圆偏振laser光束场中标量粒子的光生
Photo-production of scalar particles in the field of a circularly polarized laser beam
摘要：
研究了在强圆偏振激光束作用下标量粒子对的光生过程。利用标量量子电动力学框架内的光学定理，给出了真空极化张量虚部对产生几率的显式表达式。它的领先的渐近行为是确定各种限制的利益。内部自旋自由度的情况下的影响进行了分析，通过与相应的概率为生产自旋1/2粒子的比较;缺乏自旋被证明抑制对创建率，从狄拉克理论的预测相比。潜在的应用，我们的研究结果的搜索微荷电粒子的指示。
英文摘要：
The photo-production of a pair of scalar particles in the presence of an intense, circularly polarized laser beam is investigated. Using the optical theorem within the framework of scalar quantum electrodynamics, explicit expressions are given for the pair production probability in terms of the imaginary part of the vacuum polarization tensor. Its leading asymptotic behavior is determined for various limits of interest. The influence of the absence of internal spin degrees of freedom is analyzed via a comparison with the corresponding probabilities for production of spin-1/2 particles; the lack of spin is shown to suppress the pair creation rate, as compared to the predictions from Dirac theory. Potential applications of our results for the search of minicharged particles are indicated.
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