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We consider the quantum field theoretical description of quantum many-body systems. In fermionic gases at low densities, and in specific materials of solid-state physics, the Fermi surface becomes small or even degenerates to a point. A multiscale analysis can be used to determine the correlation functions by convergent expansions. In the talk I will discuss models for double-layer graphene and the dilute Fermi gas, and explain the main ideas in the analysis.

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Manfred Salmhofer, Universität Heidelberg
Seminarraum Theoretische Physik
Contact: not specified