Title:
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Finite-temperature T matrix in a real-time formalism
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Author:
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Canivell Cretchley, Víctor; Garrido Beltrán, Lluís; San Miguel Ruibal, Maximino; Seglar, P. (Pedro)
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Other authors:
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Universitat de Barcelona |
Abstract:
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A generalized off-shell unitarity relation for the two-body scattering T matrix in a many-body medium at finite temperature is derived, through a consistent real-time perturbation expansion by means of Feynman diagrams. We comment on perturbation schemes at finite temperature in connection with an erroneous formulation of the Dyson equation in a paper recently published. |
Subject(s):
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-Teoria quàntica -Quantum kinetics |
Rights:
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(c) The American Physical Society, 1978
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Document type:
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Article Article - Published version |
Published by:
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The American Physical Society
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