5 papers
The Role of Mass and External Field on the Fermionic Casimir Effect
J. L. Tomazelli, L. C. Costa
The aim of this work is to investigate the role played by the fermion mass and that of an external field on the fermionic Casimir energy density under S^1 X R^3 topology. Both twis…
The Euler-Kockel-Heisenberg Lagrangian at Finite Temperature
J. L. Tomazelli, L. C. Costa
In the present work we investigate temperature effects on the spinor and scalar effetive QED in the context of Thermo Field Dynamics. Following Weisskopf's zero-point energy method…
Vacuum Polarization Effects from Fermion Zero-Point Energy
J. L. Tomazelli
The influence of an external electromagnetic field on the vacuum structure of a quantized Dirac field is investigated by considering the quantum corrections to classical Maxwell's…
Induced Lorentz and PCT Symmetry Breaking in an External Electromagnetic Field
M. B. Hott, J. L. Tomazelli
In this work we derive the Lorentz-PCT-violating effective action for a fermion in a constant and uniform electromagnetic field using the Fock-Schwinger proper time method and extr…
Causal Propagators for the Second Order Wilson Loop
B. M. Pimentel, J. L. Tomazelli
We evaluate the Wilson loop at second order in general non-covariant gauges by means of the causal principal-value prescription for the gauge- dependent poles in the gauge-boson pr…