Abstract
We study the resonances produced in a one dimensional quantum system with an infinite potential on the negative real line plus two Dirac delta barriers centered at the points a,b>0. The system mass is not constant but undergoes jumps at the singular points a and b of the potential. We study the behavior of the resonances under the change of parameters such that the weight of the deltas or the heights of mass jumps. Possible degeneration of these resonances is also considered.
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