| 虚时间步长法的狄拉克海难 |
| |
| 引用本文： | 李芳琼,蔡立.虚时间步长法的狄拉克海难[J].遵义师范学院学报,2011,13(3):69-71,92. |
| |
| 作者姓名： | 李芳琼 蔡立 |
| |
| 作者单位： | 贵州民族学院,贵州贵阳,550025 |
| |
| 基金项目： | 贵州省科技厅自然科学基金资助项目 |
| |
| 摘 要： | 通过用虚时间步长法(ITS)演化由Dirac方程导出的Schrdinger-like方程得到了Fermi海和Dirac海中12C分离的单粒子能谱,避免了出现狄拉克海难。将ITS方法直接用于求解Dirac方程,会导致单粒子能谱只能演化到狄拉克海中。研究发现,通过将Dirac方程转化为等效的Schrdinger-like方程,从正无穷延伸到负无穷的单粒子能谱可以分别在Fermi海或Dirac海中通过ITS演化而获得。利用ITS方法演化等效的Schrdinger-like方程得到了与常规Shooting方法相同的结果,此事实证明了该算法的可行性、实用性及可靠性,同时消除了能否将ITS方法应用于描述相对论系统的质疑。
|
| 关 键 词： | 狄拉克海难 虚时间步长法 Schrdinger-like方程 Dirac方程 |
On Avoidance of the Tsunami of the Dirac Sea by ITS |
| |
| LI Fang-qiong,CAI Li.On Avoidance of the Tsunami of the Dirac Sea by ITS[J].Journal of Zunyi Normal College,2011,13(3):69-71,92. |
| |
| Authors: | LI Fang-qiong CAI Li |
| |
| Institution: | LI Fang-qiong,CAI Li(Guizhou University for Nationalities,Guiyang 550025,China) |
| |
| Abstract: | The discrete single-particle spectra of 12C in both the Fermi and Dirac sea have been calculated by the imaginary time step(ITS)method for the Schr dinger-like equation after avoiding the tsunami of the Dirac sea,i.e.,the diving behavior of the single-particle level into the Dirac sea in the direct application of the ITS method for the Dirac equation.It is found that by the transform from the Dirac equation to the Schr dinger-like equation,the single-particle spectra,which extend from the positive to the ne... |
| |
| Keywords: | the tsunami of the Diracsea imaginary time step method Schr dinger-like equation Dirac equation |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
