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

页码：1875 / 1880

页数：6

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