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An Introduction to Noncommutative Physics

open access: yesPhysics, 2023
Noncommutativity in physics has a long history, tracing back to classical mechanics. In recent years, many new developments in theoretical physics, and in practical applications rely on different techniques of noncommutative algebras.
Shi-Dong Liang, Matthew J. Lake
doaj   +1 more source

Causality, symmetries and quantum mechanics [PDF]

open access: yesFoundations of Physics Letters, 2002
It is argued that there is no evidence for causality as a metaphysical relation in quantum phenomena. The assumption that there are no causal laws, but only probabilities for physical processes constrained by symmetries, leads naturally to quantum mechanics.
openaire   +2 more sources

Gibbsing spacetime: a group field theory approach to equilibrium in quantum gravity

open access: yesNew Journal of Physics, 2018
The symmetries, subtle nature of observables, and lack of a preferred notion of time evolution all make defining a quantum statistical mechanics of general relativity difficult.
Hal M Haggard
doaj   +1 more source

Simple applications of Noether's first theorem in quantum mechanics and electromagnetism [PDF]

open access: yes, 2003
Internal global symmetries exist for the free non-relativistic Schrodinger particle, whose associated Noether charges---the space integrals of the wavefunction and the wavefunction multiplied by the spatial coordinate---are exhibited.
Holland, Peter   +3 more
core   +1 more source

Properties and Dispositions: some Metaphysical Remarks on Quantum Ontology [PDF]

open access: yes, 2006
After some suggestions about how to clarify the confused metaphysical distinctions between dispositional and non-dispositional or categorical properties, I review some of the main interpretations of QM in order to show that – with the relevant exception ...
Mauro Dorato, Dorato, Mauro
core   +1 more source

Special Issue: “Symmetries in Quantum Mechanics” [PDF]

open access: yesSymmetry, 2021
This Special Issue “Symmetries in Quantum Mechanics” describes research using two of the most fundamental probes we have in nature [...]
openaire   +1 more source

Intimate Connections: Symmetries and Conservation Laws in Quantum versus Classical Mechanics [PDF]

open access: yes, 2017
In this article, I use a number of remarks made by Eugene Wigner to defend the claim that the nature of the connection between symmetries and conservation laws is different in quantum and in classical mechanics.
Pablo Ruiz de Olano   +2 more
core   +1 more source

Aspects of phase-space noncommutative quantum mechanics

open access: yesPhysics Letters B, 2015
In this work some issues in the context of Noncommutative Quantum Mechanics (NCQM) are addressed. The main focus is on finding whether symmetries present in Quantum Mechanics still hold in the phase-space noncommutative version. In particular, the issues
O. Bertolami, P. Leal
doaj   +1 more source

Discerning "indistinguishable" quantum systems [PDF]

open access: yes, 2012
In a series of recent papers, Simon Saunders, Fred Muller and Michael Seevinck have collectively argued, against the folklore, that some non-trivial version of Leibniz's principle of the identity of indiscernibles is upheld in quantum mechanics.
Caulton, Adam
core   +1 more source

Quantum Information in Geometric Quantum Mechanics [PDF]

open access: yes, 2011
A fundamental starting point in quantum information theory is the consideration of the von Neumann entropy and its generalization to relative quantum entropies.
Volkert, Georg Friedrich
core   +1 more source

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