请问一下有谁知道 RCCSD(T)-cf 具体是什么理论方法吗？看文献时 “the full configuration interaction (FCI) energies were estimated via an empirical continued
fraction approximant for couple cluster theory [RCCSD(T)-cf].” 文章对应的参考文献是[D.Z. Goodson, J. Chem. Phys. 116 (2002) 6948.]
cf=continued fraction ？投稿审稿人也要求回答“what is RCCSD(T)-cf？”挺着急的希望有了解的指点一下，非常感谢？
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