One parameter family of rationally extended isospectral potentials
英文摘要：
We start from a given one dimensional rationally extended potential associated with $X_m$ exceptional orthogonal polynomials and using the idea of supersymmetry in quantum mechanics, we obtain one continuous parameter ($λ$) family of rationally extended strictly isospectral potentials whose solutions are also associated with Xm exceptional orthogonal polynomials. We illustrate this construction by considering three well known rationally extended potentials, two with pure discrete spectrum (the extended radial oscillator and the extended Scarf-I) and one with both the discrete and the continuous spectrum (the extended generalized Poschl-Teller) and explicitly construct the corresponding one continuous parameter family of rationally extended strictly isospectral potentials. Further, in the special case of $λ= 0$ and $-1$, we obtain two new exactly solvable rationally extended potentials, namely the rationally extended Pursey and the rationally extended Abhrahm-Moses potentials respectively. We illustrate the whole procedure by discussing in detail the particular case of the $X_1$ rationally extended one parameter family of potentials including the corresponding Pursey and the Abraham Moses potentials.
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