# Quantum Knowledge, Quantum Belief, Quantum Reality: Notes of a QBist Fellow Traveler

@article{Barnum2010QuantumKQ, title={Quantum Knowledge, Quantum Belief, Quantum Reality: Notes of a QBist Fellow Traveler}, author={Howard Barnum}, journal={arXiv: Quantum Physics}, year={2010} }

I consider the "Quantum Bayesian" view of quantum theory as expounded in a 2006 paper of Caves, Fuchs, and Schack. I argue that one can accept a generally personalist, decision-theoretic view of probability, including probability as manifested in quantum physics, while nevertheless accepting that in some situations, including some in quantum physics, probabilities may in a useful sense be thought of as objectively correct. This includes situations in which the ascription of a quantum state…

## 5 Citations

### QBism, the Perimeter of Quantum Bayesianism

- Physics
- 2010

This article summarizes the Quantum Bayesian point of view of quantum mechanics, with special emphasis on the view's outer edges---dubbed QBism. QBism has its roots in personalist Bayesian…

### QBism: Quantum Theory as a Hero's Handbook

- Physics
- 2016

This paper represents an elaboration of the lectures delivered by one of us (CAF) during "Course 197 -- Foundations of Quantum Physics" at the International School of Physics "Enrico Fermi" in…

### Von Neumann was not a Quantum Bayesian

- PhilosophyPhilosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences
- 2016

This essay explores how such a claim that John von Neumann was the ‘first quantum Bayesian’ is, historically speaking, unsupported.

### The classical limit of a physical theory and the dimensionality of space

- Physics
- 2013

It is shown that as long as the interaction is pairwise, this is impossible, and quantum mechanics and the three-dimensional space remain the only solution, however, having multi-particle interactions and a generalized notion of “classical field” may open up such a possibility.

## References

SHOWING 1-6 OF 6 REFERENCES

### Teleportation in General Probabilistic Theories

- Mathematics
- 2012

In a previous paper, we showed that many important quantum information-theoretic phenomena, including the no-cloning and no-broadcasting theorems, are in fact generic in all non-classical…

### Cloning and Broadcasting in Generic Probabilistic Theories

- Economics
- 2006

We prove generic versions of the no-cloning and no-broadcasting theorems, applicable to essentially {\em any} non-classical finite-dimensional probabilistic model that satisfies a no-signaling…

### The operational approach to algebraic quantum theory I

- Mathematics
- 1970

Recent work of Davies and Lewis has suggested a mathematical framework in which the notion of repeated measurements on statistical physical systems can be examined. This paper is concerned with an…

### Probability and the Art of Judgment

- Economics
- 1992

Preface 1. Introduction: radical probabilism 2. Valuation an dacceptance of scientific hypotheses 3. Probable knowledge 4. Probability and the art of judgment 5. Bayesianism with a human face 6.…

### The two dogmas of empiricism

- Philosophy
- 1951

Modern empiricism has been conditioned in large part by two dogmas. One is a belief in some fundamental cleavage between truths which are analytic, or grounded in meanings independently of matters of…