随着超短超强激光技术的快速发展，目前国际上对达到或接近 Schwinger 极限强度的激光场与真空相互作用过程中量子效应的研究已成为高能量密度物理中的热点研究课题之一。本项目拟针对激光场在真空中诱发正负粒子对的这一前沿物理问题开展前瞻性的理论研究。利用现有的一维量子场论模拟程序，研究粒子对产生过程中的机制。发展二维的计算量子场论模拟程序，研究电场和磁场共同作用下的粒子对产生规律。利用上述程序探索各种不同频率、强度和偏振态的激光组合降低电子对产生的场强阈值的可能性，为未来的实验提供有价值的理论指导。本项目将在这一国际前沿领域进行自主的深入探索，锻炼该领域的一支稳定的研究队伍，力争取得原创性和突破性的进展。

The interaction of laser field toward to Schwinger limit with vacuum becomes more and more attractive subject in the world due to the fast development of ultra-intense laser technologies. This project is aimed to investigation of the particle-antiparticle pair production from vacuum irradiated by laser field. Firstly, we will study the mechanism and principle in the pair creation process using the 1D program. Then we will carry out a 2D program, and the characteristics of pair production in both magnetic and electric field will be investigated. The possibility to reduce the threshold intensity of driven laser by combination of different electromagnetic field will be also explored using the programs. The results of this project may provide valuable reference for the future experiment. The original innovation results can be obtained, and a stable research team in this frontier will be build due to this project.