Dynamical mean-field theory (DMFT) is a theoretical framework used to study strongly correlated electron systems by simplifying the many-body problem into an effective single-body problem with time-dependent interactions. This approach allows for the analysis of phenomena such as metal-insulator transitions and magnetic ordering by taking into account local quantum fluctuations and the effects of lattice structure on electronic behavior. DMFT is particularly useful for understanding complex materials like Mott insulators, where electron correlations play a crucial role.
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