Renormalization of the Lorentz-Abraham-Dirac equation for radiation reaction force in classical electrodynamics
Renormalization of the Lorentz-Abraham-Dirac equation for radiation reaction force in classical electrodynamics
复制标题
经典电动力学中辐射反作用力洛伦兹-亚伯拉罕-狄拉克方程的重整化
DOI：
10.1134/s1063776109080044
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发表时间：
2009
影响因子：
1.1
通讯作者：
I. Sokolov
中科院分区：
文献类型：
--
作者：
I. Sokolov
狄拉克在经典电动力学中对辐射反作用力的分析表明，辐射电子可以引入与4速度不共线的4动量。这等同于将电子质量重整化为关联这四个矢量的算符。狄拉克还指出，在推导洛伦茨-亚伯拉罕-狄拉克(LAD)方程时，人们做出了武断的选择。结果表明，在标准相对论关系ℰ2=P2C2+m2C4对重整化能量和动量成立的附加条件下，重整化对LAD方程有很大的修正作用。重整化的LAD方程比LAD方程更严格，因为后者的缺点被消除了，并且比众所周知的LAD方程的近似更简单。重整化的LAD方程似乎更适合于超高强度激光脉冲场过程的数值模拟。
Dirac’s analysis of radiation reaction force in classical electrodynamics suggested that a 4-momentum not collinear with 4-velocity could be introduced for a radiating electron. This would be equivalent to renormalization of the electron mass as an operator relating these 4-vectors. Dirac also pointed to an arbitrary choice made in deriving the Lorentz-Abraham-Dirac (LAD) equation. It was shown that renormalization substantially modifies the LAD equation under the additional requirement that the standard relativistic relation ℰ2=p2c2+m2c4holds for the renormalized energy and momentum. The renormalized LAD equation is more rigorous than the LAD equation, because the drawbacks of the latter are eliminated, and is simpler than a well-known approximation of the LAD equation. The renormalized LAD equation appears to be better suited for numerical simulations of processes in ultrahigh-intensity laser-pulse fields.
影响因子：
1.1
作者：
Bulanov, SV;Esirkepov, TZ;Tajima, T
通讯作者：
Tajima, T