Construction and Consequences of Coloured Charges in QCD

E Bagan; M Lavelle; D McMullan; B Fiol; N Roy

Construction and Consequences of Coloured Charges in QCD

E Bagan, M Lavelle, D McMullan, B Fiol, N Roy

School of Engineering, Computing and Mathematics

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Abstract

This talk reports on work aimed at improving our understanding of charged states in gauge theories.Emphasis is placed on different ways of implementingthe gauge invariance of physical states. QED perturbative calculations are used to stress that gauge invariance is not enough: only a subset of such states have a direct physical significance. In QCD a non-perturbative obstruction means that quarks and gluons cannot form physical states and as such these particles are not truely observables. This sets a fundamental limit on the constituent quark model.

Original language	English
Number of pages	0
Journal	Published in the proceedings of the workshop on Quantum Chromodynamics: Collisions, Confinement and Chaos, Editors H.M. Fried and B. Mueller, World Scientific 1997
Volume	0
Issue number	0
Publication status	Published - 27 Jun 1997

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hep-ph

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9706521v1

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AU - Bagan, E

AU - Lavelle, M

AU - McMullan, D

AU - Fiol, B

AU - Roy, N

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AB - This talk reports on work aimed at improving our understanding of charged states in gauge theories.Emphasis is placed on different ways of implementingthe gauge invariance of physical states. QED perturbative calculations are used to stress that gauge invariance is not enough: only a subset of such states have a direct physical significance. In QCD a non-perturbative obstruction means that quarks and gluons cannot form physical states and as such these particles are not truely observables. This sets a fundamental limit on the constituent quark model.

KW - hep-ph

M3 - Article

VL - 0

JO - Published in the proceedings of the workshop on Quantum Chromodynamics: Collisions, Confinement and Chaos, Editors H.M. Fried and B. Mueller, World Scientific 1997

JF - Published in the proceedings of the workshop on Quantum Chromodynamics: Collisions, Confinement and Chaos, Editors H.M. Fried and B. Mueller, World Scientific 1997

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Construction and Consequences of Coloured Charges in QCD

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