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

作　　者：M Jiang D D Su N S Lin Y J Li 江淼;苏丹丹;林南省;李英骏(School of Science,China University of Mining and Technology,Beijing 100083,China;State Key Laboratory for Geomechanics and Deep Underground Engineering,China University of Mining and Technology,Beijing 100083,China;Beijing National Laboratory for Condensed Matter Physics,Institute of Physics,Chinese Academy of Sciences,Beijing 100190,China)

机构地区：[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

出　　处：《Chinese Physics B》2021年第7期151-156,共6页中国物理B（英文版）

基　　金：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);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 

分 类 号：O572[理学—粒子物理与原子核物理]