The ground state correlation energy of the random phase approximation from a ring coupled cluster doubles approach.
نویسندگان
چکیده
We present an analytic proof demonstrating the equivalence between the random phase approximation (RPA) to the ground state correlation energy and a ring-diagram simplification of the coupled cluster doubles (CCD) equations. In the CCD framework, the RPA equations can be solved in O(N(4)) computational effort, where N is proportional to the number of basis functions.
منابع مشابه
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عنوان ژورنال:
- The Journal of chemical physics
دوره 129 23 شماره
صفحات -
تاریخ انتشار 2008