NUMERICAL COMPUTATION OF DYNAMICAL SCHWINGER-LIKE PAIR PRODUCTION IN GRAPHENE

被引：6
|
作者：
Fillion-Gourdeau, F. [1 ,2 ]
Blain, P. [1 ]
Gagnon, D. [1 ,2 ]
Lefebvre, C. [1 ,2 ]
Maclean, S. [1 ,2 ]
机构：
[1] Univ Quebec, Inrs Energie Mat & Telecommun, Varennes, PQ, Canada
[2] Univ Waterloo, Inst Quantum Comp, Waterloo, ON, Canada
来源：
RUSSIAN PHYSICS JOURNAL | 2017年 / 59卷 / 11期
关键词：
graphene; pair production; Dirac equation; Schwinger mechanism; DIRAC-EQUATION;
D O I：
10.1007/s11182-017-0990-1
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The density of electron-hole pairs produced in a graphene sample immersed in a homogeneous time-dependent electric field is evaluated. Because low energy charge carriers in graphene are described by relativistic quantum mechanics, the calculation is performed within the strong field quantum electrodynamics formalism, requiring a solution of the Dirac equation in momentum space. The equation is solved using a split-operator numerical scheme on parallel computers, allowing for the investigation of several field configurations. The strength of the method is illustrated by computing the electron momentum density generated from a realistic laser pulse model. We observe quantum interference patterns reminiscent of Landau-Zener-Stuckelberg interferometry.
引用
收藏
页码：1875 / 1880
页数：6
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