Properties of resonance states inH−

Abstract

Using hyperspherical coordinates and a Born-Oppenheimer-type expansion, the potential curves of ${\mathrm{H}}^{-}$ that converge to the $n=1\mathrm{}$ and $n=2\mathrm{}$ thresholds of hydrogen are obtained. From the computed potential curves, the properties of bound states, Feshbach resonances, and shape resonances are conveniently studied.