Journal ArticleDOI
Three Measurement Problems
TLDR
In this article, the authors distinguish and analyze several difficulties confronting attempts to reconcile the fundamental quantum mechanical dynamics with Born's rule, and show that many of the proposed accounts of measurement fail at least one of the problems.Abstract:
The aim of this essay is to distinguish and analyze several difficulties confronting attempts to reconcile the fundamental quantum mechanical dynamics with Born's rule. It is shown that many of the proposed accounts of measurement fail at least one of the problems. In particular, only collapse theories and hidden variables theories have a chance of succeeding, and, of the latter, the modal interpretations fail. Any real solution demands new physics.read more
Citations
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"relative State" Formulation of Quantum Mechanics
TL;DR: In this paper, the authors present a reformulation of quantum theory in a form believed suitable for application to general relativity, from which the conventional interpretation of quantum mechanics can be deduced.
Journal ArticleDOI
Entanglement in a fermion chain under continuous monitoring
TL;DR: In this article, the authors studied the entanglement entropy of the quantum trajectories of a free fermion chain under continuous monitoring of local occupation numbers, and proposed a simple theory for entropy evolution from disentangled and highly excited initial states based on generalized hydrodynamics and the quasi-particle pair approach.
Journal ArticleDOI
Dark Energy from Violation of Energy Conservation.
TL;DR: This Letter investigates two potential sources of energy nonconservation-nonunitary modifications of quantum mechanics and phenomenological models motivated by quantum gravity theories with spacetime discreteness at the Planck scale-and shows that such locally negligible phenomena can nevertheless become relevant at the cosmological scale.
Primitive Ontology and the Structure of Fundamental Physical Theories
TL;DR: In this article, the authors present and discuss one proposal of the latter kind that focuses on the notion of primitive ontology, and discuss several quantum theories that can be interpreted in a realist fashion, among which Bohmian mechanics, the Ghirardi-Rimini-Weber (GRW) theory, and the many-worlds theory.
Book ChapterDOI
On the Quantum Measurement Problem
Časlav Brukner,Časlav Brukner +1 more
TL;DR: In this article, Deutsch's version of the Wigner's friend gedanken experiment, where the friend reveals whether she observes a definite outcome without revealing which outcome she observes, is analyzed within quantum theory.
References
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Journal ArticleDOI
Simulating physics with computers
TL;DR: In this paper, the authors describe the possibility of simulating physics in the classical approximation, a thing which is usually described by local differential equations, and the possibility that there is to be an exact simulation, that the computer will do exactly the same as nature.
Book
Mathematical Foundations of Quantum Mechanics
TL;DR: The Mathematical Foundations of Quantum Mechanics as discussed by the authors is a seminal work in theoretical physics that introduced the theory of Hermitean operators and Hilbert spaces and provided a mathematical framework for quantum mechanics.
Mathematical Foundations of Quantum Mechanics
TL;DR: The Mathematical Foundations of Quantum Mechanics as discussed by the authors is a seminal work in theoretical physics that introduced the theory of Hermitean operators and Hilbert spaces and provided a mathematical framework for quantum mechanics.
Journal ArticleDOI
Speakable and Unspeakable in Quatum Mechanics
J. S. Bell,N. David Mermin +1 more
TL;DR: Koestler's book The Sleepwalkers as discussed by the authors is an account of the Copernican revolution, with Copernicus, Kepler, and Galilei as heroes, and he concluded that they were not really aware of what they were doing.
Journal ArticleDOI
"Relative State" Formulation of Quantum Mechanics
TL;DR: In this article, the authors present a reformulation of quantum theory in a form believed suitable for application to general relativity, from which the conventional interpretation of quantum mechanics can be deduced.