辐射反作用力因果关系问题的新思考
Thinking anew causality problems for the radiation reaction force
摘要：
在这项工作中，我们分析了拉格朗日形式主义最近提出的亚伯拉罕-洛伦兹力的问题。与通常的经典力学中只涉及位置和速度不同，这个拉格朗日量涉及电荷的加速度。我们发现在没有任何领域的电荷的守恒动量，并表明它包含一个加速项。这使我们能够重新审视众所周知的加速前问题，并表明，与人们普遍认为的相反，它与违反因果关系无关。
英文摘要：
In this work, we analyze a Lagrangian formalism recently proposed to approach the issue of the Abraham-Lorentz force. Instead of involving only position and velocity, as usual in Classical Mechanics, this Lagrangian involves the acceleration of the charge. We find the conserved momentum of the charge in the absence of any field and show that it contains an acceleration term. This enables us to re-visit the well-known pre-acceleration problem and show that, contrary to what has been widely believed, it is not related to any violation of causality.
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