2005/10/05 by G. Bonneau, L. C. Costa, L. Costa +2 · 8 citations
Physics and Astronomy · #Black Holes and Theoretical Physics #CPT symmetry #Cosmology and Gravitation Theories #Electron #Gauge theory #Lamb shift #Lorentz covariance #Lorentz transformation #Noncommutative and Quantum Gravity Theories #Photon #Physics #Propagator #QED vacuum #Quantum electrodynamics #Quantum mechanics #Tensor (intrinsic definition) #Vacuum energy #Vacuum polarization #hep-ph #hep-th
paper · pdf · doi:10.1007/s10773-007-9619-4
published in International Journal of Theoretical Physics 47(6), 1764-1775 (Springer Science+Business Media) · Latex file, 19 pages, no figures, includes PACS numbers
arxiv created 2005/10/05 · openalex publication_date 2007/12/06 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
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.