Periodic Steady Regime and Interference in a Periodically Driven Quantum System

被引：158
作者：
Russomanno, Angelo [1 ,2 ]
Silva, Alessandro [3 ]
Santoro, Giuseppe E. [1 ,2 ,3 ]
机构：
[1] SISSA, I-34136 Trieste, Italy
[2] CNR IOM Democritos Natl Simulat Ctr, I-34136 Trieste, Italy
[3] Abdus Salaam Int Ctr Theoret Phys, I-34014 Trieste, Italy
来源：
PHYSICAL REVIEW LETTERS | 2012年 / 109卷 / 25期
关键词：
ADIABATIC EVOLUTION; DYNAMICS; THERMALIZATION; TRANSITION;
D O I：
10.1103/PhysRevLett.109.257201
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We study the coherent dynamics of a quantum many-body system subject to a time-periodic driving. We argue that in many cases, destructive interference in time makes most of the quantum averages time periodic, after an initial transient. We discuss in detail the case of a quantum Ising chain periodically driven across the critical point, finding that, as a result of quantum coherence, the system never reaches an infinite temperature state. Floquet resonance effects are moreover observed in the frequency dependence of the various observables, which display a sequence of well-defined peaks or dips. Extensions to nonintegrable systems are discussed. DOI: 10.1103/PhysRevLett.109.257201
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页数：5
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