Approximate Treatment of Hermitian Effective Interactions and a Bound on the Error
R. Okamoto, K. Suzuki, P. J. Ellis, Jifa Hao, Zibang Li, T. T. S. Kuo
Abstract
The Hermitian effective interaction can be well-approximated by (R+Rdagger)/2 if the eigenvalues of omegadagger omega are small or state-independent(degenerate), where R is the standard non-Hermitian effective interaction and omega maps the model-space states onto the excluded space. An error bound on this approximation is given.
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