8 papers · 1 filter
Effective action in DSR1 quantum field theory
M V Cougo-Pinto, C Farina, F S S Rosa +1
We present the one-loop effective action of a quantum scalar field with DSR1 space-time symmetry as a sum over field modes. The effective action has real and imaginary parts and ma…
The creation of kappa deformed electromagnetic radiation from a sum of zero modes
M. V. Cougo-Pinto, J. F. M. Mendes, C. Farina
In a related paper we have obtained that the effective action for a kappa-deformed quantum field theory has a real and an imaginary part. The real part is half the sum of the kappa…
The relation between effective action and vacuum energy in a kappa-deformed theory
M. V. Cougo-Pinto, J. F. M. Mendes, C. Farina
In a quantum field with spacetime invariance governed by the Poincare algebra the one-loop effective action is equal to the sum of zero modes frequencies, which is the vacuum energ…
Vacuum confinement at finite temperature for scalar QED in magnetic field and deformed boundary condition
M. V. Cougo-Pinto, C. Farina, J. F. M. Mendes +1
We investigate the Casimir effect at finite temperature for a charged scalar field in the presence of an external uniform and constant magnetic field, perpendicular to the Casimir…
Magnetic properties of confined bosonic vacuum at finite temperature
M. V. Cougo-Pinto, C. Farina, M. R. Negrao
We compute the combined effect of confinement, an external magnetic field and temperature on the vacuum of the charged scalar field using Schwinger's formula for the effective acti…
Casimir effect at finite temperature of charged scalar field
M. V. Cougo-Pinto, C. Farina, M. R. Negrao +1
The Casimir effect for Dirac as well as for scalar charged particles is influenced by external magnetic fields. It is also influenced by finite temperature. Here we consider the Ca…