Search for combinations of thermal n-point functions with analytic extensions
Journal Article
·
· Physical Review. D, Particles Fields
- Department of Physics, West Virginia University, Morgantown West Virginia 26506-6315 (United States)
The 2{sup n} different n-point functions that occur in real-time thermal field theory are Fourier transformed to real energies. Because of branch cuts in various energy variables, none of these functions can be extended analytically to complex energies. The known linear combinations that form the fully retarded and advanced functions can be extended analytically. It is proven that no other linear combinations have an analytic extension to complex energies.
- OSTI ID:
- 20705971
- Journal Information:
- Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 3 Vol. 71; ISSN PRVDAQ; ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
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