DOI 10.1007/s100529800982
Axion decay in a constant electromagnetic background field
and
at finite temperature using world-line methods
M. Haack1 - M.G. Schmidt2
1 Institut für Theoretische Physik, Martin-Luther-Universität
Halle-Wittenberg, Selkestr. 9, D-06099 Halle, Germany
(e-mail: michael@hera2.physik.uni-halle.de)
2 Institut für Theoretische Physik, Universität Heidelberg,
Philosophenweg 16, D-69120 Heidelberg, Germany
(e-mail: M.G.Schmidt@thphys.uni-heidelberg.de)
Received: 18 June 1998 / Published online: 19 October 1998
Abstract
We investigate the radiative decay of the axion into two photons in an
external electromagnetic field to one loop order. Our approach is
based on the world-line formalism, which is very suitable to take into
account the external field to all orders. Afterwards we discuss how the calculation could be generalized to finite temperature.
Copyright Springer-Verlag
