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What are we talking about when we discuss the Born-Oppenheimer approximation? (2507.12223v1)
Published 16 Jul 2025 in quant-ph and physics.hist-ph
Abstract: Nick Huggett, James Ladyman, and Karim Thebault (HLT) have presented a comprehensive article examining the Born-Oppenheimer Approximation (BOA). Their central objective is to challenge our position on the matter-namely, that the BOA incorporates a classical assumption incompatible with the Heisenberg Uncertainty Principle. In contrast, HLT contend that the BOA involves no such classical assumption and, as a result, supports the view that chemistry can be reduced to physics. The purpose of this paper is to offer a critical analysis of the HLT article and to clarify why we consider their arguments unpersuasive.