arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1104.5299quant-ph
收藏

有角动量系统在电场和磁场中的Berry相位

Berry Phase for Systems with Angular Momenta in Electric and Magnetic Fields

K. J. B. Ghosh, D. De Munshi, B. Dutta-Roy

摘要:

本文讨论了由两个角动量组成的各种系统的Berry相。这些包括氢原子基态的电子和质子(考虑到超精细相互作用),正电子素原子,单个电子的自旋和轨道角动量,在外部磁场中氘核对μ子的捕获等。虽然涉及的时间尺度,潜在的内禀哈密顿量是相当不同的,可能的实验探针也是如此,发现由于随时间变化的外部施加的磁场导致的Berry相位的结果的几何性质是相当稳健的。同时也指出了时变电场的研究方向。这项工作的目的是试图扩大这种研究的范围在实验和理论方向。

英文摘要:

The Berry phase for a variety of systems comprising of two angular momenta is discussed. These include the electron and proton in the ground state of the hydrogen atom (taking into account the hyperfine interaction), the positronium atom, the spin and orbital angular momenta of a single electron, muon capture by the deuteron in an external magnetic field, etc. Though the time scales involved, the underlying intrinsic Hamiltonians are quite different, as also the possible experimental probes, the geometric nature of the results for the Berry phase due to a time varying externally imposed magnetic field is found to be quite robust. Some indications are also put forward as to the possible interesting studies with time varying electric fields. The objective of this work is an attempt to broaden the scope of such studies in both the experimental and theoretical directions.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑