排序方式: 共有6条查询结果,搜索用时 15 毫秒
1
1.
2.
By using the Faddeev-Senjanovic path integral quantization method, we quantize the composite fermions in quantum electrodynamics (QED). In the sense of Dirac’s conjecture, we deduce all the constraints and give Dirac’s gauge transformations (DGT). According to that the effective action is invariant under the DGT, we obtain the Noether theorem at the quantum level, which shows the fractional charges for the composite fermions in QED. This result is better than the one deduced from the equations of motion for the statistical potentials, because this result contains both odd and even fractional numbers. Furthermore, we deduce the Noether theorem from the invariance of the effective action under the rotational transformations in 2-dimensional (x, y) plane. The result shows that the composite fermions have fractional spins and fractional statistics. These anomalous properties are given by the constraints for the statistical gauge potential. 相似文献
3.
以氨基封端的苯胺四聚体为基础, 通过将端氨基取代为不同数量的羧基, 得到了一系列连接臂数不同的苯胺四聚体-聚乙二醇共聚物, 对反应历程中的各阶段产物进行了结构表征, 并对苯胺四聚体及最终产物进行了电化学性能测试. 结构表征证明反应按照设计路线成功进行并得到了理想的产物; 循环伏安特性曲线表明, 共聚物基本保留了苯胺四聚体的电化学性能, 可以发生从还原态到中间态再到氧化态的转变. 相似文献
4.
Application of Symplectic Algebraic Dynamics Algorithm to Circular Restricted Three-Body Problem 下载免费PDF全文
Symplectic algebraic dynamics algorithm (SADA ) for ordinary differential equations is applied to solve numerically the circular restricted three-body problem (CR3BP) in dynamical astronomy for both stable motion and chaotic motion. The result is compared with those of Runge~Kutta algorithm and symplectic algorithm under the fourth order, which shows that SADA has higher accuracy than the others in the long-term cMculations of the CR3BP. 相似文献
5.
The influence of parameters such as the strength and
frequency of a periodic driving force on the tunneling dynamics is
investigated in a symmetric triple-well potential. It is shown that
for some special values of the parameters, tunneling could be
enhanced considerably or suppressed completely. Quantum fluctuation
during the tunneling is discussed as well and the numerical results
are presented and analysed by virtue of Floquet formalism. 相似文献
6.
1