Leontovich relations in thermal field theory

  • M.H. Thoma
Theoretical physic


The application of generalized Kramers-Kronig relations, the so-called Leontovich relations, to thermal field theory is discussed. Medium effects contained in the full, thermal propagators can easily be taken into account by this method. As examples the collisional energy loss of a charged particle in a relativistic plasma and the radiation of energetic photons from a quark-gluon plasma are considered. Within the leading logarithmic approximation the results based on the hard thermal loop resummation technique are reproduced easily. However, the method presented here is more general and provides exact expressions, which allow in principle non-perturbative calculations.


Field Theory Energy Loss Charged Particle Medium Effect Exact Expression 
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Copyright information

© Springer-Verlag Berlin Heidelberg 2000

Authors and Affiliations

  • M.H. Thoma
    • 1
  1. 1.Theory Division, CERN, 1211 Geneva 23, Switzerland CH

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