Hamburg 2016 – scientific programme

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MP: Fachverband Theoretische und Mathematische Grundlagen der Physik

MP 7: Statistischer Zugang zur Quantentheorie

MP 7.3: Talk

Thursday, March 3, 2016, 09:10–09:30, VMP6 HS B

Spikes and what they point out in the FRG flow equation — •Tobias Hellwig, Andreas Wipf, and Omar Zanusso — Theoretisch-Physikalisches Institut, Friedrich-Schiller-Universität Jena, Max-Wien-Platz 1, 07743 Jena, Germany

After a short introduction into the exact flow equation for the functional renormalization group (FRG) I will use spike plots to obtain the fixed point solutions of the exact flow equation within a local potential approximation. The technique will be applied to a two dimensional scalar field theory with Z₂ symmetry and a two dimensional Wess-Zumino model giving the corresponding minimal (super-)conformal models. After obtaining the fixed point solutions the critical exponents are derived using the Slac-derivative for the linearized deformations.

This talk is based on the paper arXiv:1508.02547 .