On the discrete spectrum of Dirac operators with Lorentz-scalar $\delta$-shell interactions supported on unbounded curves

Markus Holzmann, Vladimir Lotoreichik, Marco Vogel

We consider the massive Dirac operator (with positive mass) in the plane with an attractive Lorentz-scalar $\delta$-shell interaction of strength $\tau \in (-\infty ,0)\setminus \{-2\}$ suppor…