Variational principle for time-periodic quantum systems

被引：3
|
作者：
Krueger, Nils [1 ]
机构：
[1] Carl von Ossietzky Univ Oldenburg, Inst Phys, D-26111 Oldenburg, Germany
来源：
ZEITSCHRIFT FUR NATURFORSCHUNG SECTION A-A JOURNAL OF PHYSICAL SCIENCES | 2020年 / 75卷 / 10期
关键词：
Floquet states; periodically driven quantum systems; quasienergy; variational principle; FLOQUET OPERATORS;
D O I：
10.1515/zna-2020-0209
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
A variational principle enabling one to compute individual Floquet states of a periodically time-dependent quantum system is formulated, and successfully tested against the benchmark system provided by the analytically solvable model of a linearly driven harmonic oscillator. The principle is particularly well suited for tracing individual Floquet states through parameter space, and may allow one to obtain Floquet states even for very high-dimensional systems which cannot be treated by the known standard numerical methods.
引用
收藏
页码：855 / 861
页数：7
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