English

All quantum mixtures are proper

Quantum Physics 2022-01-13 v1 High Energy Physics - Theory History and Philosophy of Physics

Abstract

It is argued that proper and improper quantum mixed states have no observable differences, and hence should not be distinguished. This has implications for subjective approaches to quantum mechanics, and invalidates one of the main motivations for relational interpretations of QM.

Keywords

Cite

@article{arxiv.2201.04143,
  title  = {All quantum mixtures are proper},
  author = {Leonardo Castellani},
  journal= {arXiv preprint arXiv:2201.04143},
  year   = {2022}
}

Comments

9 pages, 3 figures, LaTeX

R2 v1 2026-06-24T08:46:54.037Z