Zeroes of the spectral density of the periodic Schroedinger operator with Wigner-von Neumann potential

Sergey Naboko, Sergey Simonov

We consider the Schroedinger operator L_α on the half-line with a periodic background potential and the Wigner-von Neumann potential of Coulomb type: csin(2ωx+d)/(x+1). It is known…