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Electron-positron pair production in ultrastrong laser fields

查看全文 作  者:Bai Song [1,2]Xie;Zi Liang [1,3]Li;Suo [1,4]Tang 高影响力作者 机构地区:[1]College of Nuclear Science and Technology,Beijing Normal University,Beijing 100875,China;[2]Beijing Radiation Center,Beijing 100875,China;[3]School of Science,China University of Mining and Technology,Beijing 100083,China;[4]Max-Planck-Institut fur Kernphysik,Saupfercheckweg 1,69117 Heidelberg,Germany高影响力机构 出  处:《Matter and Radiation at Extremes》索引2017年第2卷第5期,共18页高影响力期刊 基  金:This work was supported by the National Natural Science Foundation of China(NSFC)under Grant Nos.11475026,11175023;also supported partially by the Open Fund of National Laboratory of Science and Technology on Computational Physics at IAPCM and the Fundamental Research Funds for the Central Universities(FRFCU). 摘  要:Electronepositron pair production due to the decay of vacuum in ultrastrong laser fields is an interesting topic which is revived recently because of the rapid development of current laser technology.The theoretical and numerical research progress of this challenging topic is reviewed.Many new findings are presented by different approaches such as the worldline instantons,the S-matrix theory,the kinetic method by solving the quantum Vlasov equation or/and the real-time DiraceHeisenbergeWigner formalism,the computational quantum field theory by solving the Dirac equation and so on.In particular,the effects of electric field polarizations on pair production are unveiled with different patterns of created momentum spectra.The effects of polarizations on the number density of created particles and the nonperturbative signatures of multiphoton process are also presented.The competitive interplay between the multiphoton process and nonperturbation process plays a key role in these new findings.These newly discovered phenomena are valuable to deepen the understanding of pair production in complex fields and even have an implication to the study of strong-field ionization.More recent studies on the pair production in complex fields as well as beyond laser fields are briefly presented in the view point of perspective future. 关 键 词:Strong field physics Vacuum pair production Nonlinear quantum electrodynamics
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