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City University of New York (CUNY)

Quantum Physics

2018

N-representability

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N-Representability In The Quantum Kernel Energy Method, Walter Polkosnik May 2018

N-Representability In The Quantum Kernel Energy Method, Walter Polkosnik

Dissertations, Theses, and Capstone Projects

The Kernel Energy Method (KEM) delivers accurate full molecule energies using less computational resources than standard ab-initio quantum chemical approaches. KEM achieves this efficiency by decomposing a system of atoms into disjoint subsets called kernels. The results of full ab-initio calculations on each individual single kernel and on each double kernel formed by the union of each pair of single kernels are combined in an equation of a form that is specific to KEM to provide an approximation to the full molecule energy. KEM has been demonstrated to give accurate molecular energies over a wide range of systems, chemical methods …