# Relational quantum mechanics

@article{Rovelli1996RelationalQM, title={Relational quantum mechanics}, author={Carlo Rovelli}, journal={International Journal of Theoretical Physics}, year={1996}, volume={35}, pages={1637-1678} }

I suggest that the common unease with taking quantum mechanics as a fundamental description of nature (the “measurement problem”) could derive from the use of an incorrect notion, as the unease with the Lorentz transformations before Einstein derived from the notion of observer-independent time. I suggest that this incorrect notion that generates the unease with quantum mechanics is the notion of “observer-independent state” of a system, or “observer-independent values of physical quantities…

## 830 Citations

Modal Interpretations of Quantum Mechanics and Relativity: A Reconsideration

- Physics
- 2005

Two of the main interpretative problems in quantum mechanics are the so-called measurement problem and the question of the compatibility of quantum mechanics with relativity theory. Modal…

Quantum Mechanics as Quantum Information

- Physics, Philosophy
- 2007

This thesis analyzes the epistemological implications and the role of basic concepts like information, physical law and matter in characterizing the physical reality. The
key point will be a quantum…

Randomness in Relational Quantum Mechanics (revised)

- PhysicsAcademia Letters
- 2021

There has been a lot of confusion over the years on the nature of the randomness exhibited in quantum mechanical phenomena. The relational interpretation of quantum mechanics (RQM) introduced by…

Can We Make Sense of Relational Quantum Mechanics?

- Philosophy
- 2018

It is claimed that there is currently no adapted locality criterion to evaluate whether the resulting interpretation is local or not, and one of its central claims concerning the possibility for an observer to have knowledge about other observer’s events is clarified.

Towards a Constructive Foundation of Quantum Mechanics

- Physics
- 2017

I describe a constructive foundation for quantum mechanics, based on the discreteness of the degrees of freedom of quantum objects and on the Principle of Relativity. Taking Einstein’s historical…

Weakening the Born Rule - Towards a Stateless Formulation of Quantum Mechanics

- Physics, Philosophy
- 2013

The notion of state vector is, in quantum mechanics, as central as it is problematic, as illustrates the wealth of publications about the sub- jects, including in particular the many attempts to…

Toy Model for a Relational Formulation of Quantum Theory

- Physics
- 2005

This work demonstrates using elementary quantum theory how any quantum mechanical experiment admits a purely relational description at a fundamental, and describes how the original “non-relational” theory approximately emerges from the fully relational theory when reference systems become semi-classical.

Does Quantum Mechanics Need Interpretation?

- Physics2009 Third International Conference on Quantum, Nano and Micro Technologies
- 2009

Since the beginning, quantum mechanics has raised major foundational and interpretative problems. Foundational research has been an important factor in the development of quantum cryptography,…

The real meaning of quantum mechanics

- PhilosophyEducational Philosophy and Theory
- 2022

I suggest a contextual realist interpretation of Carlo Rovelli’s relational quantum mechanics. The principal point is a correct understanding of the concept of reality and taking into account the…

Histories Without Collapse

- PhysicsInternational Journal of Theoretical Physics
- 2022

A simple model based on Wigner's friend is examined, in which Bell's model and the projection postulate give different probabilities for the histories of a sentient system, and it is shown that the Born rule gives the same result as applying projection in the course of the history, because of entanglement with the memory.

## References

SHOWING 1-10 OF 86 REFERENCES

"Relative State" Formulation of Quantum Mechanics

- Physics
- 1957

The task of quantizing general relativity raises serious questions about the meaning of the present formulation and interpretation of quantum mechanics when applied to so fundamental a structure as…

Can Quantum-Mechanical Description of Physical Reality Be Considered Complete?

- Philosophy
- 1935

Consideration of the problem of making predictions concerning a system on the basis of measurements made on another system that had previously interacted with it leads to the result that one is led to conclude that the description of reality as given by a wave function is not complete.

On the consistent histories approach to quantum mechanics

- Philosophy
- 1996

We review the consistent histories formulations of quantum mechanics developed by Griffiths, Omnès, and Gell-Mann and Hartle, and describe the classification of consistent sets. We illustrate some…

Logical reformulation of quantum mechanics. IV. Projectors in semiclassical physics

- Physics
- 1989

This is a technical paper providing the proofs of three useful theorems playing a central role in two kinds of physical applications: an explicit logical and mathematical formulation of the…

Survey of general quantum physics

- Mathematics
- 1972

The abstract description of a physical system is developed, along lines originally suggested by Birkhoff and von Neumann, in terms of the complete lattice of propositions associated with that system,…

Consistent histories and the interpretation of quantum mechanics

- Physics
- 1984

The usual formula for transition probabilities in nonrelativistic quantum mechanics is generalized to yield conditional probabilities for selected sequences of events at several different times,…

Conceptual Foundations Of Quantum Mechanics

- Physics, Education
- 1971

A detailed view of the conceptual foundations and problems of quantum physics by a highly regarded French theoretical physicist.. Conceptual Foundations of Quantum Mechanics provides a detailed view…

Environment-induced superselection rules

- Physics
- 1982

We show how the correlations of a quantum system with other quantum systems may cause one of its observables to behave in a classical manner. In particular, "reduction of the wave packet," postulated…

A SUGGESTED INTERPRETATION OF THE QUANTUM THEORY IN TERMS OF "HIDDEN" VARIABLES. II

- Physics
- 1952

In this paper, we shall show how the theory of measurements is to be understood from the point of view of a physical interpretation of the quantum theory in terms of hidden variables developed in a…

Quantum Mechanics: An Empiricist View

- Philosophy
- 1991

Part 1 Determinism and inderterminism in classical perspective: determinism indeterminism and probability. Part 2 How the phenomena demand quantum theory: the empirical basis of quantum theory new…