Damping Rate of a Fermion in a Medium

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dc.creatorD'Olivo, J. C.
dc.creatorNieves, Jose F.
dc.date1993-09-03
dc.date1995-05-19
dc.date.accessioned2026-07-07T11:47:41Z
dc.date.available2026-07-07T11:47:41Z
dc.descriptionWe examine the relation between the damping rate of a massless, chiral fermion that propagates in a medium, and the rate $Γ$ of approach to equilibrium. It is proven that these quantities are equal, by showing that they are given by the same formula in terms of the imaginary part of the self-energy evaluated at the energy of the propagating fermion mode. This result is valid provided $Γ$ is defined by using the appropriate wave functions of the mode.
dc.descriptionVersion to appear in Phys. Rev. D
dc.identifierhttps://arxiv.org/abs/hep-ph/9309225
dc.identifierhttp://arxiv.org/abs/hep-ph/9309225
dc.identifierPhys.Rev.D52:2987-2993,1995
dc.identifierdoi:10.1103/PhysRevD.52.2987
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/202660
dc.subjectHigh Energy Physics - Phenomenology
dc.titleDamping Rate of a Fermion in a Medium
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