# The Measurement Postulates of Quantum Mechanics are Redundant

### APA

Masanes, L. (2018). The Measurement Postulates of Quantum Mechanics are Redundant. Perimeter Institute. https://pirsa.org/18050057

### MLA

Masanes, Lluis. The Measurement Postulates of Quantum Mechanics are Redundant. Perimeter Institute, May. 08, 2018, https://pirsa.org/18050057

### BibTex

@misc{ pirsa_PIRSA:18050057, doi = {10.48660/18050057}, url = {https://pirsa.org/18050057}, author = {Masanes, Lluis}, keywords = {Quantum Foundations}, language = {en}, title = {The Measurement Postulates of Quantum Mechanics are Redundant}, publisher = {Perimeter Institute}, year = {2018}, month = {may}, note = {PIRSA:18050057 see, \url{https://pirsa.org}} }

Lluis Masanes University College London

## Abstract

In order to think about the foundations of physics it is important to understand the logical relationships among the physical principles that sustain the building. As part of these axioms of physics there is the core hypothesis that, how the Universe is partitioned into systems and subsystems is a subjective choice of the observer that should not affect the predictions of physics. Other foundational principles are the Postulates of Quantum Mechanics. However, we prove that these are not independent from the “independence of subsystem partitioning” hypothesis described above. In particular, we prove that the mathematical structure of quantum measurements and the formula for assigning outcome probabilities are implied by the mentioned hypothesis and the rest of quantum postulates.