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Aspectos da eletrodinâmica quântica em dimensões espaciais extras
(Universidade Federal de Santa Maria, 2013-03-04)
An explicit evaluation of the pentadimensional Quantum Eletrodynamics (QED5) vacuum polarization tensor is presented. The calculations are made preserving all the intrinsic arbitrariness involved in such type of problem. ...
Aspectos dimensionais da massa do fóton na eletrodinâmica quântica
(Universidade Federal de Santa Maria, 2014-12-10)
The gauge invariance of Quantum Electrodynamics establishes a non massive character for the photon field. Nevertheless, corrections at one loop level for the self-energy of the photon can induce mass generation in some ...