中国物理B ›› 2021, Vol. 30 ›› Issue (7): 70306-070306.doi: 10.1088/1674-1056/abe378

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Creation and annihilation phenomena of electron and positron pairs in an oscillating field

M Jiang(江淼)1,2, D D Su(苏丹丹)3, N S Lin(林南省)1,2, and Y J Li(李英骏)1,2,†   

  1. 1 School of Science, China University of Mining and Technology, Beijing 100083, China;
    2 State Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining and Technology, Beijing 100083, China;
    3 Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
  • 收稿日期:2020-11-26 修回日期:2021-01-24 接受日期:2021-02-05 出版日期:2021-06-22 发布日期:2021-06-22
  • 通讯作者: Y J Li E-mail:lyj@aphy.iphy.ac.cn
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 11974419 and 11605286), the Strategic Priority Research Program of Chinese Academy of Sciences (Grant No. XDA25051000), and the National Key R&D Program of China (Grant No. 2018YFA0404802).

Creation and annihilation phenomena of electron and positron pairs in an oscillating field

M Jiang(江淼)1,2, D D Su(苏丹丹)3, N S Lin(林南省)1,2, and Y J Li(李英骏)1,2,†   

  1. 1 School of Science, China University of Mining and Technology, Beijing 100083, China;
    2 State Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining and Technology, Beijing 100083, China;
    3 Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
  • Received:2020-11-26 Revised:2021-01-24 Accepted:2021-02-05 Online:2021-06-22 Published:2021-06-22
  • Contact: Y J Li E-mail:lyj@aphy.iphy.ac.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 11974419 and 11605286), the Strategic Priority Research Program of Chinese Academy of Sciences (Grant No. XDA25051000), and the National Key R&D Program of China (Grant No. 2018YFA0404802).

摘要: The combination of an oscillating and a static field is used to study the creation and annihilation phenomena during the pair creation process. The time evolution, spatial density and momentum distribution of the created particles for a fermionic system are presented, which demonstrate that with the increasing static field intensity, the number of the created particles experiences a distinguishable decrease in every period of the oscillating field, which is caused by the annihilation phenomena between the created electrons and positrons.

关键词: pair creation, computational quantum field theory, strong laser field

Abstract: The combination of an oscillating and a static field is used to study the creation and annihilation phenomena during the pair creation process. The time evolution, spatial density and momentum distribution of the created particles for a fermionic system are presented, which demonstrate that with the increasing static field intensity, the number of the created particles experiences a distinguishable decrease in every period of the oscillating field, which is caused by the annihilation phenomena between the created electrons and positrons.

Key words: pair creation, computational quantum field theory, strong laser field

中图分类号:  (Quantum mechanics)

  • 03.65.-w
42.25.Bs (Wave propagation, transmission and absorption) 03.65.Pm (Relativistic wave equations) 12.20.Ds (Specific calculations)