On the eigenvalues of the Dirac operator
\textit{A. Kiselev, Y. Last} and \textit{B. Simon} [Commun. Math. Phys. 194, No. 1, 1-45 (1998; Zbl 0912.34074)] have proved that a one-dimensional Schrödinger operator with potential of Coulomb type decay can have only countably many positive eigenvalues, with zero being the only possible accumulation point. The paper under review presents the analogous result for Dirac operators.
scientific article; zbMATH DE number 1531320