Speaker
Ivan Terekhov
(ITMO University)
Description
The interaction model of two electrons in the edge states of a two-dimensional topological insulator is investigated. Both solutions of the Schr\"odinger equation and solutions of the Bethe-Salpeter equation at different values of the Fermi energy are considered. It is shown that for the Bethe-Salpeter equation, which takes into account the existence of the Fermi surface, there is a discrete spectrum in the system of two electrons. This phenomenon does not appear in the case of the Schr\"odinger equation.
Authors
Prof.
Alexandr Milstein
(Budker Institute of Nuclear Physics of SB RAS)
Ivan Terekhov
(ITMO University)
