Dynamical suppression and enhancement of instability for an unstable state by a periodic external field
Dynamical suppression and enhancement of instability for an unstable state by a periodic external field
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周期性外场对不稳定状态的动态抑制和不稳定性增强
DOI：
10.1103/physrevb.86.014302
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发表时间：
2012
影响因子：
3.7
通讯作者：
T. Petrosky
中科院分区：
文献类型：
--
作者：
N. Yamada;Ken–ichi Noba;Satoshi Tanaka;T. Petrosky
利用周期驱动Fano-Anderson系统Floquet哈密顿量准能谱的复谱表示，分析了不稳定离散态不稳定性的抑制和增强（Friedrichs）电子模型。基于Floquet-绿色函数形式主义，对于耦合不稳定的系统，得到了对应于不稳定离散状态的复拟特征值的解析表达式，离散态和连续态之间的联系很弱。对复准能的分析表明，选择合适的驱动场参数，可以抑制或增强离散态的衰减速率。
Suppression and enhancement of instability for an unstable discrete state is analyzed in terms of a complex spectral representation of the quasienergy spectrum of the Floquet Hamiltonian for a periodically driven Fano-Anderson (Friedrichs) model of an electron. Based on the Floquet--Green's function formalism, the analytical expression of the complex quasieigenvalue corresponding to the unstable discrete state is obtained for the system where the coupling between the discrete state and the continuum is weak. The analysis of the complex quasienergy indicates that the decay rate of the discrete state can be suppressed, or enhanced, with a suitable choice of parameters of the driving field.
影响因子：
2.9
作者：
Kudo, K.;Monteiro, T. S.
通讯作者：
Monteiro, T. S.
影响因子：
3.7
作者：
Tanaka, S.;Garmon, S.;Petrosky, T.
通讯作者：
Petrosky, T.