Speaker
Description
In the context of strongly correlated electron systems, Dynamical Mean-Field theory has provided a powerful solution framework capable of addressing all the relevant energy scales of the system and describing features, such as the Mott transition, that escape standard Mean-Field treatment. It is however by construction completely local, hence not entirely adequate to address inherently momentum-dependent phenomena such as interacting topological phases. Here I will discuss two different and somewhat complementary real-space cluster extensions of DMFT, Cluster-DMFT and Variational Cluster Approximation, in their Exact Diagonalization implementation. I will then provide examples of the additional information they provide for topological features both in the Fermi liquid and Mott insulator phases.
| Abstract category | Numerical Methods |
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