Nanomaterial theory describes strongly correlated electrons in quantum dots

A schematic illustration of a nanoscale circuit. A quantum dot (the yellow part) is connected to two lead electrodes (the blue parts). Electrons tunneling into the quantum dot from the electrodes interact with each other to form a highly correlated quantum state, called “Fermi liquid”. Both nonlinear electric current passing through the quantum dot and its fluctuations that appear as a noise carry important signals, which can unveil underlying physics of the quantum liquid. It is clarified that three-body correlations of the electrons evolve significantly and play essential roles in the quantum state under the external fields that break the particlehole or time-reversal symmetry. Credit: Rui Sakano