In-medium Yang-Mills equations: a derivation and canonical quantization

Details In-medium Yang-Mills equations: a derivation and canonical quantization In-medium Yang-Mills equations: a derivation and canonical quantization

2003-03-17

arxiv.org/abs/hep-ph/0303141v3

J.Phys.G30:425-446,2004

Physics

High Energy Physics

High Energy Physics - Phenomenology

27 pages, references added, version extended with emphasis on non-Abelian gauge group impact on medium characteristics. To app

Scientific paper

10.1088/0954-3899/30/4/004

The equations for Yang-Mills field in a medium are derived in a linear approximation with respect to the gauge coupling parameter and the external field. The obtained equations closely resemble the macroscopic Maxwell equations. A canonical quantization is performed for a family of Fermi-like gauges in the case of constant and diagonal (in the group indices) tensors of electric permittivity and magnetic permeability. The physical subspace is defined and the gauge field propagator is evaluated for a particular choice of the gauge. The propagator is applied for evaluation of the cross-section of ellastic quark scattering in the Born approximation. Possible applications to Cherenkov-type gluon radiation are commented briefly.

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