8–14 Mar 2015
Tatranska Lomnica, Slovakia
Europe/Bratislava timezone

Universality of the hard-loop action

10 Mar 2015, 10:30
25m
Tatranska Lomnica, Slovakia

Tatranska Lomnica, Slovakia

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Speaker

Alina Czajka (Jan Kochanowski University)

Description

The effective actions of gauge bosons, fermions and scalars, which are obtained within the hard-loop approximation, are shown to have unique forms for a whole class of gauge theories including QED, scalar QED, super QED, pure Yang-Mills, QCD, super Yang-Mills. The universality occurs irrespective of a field content of each theory and of variety of specific interactions. Consequently, the long-wavelength or semiclassical features of plasma systems governed by these theories such as collective excitations are almost identical. An origin of the universality, which holds within the limits of applicability of the hard-loop approach, is discussed.

Primary author

Alina Czajka (Jan Kochanowski University)

Presentation materials