Tomazelli, J. L.Costa, L. C.2014-05-202014-05-202003-11-01European Physical Journal C. New York: Springer-verlag, v. 31, n. 2, p. 239-243, 2003.1434-6044http://hdl.handle.net/11449/23790The aim of this paper is to study finite temperature effects in effective quantum electrodynamics using Weisskopf's zero-point energy method in the context of thermo, field dynamics. After a general calculation for a weak magnetic field at fixed T, the asymptotic behavior of the Euler-Kockel-Heisenberg Lagrangian density is investigated focusing on the regularization requirements in the high temperature limit. In scalar QED the same problem is also discussed.239-243engArtigo10.1140/epjc/s2003-01329-7WOS:000187058600010Acesso restrito