Abstract
The theorem by Gell-Mann and Low is a cornerstone in quantum field theory and zero-temperature many-body theory. The standard proof is based on Dyson's time-ordered expansion of the propagator; a proof based on exact identities for the time propagator is here given. © 2007 American Institute of Physics.
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CITATION STYLE
APA
Molinari, L. G. (2007). Another proof of Gell-Mann and Low’s theorem. Journal of Mathematical Physics, 48(5). https://doi.org/10.1063/1.2740469
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