幂级数展开法计算周期阻尼振子路径积分短时传播子  

Studying Path Intergration Short-time Propgator of the Periodic Damp Harmonic Oscillator by Power Series Expansion Method

作　　者：欧元锦[1] 梁先庭[2] 

机构地区：[1]公安海警高等专科学校基础部 [2]宁波大学物理系与近代物理研究所

出　　处：《量子光学学报》2009年第2期106-109,共4页Journal of Quantum Optics

摘　　要：文章用Schwinger方法与Makri等人发展的幂级数展开法研究了周期阻尼简谐振子的传播子。研究表明,这两种方法所获得的短时传播子非常接近,但是后者比前者要简单得多,这给研究复杂系统的传播子提供了一个简单可靠的方法。In this paper we investigate the short-time propagator of the periodic damp harmonic oscillator by using Schwinger method and power series expansion technique which developed by Makli and her colleagues. It is found that the short-time propagators obtained by using the above two methods are nearly equal, but using power series expansion technique is much easier than Schwinger method.

关 键 词：阻尼振子 传播子 路径积分 

分 类 号：O431[机械工程—光学工程]