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arXiv 1601.02468hep-thhep-ph
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旋转电场中电子对产生的自旋共振效应

Spin Resonance Effect on Pair Production in Rotating Electric Fields

Chul Min Kim, Sang Pyo Kim

摘要:

本文提出了二维均匀含时电场中Dirac方程的一种新的解析方法,它将二分量旋量及其导数的Cauchy问题表示为含时本征旋量和含时能量本征值的跃迁率的时间序积分.在以后的时间从过去的无穷大的真空中演变,并不断地进行本征旋量之间的过渡和与时间相关的能量本征值的正负频率之间的过渡。电子和正电子对的产生由未来无穷远处的负频率的系数给出,该系数从过去无穷远处的正频率演化而来。在绝热情况下,当本征旋量和能量本征值转动的时间尺度远大于电子的康普顿时间时,我们发现自旋共振效应对电子对产生的影响,它简单地由自旋转动、电子对产生和能量本征值之间的连续传输系数决定,而不改变自旋态.

英文摘要:

We advance a new analytical method for the Dirac equation in two-dimensional, homogeneous, time-dependent electric fields, which expresses the Cauchy problem of the two-component spinor and its derivative as the time-ordered integral of the transition rate of the time-dependent eigenspinors and the time-dependent energy eigenvalues. The in-vacuum at later times evolves from that at the past infinity and continuously make transitions between eigenspinors and between positive and negative frequencies of the time-dependent energy eigenvalues. The production of electron and positron pairs is given by the coefficient of the negative frequency at the future infinity which evolves from the positive frequency at the past infinity. In the adiabatic case when the time scale for the rotation of eigenspinors and energy eigenvalues is much longer than the electron Compton time, we find the spin-resonance effect on the pair production, which is simply determined by the spin rotation, the pair production and the continuous transmission coefficients between the energy eigenvalues without the change of spin states.

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。

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