87 citations · 927 across the 51 of their papers we have counts for
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Group theoretical approach to the intertwined Hamiltonians
José F. Cariñena, David J. Fernández C., Arturo Ramos
We show that the finite difference Bäcklund formula for the Schrödinger Hamiltonians is a particular element of the transformation group on the set of Riccati equations considered…
Nonlocal supersymmetric deformations of periodic potentials
David J. Fernandez C., Bogdan Mielnik, Oscar Rosas-Ortiz +1
Irreducible second-order Darboux transformations are applied to the periodic Schrodinger's operators. It is shown that for the pairs of factorization energies inside of the same fo…
Supersymmetrically transformed periodic potentials
David J. Fernandez C
The higher order supersymmetric partners of a stationary periodic potential are studied. The transformation functions associated to the band edges do not change the spectral struct…