There have been various claims that the Equivalence Principle, as originally formulated by Einstein, presents several difficulties when extended to the quantum domain, even in the regime of weak gravity. Here we point out that by following the same approach as used for other classical principles, e.g., the principle of conservation of energy, one can, for weak fields, obtain a straightforward quantum formulation of the principle. We draw attention to a recently performed test that confirms the Equivalence Principle in this form and discuss its implications.

中文翻译：

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等效原理作为检测引力t3相的量表原理的可测性

有各种说法认为，爱因斯坦最初提出的等效原理在扩展到量子域时，即使在弱重力的情况下，也存在一些困难。在这里，我们指出，通过遵循与其他经典原理相同的方法，例如能量守恒原理，对于弱场，可以得到该原理的简单量子公式。我们提请注意最近进行的测试，该测试以这种形式确认了等效原理并讨论了其含义。