Vacuum Polarization Effects in the Lorentz and PCT Violating Electrodynamics

Details Vacuum Polarization Effects in the Lorentz and PCT Violating Electrodynamics Vacuum Polarization Effects in the Lorentz and PCT Violating Electrodynamics

2005-10-05

arxiv.org/abs/hep-th/0510045v1

Int.J.Theor.Phys.47:1764-1775,2008

Physics

High Energy Physics

High Energy Physics - Theory

Latex file, 19 pages, no figures, includes PACS numbers

Scientific paper

10.1007/s10773-007-9619-4

In this work we report new results concerning the question of dynamical mass generation in the Lorentz and PCT violating quantum electrodynamics. A one loop calculation for the vacuum polarization tensor is presented. The electron propagator, "dressed" by a Lorentz breaking extra term in the fermion Lagrangian density, is approximated by its first order: this scheme is shown to break gauge invariance. Then we rather consider a full calculation to second order in the Lorentz breaking parameter: we recover gauge invariance and use the Schwinger-Dyson equation to discuss the full photon propagator. This allows a discussion on a possible photon mass shift as well as measurable, observable physical consequences, such as the Lamb-shift.

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