Abstract
It is shown that the resonance reported by Szmytkowski and Szmytkowski [Phys. Lett. A 235 (1997) 217] is not a proximity resonance as defined by Heller [Phys. Rev. Lett. 77 (1996) 4122]. Rather, it can be related to a threshold resonance connected to the antisymmetric bound state of the two wells, which enters the continuum when the wells are one scattering length apart. In addition, a surprising disappearance of the low energy s-wave cross section of two nearby wells is discussed.
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