Wave Functions of Pentadiagonal Matrices in the Weak Coupling Limit
arXiv:2009.04463 · doi:10.1142/S0218301320500500
Abstract
We consider a pentadiagonal matrix which will be described in the text. We demonstrate practical methods for obtaining weak coupling expressions for the lowest eigenvector in terms of the parameters in the matrix, v and w. It is found that the expressions simplify if the wave function coefficients are put in the denominator.