arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1709.06997hep-th
收藏

粒子散射和真空不稳定性的指数阶

Particle scattering and vacuum instability by exponential steps

S. P. Gavrilov, D. M. Gitman, A. A. Shishmarev

摘要:

研究了由两个独立部分(指数增长和指数下降)组成的具有特殊峰位的恒定非均匀电场中的粒子散射和真空不稳定性。本文提出了一种新的外场,在这种外场中,Dirac方程和Klein-Gordon方程的精确解可以被找到,我们得到并分析了在这种外场中Dirac方程和Klein-Gordon方程的内外解。在它们的帮助下,我们计算了粒子散射的几率和真空不稳定性的特征。特别是,我们详细考虑三种配置:平滑峰,尖锐峰和强不对称峰配置。我们发现的总平均数的创建粒子和真空到真空的过渡概率的渐近表达式。我们讨论了一个新的正则化的克莱因步骤的尖锐的峰值,并比较这个正则化与另一个由Sauter势。

英文摘要:

Particle scattering and vacuum instability in a constant inhomogeneous electric field of particular peak configuration that consists of two (exponentially increasing and exponentially decreasing) independent parts are studied. It presents a new kind of external field where exact solutions of the Dirac and Klein-Gordon equations can be found. We obtain and analyze in- and out-solutions of the Dirac and Klein-Gordon equations in this configuration. By their help we calculate probabilities of particle scattering and characteristics of the vacuum instability. In particular, we consider in details three configurations: a smooth peak, a sharp peak, and a strongly asymmetric peak configuration. We find asymptotic expressions for total mean numbers of created particles and for vacuum-to-vacuum transition probability. We discuss a new regularization of the Klein step by the sharp peak and compare this regularization with another one given by the Sauter potential.

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。

↑