Reference : Approximate spectral functions in thermal field theory
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Physics
http://hdl.handle.net/10993/7763
Approximate spectral functions in thermal field theory
English
Henning, P. A. [Theoretical Physics, Gesellschaft für Schwerionenforschung (GSI)]
Polyatchenko, E. [Theoretical Physics, Gesellschaft für Schwerionenforschung (GSI)]
Schilling, Tanja mailto [Theoretical Physics, Gesellschaft für Schwerionenforschung (GSI)]
Bros, J. [CEA, Service Physique Théorique]
1996
Physical Review. D : Particles and Fields
American Physical Society
54
5239
1-5
Yes
International
0556-2821
College Park
MD
[en] Causality requires that the ~anti!commutator of two interacting field operators vanishes for spacelike coordinate differences. This implies that the Fourier transform of the spectral function of this quantum field should vanish in the spacelike domain. We find that this requirement imposes some constraints on the use of resummed propagators in high temperature gauge theory.
http://hdl.handle.net/10993/7763

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