Resummation in hot field theories

Details Resummation in hot field theories Resummation in hot field theories

2003-02-14

arxiv.org/abs/hep-ph/0302115v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

5 pages, 3 figures, contribution to the conference Strong and Electroweak Matter (SEWM2002), Heidelberg, Germany, October 2-5,

Scientific paper

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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