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Title: Thermal four-point functions with analytic extensions

Abstract

The possible analytic extensions of Matsubara thermal n-point functions from discrete, imaginary energies to more general complex energies are investigated. It is known that for n{>=}4 most of the analytic extensions cannot be expressed as linear combinations of the usual 2{sup n} different real-time n-point functions. For the case n=4 the explicit products of real-time field operators are found whose Fourier transforms can be extended analytically to certain domains of complex energy.

Authors:
 [1]
  1. Department of Physics, West Virginia University, Morgantown, West Virginia 26506-6315 (United States)
Publication Date:
OSTI Identifier:
20713883
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. D, Particles Fields; Journal Volume: 72; Journal Issue: 9; Other Information: DOI: 10.1103/PhysRevD.72.096005; (c) 2005 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; CALCULATION METHODS; FIELD OPERATORS; FOURIER TRANSFORMATION; FUNCTIONS; QUANTUM FIELD THEORY

Citation Formats

Weldon, H. Arthur. Thermal four-point functions with analytic extensions. United States: N. p., 2005. Web. doi:10.1103/PhysRevD.72.096005.
Weldon, H. Arthur. Thermal four-point functions with analytic extensions. United States. doi:10.1103/PhysRevD.72.096005.
Weldon, H. Arthur. Tue . "Thermal four-point functions with analytic extensions". United States. doi:10.1103/PhysRevD.72.096005.
@article{osti_20713883,
title = {Thermal four-point functions with analytic extensions},
author = {Weldon, H. Arthur},
abstractNote = {The possible analytic extensions of Matsubara thermal n-point functions from discrete, imaginary energies to more general complex energies are investigated. It is known that for n{>=}4 most of the analytic extensions cannot be expressed as linear combinations of the usual 2{sup n} different real-time n-point functions. For the case n=4 the explicit products of real-time field operators are found whose Fourier transforms can be extended analytically to certain domains of complex energy.},
doi = {10.1103/PhysRevD.72.096005},
journal = {Physical Review. D, Particles Fields},
number = 9,
volume = 72,
place = {United States},
year = {Tue Nov 01 00:00:00 EST 2005},
month = {Tue Nov 01 00:00:00 EST 2005}
}