Iterative quantum computations of HO2 bound states and resonances for J = 4 and 5
Abstract
Bound and resonance states of HO2 have been calculated by both the complex Lanczos homogeneous filter diagonalisation (LHFD) method and the real Chebyshev filter diagonalisation method for non-zero total angular momentum J
= 4 and 5. For bound states, the agreement between the two methods is quite satisfactory; for resonances while the energies are in good agreement, the widths are only in general agreement. The relative performances of the two iterative