Article ID Journal Published Year Pages File Type
1859170 Physics Letters A 2014 5 Pages PDF
Abstract

•Wronskian representation of TDPT and Bessel potentials.•Simple proof of Gaillard–Matveev theorem.•Regular and singular extensions of the constant potential.•Darboux transformations based on excited states.•Confluent case and Wronskian Rayleigh formula.

We propose a simple alternative proof of the Wronskian representation formula obtained by Gaillard and Matveev for the trigonometric Darboux–Pöschl–Teller (TDPT) potentials. It rests on the use of singular Darboux–Bäcklund transformations applied to the free particle system combined to the shape invariance properties of the TDPT.

Related Topics
Physical Sciences and Engineering Physics and Astronomy Physics and Astronomy (General)
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