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Berlin 2005 – scientific programme

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DY: Dynamik und Statistische Physik

DY 23: Symposium Renormalization and Scaling (SYRS) – Contributed Talks I

DY 23.6: Talk

Saturday, March 5, 2005, 15:15–15:30, TU H3010

RG flow of fermionic particle systems — •Holger Gies — Institut für theoretische Physik, Philosophenweg 16, 69120 Heidelberg

We study the renormalization flow of fermionic systems as part of (chiral) relativistic particle theories. At strong coupling, spontaneous breaking of chiral symmetry can occur, with composite bosonic fluctuations becoming important near the transition scale. We employ functional RG techniques together with a continuous transformation of fermion to bosons fields for a systematic study of symmetry breaking. In particular, we investigate how the interactions with a gauge field can induce chiral symmetry breaking in the fermionic sector.

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