期刊
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
卷 117, 期 2, 页码 663-672出版社
SPRINGER
DOI: 10.1007/s00339-014-8720-9
关键词
-
资金
- European Union [FP7-REGPOT-2012-2013-1, 316165]
- Thales Project ANEMOS
- Greek national funds through the Operational Program Education and Lifelong Learning of the National Strategic Reference Framework (NSRF) Research Funding Program: THALES. Investing in knowledge society through the European Social Fund
PT-symmetric dimers with a time-periodic gain/loss function in a balanced configuration where the amount of gain equals that of loss are investigated analytically and numerically. Two prototypical dimers in the linear regime are investigated: a system of coupled classical oscillators, and a Schrodinger dimer representing the coupling of field amplitudes, each system representing a wide class of physical models. Through a thorough analysis of their stability behavior, we find that turning on the coupling parameter in the classical dimer system leads initially to decreased stability but then to re-entrant transitions from the exact to the broken PT-phase and vice versa, as it is increased beyond a critical value. On the other hand, the Schrodinger dimer behaves more like a single oscillator with time-periodic gain/loss. In addition, we are able to identify the conditions under which the behavior of the two dimer systems coincides and/or reduces to that of a single oscillator.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据