高斯波包 meaning in English
gaussian wave group
Examples
- Gaussian wave group
高斯波包 - The use of wave packet to analyze the dynamics of quantum mechanical systems is an increasingly important method to the study of the classical - quantum correspondence . using the quantum gaussian wave packet analysis method , we calculate the autocorrelation function of the rectangular billiard , the peak positions of the autocorrelation function match well with the periods of the classical periodic orbits , which show that the period of the classical orbits can be produced by the time - dependent quantum wave packet method . we also discuss wave packet revivals and fractional revivals in the rectangular billiard , the results show that there are exact revival for all wave packet at each revival time . we find additional cases of exact revivals with short revival times for zero - momentum wave packets initially located at special symmetry point inside the billiard
利用波包分析量子力学体系的动力学行为在研究经典和量子的对应关系方面越来越成为一个非常重要的方法.利用高斯波包分析方法,我们计算了矩形弹子球体系的自关联函数,自关联函数的峰和经典周期轨道的周期符合的很好,这表明经典周期轨道的周期可以通过含时的量子波包方法产生.我们还讨论了矩形弹子球的波包回归和波包的部分回归,计算结果表明在每一个回归时间,波包出现精确的回归.对于动量为零的波包,初始位置在弹子球内部的特殊对称点处,出现一些时间比较短的附加的回归 - When the pulse width of input gaussian wave packet was reduced and the length of forbidden region retained , the result displayed the output signal distorted seriously and its spectrum changed very hard . a frequency above the cut - off frequency became the main frequency and the group velocity was below than c
在保持截止区长度不变，而减小输入高斯波包的脉冲宽度时，模拟显示输出波形严重失真，而且，频谱也发生很大的变化，主频已变为一高于截止频率的频率，群速度小于光速c 。 - The followings were discovered in the simulations of undersized waveguide : when the pulse width of input signal , a gaussian packet , is rather wide , the output signal distorted little . a superluminal group velocity 3 . 21c was revealed when the wave packet crossing 50mm forbidden region
对凹陷波导（ undersizedwaveguide ）的模拟发现：输入脉冲宽度较大的高斯波包，模拟结果显示输出波形失真较小，经过计算得到电磁波包穿过长50mm的截止区时，电场的幅度衰减了- 41 . 5db ，群速度为3 . 21c 。