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Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/9365
Finite-temperature T matrix in a real-time formalism
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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.
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CANIVELL CRETCHLEY, Víctor, et al. Finite-temperature T matrix in a real-time formalism. Physical Review A. 1978. Vol. 17, num. 1, pags. 480-485. ISSN 1050-2947. [consulted: 17 of June of 2026]. Available at: https://hdl.handle.net/2445/9365