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Resummation in hot field theories

Urko Reinosa
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Abstract

We consider a scalar theory at finite temperature in the 2PI resummation scheme, including phi^3 and phi^4 interactions. Already at the one loop level in this scheme, we have to deal with a non local approximation. We carry out the renormalization and obtain finite equations for the propagator. Within this model we can explore the effect of non local contributions to the self-energy in the evaluation of thermodynamic quantities.

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Urko Reinosa. 2003-02-14. Resummation in hot field theories. https://doi.org/10.1142/9789812704498_0060

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