The equations of motion for a classical color particle in background non-Abelian bosonic and fermionic fields

Based on the most general principles of reality, gauge and reparametrization invariance, a problem of constructing the action describing dynamics of a classical color-charged particle interacting with background non-Abelian gauge and fermion fields is considered. The cases of the linear and quadrati...

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Veröffentlicht in:arXiv.org 2010-08
Hauptverfasser: Markov, Yuri A, Markova, Margaret A, Shishmarev, Alexey A
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description Based on the most general principles of reality, gauge and reparametrization invariance, a problem of constructing the action describing dynamics of a classical color-charged particle interacting with background non-Abelian gauge and fermion fields is considered. The cases of the linear and quadratic dependence of a Lagrangian on a background fermion field are discussed. It is shown that in both cases in general there exists an infinite number of interaction terms, which should be included in the Lagrangian in question. From a simple iteration scheme, examples of the construction of the first few gauge-covariant currents and sources induced by a moving particle with non-Abelian charge are given. It is shown that these quantities, by a suitable choice of parameters, exactly reproduce additional currents and sources previously obtained in [Yu.A. Markov, M.A. Markova, Nucl. Phys. A 784 (2007) 443] on the basis of heuristic considerations.
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subjects Charged particles
Color
Dependence
Equations of motion
Fermions
Markov processes
Physics - High Energy Physics - Phenomenology
Physics - High Energy Physics - Theory
title The equations of motion for a classical color particle in background non-Abelian bosonic and fermionic fields
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