Regular Article - Theoretical Physics
Hard thermal loops in static background fields
Instituto de Física, Universidade de São Paulo, São Paulo, SP, 05315-970, Brazil
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Revised: 17 September 2013
Published online: 23 October 2013
We discuss the high-temperature behavior of retarded thermal loops in static external fields. We employ an analytic continuation of the imaginary-time formalism and use a spectral representation of the thermal amplitudes. We show that, to all orders, the leading contributions of static hard thermal loops can be directly obtained by evaluating them at zero external energies and momenta.
© Springer-Verlag Berlin Heidelberg and Società Italiana di Fisica, 2013