A short proof of the Gaillard-Matveev theorem based on shape invariance
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Yves GrandatiWe propose a simple alternative proof of the Wronskian representation formula obtained by Gaillard and Matveev for the Darboux-P\"oschl-Teller (DPT) potentials. It rests on the use of singular Darboux-B\"acklund transformations applied to the free particle system combined to the shape invariance properties of the DPT.View original: http://arxiv.org/abs/1211.2392
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