强laser产生的电场中真空产生的e-e+ γ等离子体的BBGKY动力学方法：单光子湮没通道
BBGKY kinetic approach for an e-e+gamma plasma created from the vacuum in a strong laser-generated electric field: The one-photon annihilation channel
摘要：
本文通过截断BBGKY方程组得到了一个封闭的动力学方程组，用于描述强激光场作用下电子-正电子等离子体和次级光子的真空产生。这种截断是在马尔可夫近似的单光子湮没通道，这是由于存在强外场访问。光子产生率的估计得到不同域的激光场参数（频率nu和场强E）。为了满足该通道中各组分（e-，e+，γ）的能量和动量守恒定律，需要大量的准经典激光场的可见光子。由于这些可见光子的数量对应于微扰理论的阶数，因此对于光学区域和强亚临界场E << E_c，光子产生率几乎为零。在γ射线区nu <~ m，所需的激光光子数很小，从单光子湮灭过程中产生光子的速率对于亚临界场E <~ E_c的观测是可以达到的。在红外区域中，光子分布具有闪烁噪声典型的1/k光谱。
英文摘要：
In the present work a closed system of kinetic equations is obtained from the truncation of the BBGKY hierarchy for the description of the vacuum creation of an electron - positron plasma and secondary photons due to a strong laser field. This truncation is performed in the Markovian approximation for the one-photon annihilation channel which is accessible due to the presence of the strong external field. Estimates of the photon production rate are obtained for different domains of laser field parameters (frequency nu and field strength E). A huge quantity of optical photons of the quasiclassical laser field is necessary to satisfy the conservation laws of energy and momentum of the constituents (e-, e+, gamma) in this channel. Since the number of these optical photons corresponds to the order of perturbation theory, a vanishingly small photon production rate results for the optical region and strongly subcritical fields E << E_c. In the gamma-ray region nu <~ m the required number of laser photons is small and the production rate of photons from the one-photon annihilation process becomes accessible to observations for subcritical fields E <~ E_c. In the infrared region the photon distribution has a 1/k spectrum typical for flicker noise.
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