Magnitude of static and dynamic polarizabilities of doubly excited states of negative ions: Application to the second bound state ofH

Abstract
A many-electron, many-photon theory has been applied to the computation of static α and dynamic α(ω) linear polarizability of the H 2p2 3P state. The calculation involves the nonperturbative mixing of one bound (2p2 3P), and one autoionizing (2s2p 3P° ) state with 13 continua. State-specific, compact, and accurate square-integrable wave functions have been employed. The magnitude of the polarizability is huge: α=64 000 a.u.