Response to "Are Hilbert Spaces Unphysical? Hardly, My Dear!''

Fuente: arXiv
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Autori principali: Carcassi, Gabriele, Rozite, Robert, Aidala, Christine A.
Natura: Preprint
Pubblicazione: 2025
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author Carcassi, Gabriele
Rozite, Robert
Aidala, Christine A.
author_facet Carcassi, Gabriele
Rozite, Robert
Aidala, Christine A.
contents A recent criticism of our paper ``The unphysicality of Hilbert spaces'' by Nivaldo Lemos refutes our central argument that a state with finite expectation value can be mapped to a state with infinite expectation value by a coordinate transformation. By conflating coordinate transformation with change of basis in quantum mechanics, Lemos argues that expectation values are invariant under change of variables. In the present work, we clarify the distinction between coordinate transformation and change of basis, and rebut Lemos' main argument.
format Preprint
id arxiv_https___arxiv_org_abs_2507_09738
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Response to "Are Hilbert Spaces Unphysical? Hardly, My Dear!''
Carcassi, Gabriele
Rozite, Robert
Aidala, Christine A.
Quantum Physics
A recent criticism of our paper ``The unphysicality of Hilbert spaces'' by Nivaldo Lemos refutes our central argument that a state with finite expectation value can be mapped to a state with infinite expectation value by a coordinate transformation. By conflating coordinate transformation with change of basis in quantum mechanics, Lemos argues that expectation values are invariant under change of variables. In the present work, we clarify the distinction between coordinate transformation and change of basis, and rebut Lemos' main argument.
title Response to "Are Hilbert Spaces Unphysical? Hardly, My Dear!''
topic Quantum Physics
url https://arxiv.org/abs/2507.09738