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Nature abhors redundancies: A no-go result for density matrix realism

Gao, Shan (2022) Nature abhors redundancies: A no-go result for density matrix realism. [Preprint]

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Abstract

Quantum mechanics with a fundamental density matrix (W-QM) has been proposed and discussed recently. It motivates a new view called density matrix realism, according to which the ontic state of the universe is represented not by a wave function in quantum mechanics (QM), but by a density matrix in this theory, which may be a mixed state. In this paper, I argue that this view is inconsistent with the empirical equivalence between W-QM and QM.


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Item Type: Preprint
Creators:
CreatorsEmailORCID
Gao, Shansgao7319@uni.sydney.edu.au
Keywords: Quantum mechanics; mixed state; fundamental density matrix; density matrix realism; empirical equivalence; quantum state of the universe
Subjects: Specific Sciences > Physics > Cosmology
Specific Sciences > Physics > Quantum Mechanics
Specific Sciences > Physics > Statistical Mechanics/Thermodynamics
Depositing User: Prof. Shan Gao
Date Deposited: 28 May 2022 14:55
Last Modified: 28 May 2022 14:55
Item ID: 20671
Subjects: Specific Sciences > Physics > Cosmology
Specific Sciences > Physics > Quantum Mechanics
Specific Sciences > Physics > Statistical Mechanics/Thermodynamics
Date: 25 May 2022
URI: https://philsci-archive-dev.library.pitt.edu/id/eprint/20671

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