Preconjugate variables in quantum field theory and their applications

Preconjugate variables X have commutation relations with the energy-momentum P of the respective system which are of a more general form than just the Hamiltonian one. Since they have been proven useful in their own right for finding new spacetimes, we present a study of them here. Interesting examp...

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Published in:Physical review. D 2016-09, Vol.94 (6), Article 065007
Main Authors: Much, Albert, Pottel, Steffen, Sibold, Klaus
Format: Article
Language:English
Subjects:
Commutation
Conformal mapping
Field theory
Group theory
Minkowski space
Quantum field theory
Quantum theory
Spacetime
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Sibold, Klaus
description Preconjugate variables X have commutation relations with the energy-momentum P of the respective system which are of a more general form than just the Hamiltonian one. Since they have been proven useful in their own right for finding new spacetimes, we present a study of them here. Interesting examples X can be found via geometry-motions on the mass shell for massive and massless systems-and via group theory-invariance under special conformal transformations of the mass shell and light cone, respectively. Both find representations on Fock space. We work mainly in ordinary four-dimensional Minkowski space and spin zero. The limit process from nonzero to vanishing mass turns out to be nontrivial and leads naturally to wedge variables. We point out some applications and extensions to more general spacetimes. In a companion paper, we discuss the transition to conjugate pairs.
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source American Physical Society:Jisc Collections:APS Read and Publish 2023-2025 (reading list)
subjects Commutation
Conformal mapping
Field theory
Group theory
Minkowski space
Quantum field theory
Quantum theory
Spacetime
title Preconjugate variables in quantum field theory and their applications
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