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arXiv physics/0606009physics.class-ph
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关于相对论的新观点:第二部分。相对论性动力学

A new view on relativity: Part 2. Relativistic dynamics

Yaakov Friedman

摘要:

洛伦兹变换在相对论容许速度球上用爱因斯坦速度相加和旋转表示。这种表示是由射影映射。相对论动力学方程可以通过引入一个类似于爱因斯坦等效原理的新原理导出,但可以应用于任何力。根据这一原理,相对论动力学方程由上述表示的李代数的一个元素定义。如果我们引入一个新的动态变量,称为对称速度,上述表示就变成了一个保角表示,而不是射影映射。在这个变量中,具有不变平面的系统的相对论动力学方程变成了一个复变量的非线性解析方程。本文给出了电荷在均匀、相互垂直的电场和磁场中运动的显式解。利用上述原理,我们证明了四速度的相对论动力学方程可导出电磁张量的一个模拟。这表明,在狭义相对论中,力是用微分二形式描述的。

英文摘要:

The Lorentz transformations are represented on the ball of relativistically admissible velocities by Einstein velocity addition and rotations. This representation is by projective maps. The relativistic dynamic equation can be derived by introducing a new principle which is analogous to the Einstein's Equivalence Principle, but can be applied for any force. By this principle, the relativistic dynamic equation is defined by an element of the Lie algebra of the above representation. If we introduce a new dynamic variable, called symmetric velocity, the above representation becomes a representation by conformal, instead of projective maps. In this variable, the relativistic dynamic equation for systems with an invariant plane, becomes a non-linear analytic equation in one complex variable. We obtain explicit solutions for the motion of a charge in uniform, mutually perpendicular electric and magnetic fields. By the above principle, we show that the relativistic dynamic equation for the four-velocity leads to an analog of the electromagnetic tensor. This indicates that force in special relativity is described by a differential two-form.

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