Quantum theory as a universal physical theory

@article{Deutsch1985QuantumTA,
  title={Quantum theory as a universal physical theory},
  author={David Deutsch},
  journal={International Journal of Theoretical Physics},
  year={1985},
  volume={24},
  pages={1-41}
}
  • D. Deutsch
  • Published 1985
  • Physics
  • International Journal of Theoretical Physics
The problem of setting up quantum theory as a universal physical theory is investigated. It is shown that the existing formalism, in either the conventional or the Everett interpretation, must be supplemented by an additional structure, the “interpretation basis.” This is a preferred ordered orthonormal basis in the space of states. Quantum measurement theory is developed as a tool for determining the interpretation basis. The augmented quantum theory is discussed. 

Unitary quantum theories are incompatible with special relativity

It is shown that the combination of a unitary quantum theory and special relativity may lead to a contradiction when considering the statistics of certain measurement results in different Lorentz

Unitary quantum theory is incompatible with special relativity

It is shown that the combination of unitary quantum theory and special relativity may lead to a contradiction when considering the EPR correlations in different inertial frames in a

Preferred basis in the many-worlds interpretation of quantum mechanics and quantum cosmology

The authors revive an old proposal of Zeh (1986) for the preferred basis in the many-worlds interpretation of quantum mechanics. The algorithm for this basis reduces to the eigenvalue problems for

Locality in the Everett Interpretation of Quantum Field Theory

Recently it has been shown that transformations of Heisenberg-picture operators are the causal mechanism which allows Bell-theorem-violating correlations at a distance to coexist with locality in the

Quantum Prediction Algorithms

The consistent histories formulation of the quantum theory of a closed system with pure initial state defines an infinite number of incompatible consistent sets, each of which gives a possible

2 00 2 Locality in the Everett Interpretation of Quantum Field Theory

Recently it has been shown that transformations of Heisenberg-picture operators are the causal mechanism which allows Bell-theorem-violating correlations at a distance to coexist with locality in the

An Introduction to Many Worlds in Quantum Computation

It is found that using this particular many-worlds theory as a physical foundation for quantum computation gives several distinct advantages over other interpretations, and over not interpreting quantum theory at all.

Preferred basis, decoherence and a quantum state of the Universe

We review a number of issues in foundations of quantum theory and quantum cosmology including, in particular, the problem of the preferred basis in the many-worlds interpretation of quantum

A Brief Overview of the Leading Interpretations of Quantum Mechanics

This article attempts to present brief outlines of the leading interpretations of quantum mechanics. Many-worlds, relational, von Neumann–Wigner, Copenhagen and hidden variable are examined.
...

References

SHOWING 1-10 OF 40 REFERENCES

"Relative State" Formulation of Quantum Mechanics

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

Conceptual Foundations Of Quantum Mechanics

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

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

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.

Decaying states in the rigged Hilbert space formulation of quantum mechanics

Within the rigged Hilbert space formulation of quantum mechanics idealized resonances (without background) are described by generalized eigenvectors of an essentially self‐adjoint Hamiltonian with

Quantum mechanics and reality

Despite its enormous practical success, quantum theory is so contrary to intuition that, even after 45 years, the experts themselves still do not all agree what to make of it. The area of

The Macroscopic Level of Quantum Mechanics

The problem of relating the quantum mechanical description of atomic processes to the behaviour of matter in bulk is resolved in a conceptually simple treatment.

On the Einstein-Podolsky-Rosen paradox

THE paradox of Einstein, Podolsky and Rosen [1] was advanced as an argument that quantum mechanics could not be a complete theory but should be supplemented by additional variables. These additional

Lyapounov variable: Entropy and measurement in quantum mechanics.

It is found that no dynamical variable with the characteristic properties of nonequilibrium entropy can be defined in the standard formulation of quantum mechanics, and the question of existence of entropy of superoperators M is closely linked to the problem of defining an operator of time in quantum mechanics.

Grundlagen der Quantenmechanik

THIS brief but excellent introduction to quantum mechanics is likely to appeal much more to the mathematician than to the experimental physicist, for, as its title suggests, it deals rather with the

Physics Today.

Using a combination of x-ray diffraction and electron diffraction, the scientists produced a three-dimensional map of the hybridized "orbital hole" bonding copper with neighboring oxygen atoms in cuprite (Cu2O).