摘要
通过求解自旋-玻色子模型下的薛定谔方程的数值解,验证并探讨声子模的Fock|N〉的个数N的收敛性;即N增大到一定值(记这个数值为NL)后,薛定谔方程的数值解保存不变;定性的分析耗散两能级系统中自旋翻转的动力学特性。发现声子库耦合的引入,使得自旋的隧穿,在两能级相遇之前就可能明显发生。声子的存在使粒子能跳跃到较高能级,不用等到两能级相遇的时候,就有一部分粒子可以跳跃并隧穿过去,实现自旋的翻转。
Numerical solutoin of Schrdinger equation on spin-boson model of single model has been done and the results show that the amount of Fock ｜N〉converges to a constant value while other parameters are given and keep unchanged.Moreover,by the interaction with phonons,the spin can achieve flip through jumping and tunneling before the crossing of two lelves in the dissipative two-level system.
出处
《科学技术与工程》
2011年第1期106-109,共4页
Science Technology and Engineering
