We use the Liénard–Wiechert potential to show that very violent fluctuations are experienced by an electromagnetic charged extended particle when it is perturbed from its rest state. The feedback interaction of Coulombian and radiative fields among different charged parts of the particle makes uniform motion unstable. Then, we show that radiative fields and radiation reaction produce dissipative and antidamping effects, triggering a self-oscillation. Finally, we compute the self-potential, which in addition to rest and kinetic energy, gives rise to a new contribution that shares features with the quantum potential. We suggest that this contribution to self-energy produces a symmetry breaking of the Lorentz group, bridging classical electromagnetism and quantum mechanics.

我们使用Liénard–Wiechert势表明，当带电的扩展粒子从其静止状态受到扰动时，会经历非常剧烈的波动。粒子的不同带电部分之间的库仑和辐射场的反馈相互作用使得匀速运动不稳定。然后，我们表明辐射场和辐射反应会产生耗散和抗阻尼效应，从而引发自激振荡。最后，我们计算了自势，除了静止能和动能之外，还产生了与量子势共享特征的新贡献。我们认为，这种对自能量的贡献使洛伦兹群的对称性破裂，将经典的电磁学和量子力学联系起来。