Jason Holt, and Oleg Safronov
On the number of eigenvalues of the Dirac operator in a bounded interval
(420K, pdf)

ABSTRACT.  Let $H_0$ be the free Dirac operator and $V\geq 0$ be a positive potential. 
We study the discrete spectrum of $H()=H_0- V$ in the interval $(-1,1)$ for large values of the coupling constant $>0$. 
In particular, we obtain an asymptotic formula for the number of eigenvalues of $H()$ situated 
in a bounded interval $[\l,\mu)$ as $	o\infty$.