One-dimensional quantum scattering by a parabolic odd potential
  Quantum scattering by a one-dimensional odd potential proportional to the square of the distance to the origin is considered. The Schr\"odinger equation is solved exactly and explicit algebraic expressions of the wavefunction are given. A complete discussion of the scattering function reveals the existence of Gamow (decaying) states and of resonances. 
Erasmo M. Ferreira, Javier Sesma
quant-ph