 ,2 ,3 ]
机构：
[1] Abdus Salaam Int Ctr Theoret Phys, Str Costiera 11, I-34151 Trieste, Italy
[2] CNR, NEST, Scuola Normale Super, I-56126 Pisa, Italy
[3] CNR, Ist Nanosci, I-56126 Pisa, Italy
[4] Univ St Andrews, SUPA, Sch Phys & Astron, St Andrews KY16 9SS, Fife, Scotland
[5] Univ Paris Saclay, Inst Phys Theor, CNRS, CEA, F-91191 Gif Sur Yvette, France
来源：
PHYSICAL REVIEW LETTERS | 2018年 / 121卷 / 03期
基金：
新加坡国家研究基金会; 英国工程与自然科学研究理事会;
关键词：
COOPERATIVE FLUORESCENCE; SYSTEM; ORDER; SYMMETRY; OPERATOR; STATES; FIELD;
D O I：
10.1103/PhysRevLett.121.035301
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
In this work we introduce boundary time crystals. Here continuous time-translation symmetry breaking occurs only in a macroscopic fraction of a many-body quantum system. After introducing their definition and properties, we analyze in detail a solvable model where an accurate scaling analysis can be performed. The existence of the boundary time crystals is intimately connected to the emergence of a time-periodic steady state in the thermodynamic limit of a many-body open quantum system. We also discuss connections to quantum synchronization.
引用
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页数：6
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