Three-point function at finite temperature in the real-time formalism
- 9 September 1991
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 67 (11) , 1384-1387
- https://doi.org/10.1103/physrevlett.67.1384
Abstract
One-particle-irreducible amputated graphs differ qualitatively at finite temperature when calculated in the imaginary-time and real-time formalisms. Here we show within the real-time formalism for the three-point function that when external propagators are attached certain amputated functions can be inferred which have a close relation to those of the imaginary-time formalism.Keywords
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