Berlin 2018 – scientific programme
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TT: Fachverband Tiefe Temperaturen
TT 91: Correlated Electrons: Method Development
TT 91.4: Talk
Thursday, March 15, 2018, 15:45–16:00, H 0104
Truncated unity functional renormalization group for multiband systems with spin-orbit coupling — •Giulio Schober1, Jannis Ehrlich1,2, Timo Reckling1, and Carsten Honerkamp1 — 1RWTH Aachen University, Aachen, Germany — 2Forschungszentrum Jülich, Jülich, Germany
Although the functional renormalization group (fRG) is by now a well-established method for investigating correlated electron systems, it is still undergoing significant technical and conceptual improvements. In particular, the motivation to optimally exploit the parallelism of modern computing platforms has recently lead to the development of the "truncated unity" functional renormalization group (TU-fRG). Here, we review this fRG variant, and we provide its extension to multiband systems with spin-orbit coupling. Furthermore, we discuss some aspects of the implementation and outline opportunities and challenges ahead for predicting the ground state ordering and emergent energy scales for a wide class of quantum materials.