Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2001-10-15
Physics
High Energy Physics
High Energy Physics - Theory
07 pages
Scientific paper
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 plates. We have used a boundary condition characterized by a deformation parameter $\theta$; for $\theta=0$ we have a periodic condition and for $\theta=\pi$, an antiperiodic one, for intermediate values, we have a deformation. The temperature was introduced using the imaginary time formalism and both the lagrangian and free energy were obtained from Schwinger proper time method for computing the effective action. We also computed the permeability and its asymptotic expressions for low and high temperatures.
Cougo-Pinto M. V.
Farina Carlos
Mendes J. F. M.
Tort Alexandre
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