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Frequentist-approach inspired theory of quantum random phenomena predicts signaling

Quantum Physics 2020-10-13 v2

Abstract

Different ensembles of the same density matrix are indistinguishable within the modern Kolmogorov probability measure theory of quantum random phenomena. We find that changing the framework from the Kolmogorov one to a frequentist-inspired theory of quantum random phenomena -- a la von Mises -- would lift the indistinguishability, and potentially cost us the no-signaling principle (i.e., lead to superluminal communication). We believe that this adds to the recent works on the search for a suitable representation of the state of a quantum system. While erstwhile arguments for potential modifications in the representation of the quantum state were restricted to possible variations in the formalism of the quantum theory, we indicate a possible fallout of altering the underlying theory of random processes.

Keywords

Cite

@article{arxiv.1903.12096,
  title  = {Frequentist-approach inspired theory of quantum random phenomena predicts signaling},
  author = {C. S. Sudheer Kumar and Anup Biswas and Aditi Sen De and Ujjwal Sen},
  journal= {arXiv preprint arXiv:1903.12096},
  year   = {2020}
}

Comments

v2: 11 pages, 1 figure, presentation bettered