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MP: Fachverband Theoretische und Mathematische Grundlagen der Physik

MP 6: Quantum Field Theory

MP 6.1: Vortrag

Mittwoch, 17. März 2010, 08:30–08:55, JUR H

Supersymmetry and the Functional Renormalization Group — Jens Braun, Holger Gies, •Franziska Synatschke, and Andreas Wipf — Theoretisch-Physikalisches Institut, FSU Jena, Deutschland

Dynamical supersymmetry breaking is an important issue for applications of supersymmetry in particle physics. Many approaches to investigate this problem break supersymmetry explicitly and it is hard to distinguish between dynamical and explicit supersymmetry breaking. The functional renormalization group equations allow for a nonperturbative approach that leaves supersymmetry intact. Therefore they offer a promising tool to investigate the dynamical breaking of supersymmetry. In this talk we will employ this method to investigate the N=1 Wess-Zumino model in three dimensions at finite temperature. We will recover many aspects of finite temperature QFT such as dimensional reduction and the the Stefan-Boltzmann law. Also we will discuss supersymmetry breaking through the thermal boundary conditions and the phase diagram for the breaking of the Z₂-symmetry at finite temperatures.