When young Kant meditated upon the distinction between his right and left hands, he could not foresee that the problem of incongruent counterparts would revive in the twentieth century under a new form. In the early days of quantum chemistry, Friedrich Hund developed the so-called Hund paradox that arises from the supposed inability of quantum mechanics to account for the difference between enantiomers. In this paper, the paradox is expressed as a case of quantum measurement, stressing that decoherence does not offer a way out of the problem. The main purpose is to argue for the need to adopt a clear interpretation of quantum mechanics in order to solve the paradox. In particular, I claim that the Modal-Hamiltonian Interpretation, which conceives measurement as a breaking-symmetry process, supplies the tools required to explain the dextro-rotation or levo-rotation properties of optical isomers.

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光学异构问题与量子力学的解释

年轻的康德在思考左右手的区别时，没有预见到手不协调的问题会以一种新的形式在 20 世纪卷土重来。在量子化学的早期，弗里德里希·洪德 (Friedrich Hund) 提出了所谓的洪德悖论，该悖论源于假设量子力学无法解释对映异构体之间的差异。在本文中，悖论被表述为量子测量的一个案例，强调退相干并没有提供解决问题的方法。主要目的是论证需要采用对量子力学的清晰解释以解决悖论。特别是，我声称，将测量视为打破对称过程的模态-汉密尔顿解释，