期刊论文

Luo, Xiaobing

英文

JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL

1751-8113

2014

47

34

345301

10.1088/1751-8113/47/34/345301

NSF of ChinaNational Natural Science Foundation of China (NSFC) [10965001, 11165009, NCET-13-0836, 11105020]; Jiangxi Young Scientists Training Plan [20112BCB23024]; Atomic and Molecular Physics Key Discipline of Jiangxi Province; China Scholarship CouncilChina Scholarship Council; Scientific and Technological Research Fund of Jiangxi Provincial Education Department [GJJ14566]; Hunan Provincial Education DepartmentHunan Provincial Education Department [13B134]

本校为其他机构

We investigate the periodically modulated two-level systems with balanced gain and loss by means of a multiple-scale asymptotic analysis. The pseudo-parity-time symmetry (2013 Phys. Rev. Lett. 110 243902), which is often neglected in exact numerical simulations and totally lost in the commonly used high-frequency averaging approximation, has been fully understood in the framework of the second-order perturbative theory. Our work indicates that the multiple-scale asymptotic expansion method can be used to predict precisely some subtle and important dynamical...