Abstract We analyze the Balazs thought experiment under minimal assumptions and show that the two expressions for the force density that have been recently discussed in the literature (the conventional Lorentz force density and the generalized or Einstein-Laub force density) are fully consistent with conservation of energy, conservation of momentum and the center-of-energy theorem. This conclusion contradicts some of the previously published claims that the conventional Lorentz force density is inconsistent with the center-of-energy theorem. We identify the sources of errors in these claims. We conclude that the conventional Lorentz force density captures all experimentally-observable effects of interaction of electromagnetic fields with matter and no other law or postulate (such as a resolution of the so-called Abraham-Minkowski dilemma) is necessary.

中文翻译：

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Balazs 思想实验及其对连续介质中电磁力密度的影响。相对论分析

摘要 我们在最小假设下分析了 Balazs 思想实验，并表明最近在文献中讨论的力密度的两个表达式（常规洛伦兹力密度和广义或爱因斯坦-劳布力密度）完全符合守恒能量、动量守恒和能量中心定理。这一结论与之前发表的一些声称传统的洛伦兹力密度与能量中心定理不一致的说法相矛盾。我们确定了这些声明中的错误来源。