On the adiabaticity of continum states: tunnelling through a time-dependent barrier
On the adiabaticity of continum states: tunnelling through a time-dependent barrier
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关于连续态的绝热性：穿过时间相关势垒的隧道
DOI：
10.1007/bf01436932
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发表时间：
1988
期刊：
影响因子：
--
通讯作者：
M. Kleber
中科院分区：
文献类型：
--
作者：
G. Scheitler;M. Kleber
本文用解析法求解了V（x，t）=λτ/tδ（x）的隧穿问题。Massey参数α=γτk/progression控制着隧道过程：对于α 1，动量为τ k的连续电子将调整其波函数以适应可变势垒;对于α 1，势垒的变化太突然而无法调整。特征时间τ用于阐明隧穿时间的概念。
The problem of tunnelling through a time-dependent delta-function barrier,V(x, t) =λτ/tδ(x), has been solved analytically fort≧0. The Massey parameter α=γτk/ħ controls the tunnel process: For α≫1, a continuum electron with momentum ħk will adjust its wavefunction to the variable barrier; for α≪1 the change of the barrier is too sudden to allow for adjustment. The characteristic time τ is used to clarify the concept of a tunnelling time.