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Gleason-Type Theorems from Cauchy’s Functional Equation
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20190527GleasonalaCauchy(resubmissionFooP)
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| Journal | Foundations of Physics |
|---|---|
| Date | Accepted/In press - 29 May 2019 |
| Date | E-pub ahead of print (current) - 4 Jun 2019 |
| Number of pages | 13 |
| Early online date | 4/06/19 |
| Original language | English |
Abstract
Gleason-type theorems derive the density operator and the Born rule formalism of quantum theory from the measurement postulate, by considering additive functions which assign probabilities to measurement
outcomes. Additivity is also the defining property of solutions to Cauchy’s functional equation. This observation suggests an alternative proof of the strongest known Gleason-type theorem, based on techniques used to solve functional equations.
outcomes. Additivity is also the defining property of solutions to Cauchy’s functional equation. This observation suggests an alternative proof of the strongest known Gleason-type theorem, based on techniques used to solve functional equations.
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© The Author(s) 2019
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