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Why the real time formalism doesn't factorise

A. C. Pearson
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Abstract

We show that in the real time formalism, the generating functional for thermal Green functions does not factorise. However for most calculations, the normal real time Feynman rules can still be used to give correct results.

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A. C. Pearson. 1993-11-04. Why the real time formalism doesn't factorise. https://arxiv.org/abs/hep-ph/9311224

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